POWER DISTRIBUTION

4.3L VIN X

4.3L VIN X, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

4.3L VIN X, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

4.3L VIN X, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

4.3L VIN X, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

4.3L VIN X, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

4.3L VIN X, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

4.8L VIN C

4.8L VIN C, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

4.8L VIN C, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

4.8L VIN C, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

4.8L VIN C, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

4.8L VIN C, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

4.8L VIN C, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 4.8L VIN C, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

5.3L VIN 0

5.3L VIN 0, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

5.3L VIN 0, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

5.3L VIN 0, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

5.3L VIN 0, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

5.3L VIN 0, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

5.3L VIN 0, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 0, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

5.3L VIN 3

5.3L VIN 3, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

5.3L VIN 3, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

5.3L VIN 3, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

5.3L VIN 3, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

5.3L VIN 3, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

5.3L VIN 3, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN 3, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

5.3L VIN J

5.3L VIN J, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

5.3L VIN J, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

5.3L VIN J, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

5.3L VIN J, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

5.3L VIN J, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

5.3L VIN J, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN J, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

5.3L VIN M

5.3L VIN M, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

5.3L VIN M, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

5.3L VIN M, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

5.3L VIN M, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

5.3L VIN M, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

5.3L VIN M, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 5.3L VIN M, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

6.0L VIN Y

6.0L VIN Y, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

6.0L VIN Y, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

6.0L VIN Y, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

6.0L VIN Y, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

6.0L VIN Y, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

6.0L VIN Y, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.0L VIN Y, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)

6.2L VIN 8

6.2L VIN 8, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(info not available)
(not used)
(on lower left front of engine) (except 4.3l) g102
175a
4 speed a/t
6 speed a/t
6.0l (vin k)
6a6
Auto 4x4
Automatic a/c
Auxiliary battery relay (if equipped) (rear of x1 engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
From left i/p j/b (diagram 4 of 6)
From underhood fuse block (diagram 6 of 6)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
Fuse holder (right side of firewall)
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2
Ltr fuse 53 20a
Manual a/c
Mega fuse (right rear of engine compt)
Mega fuse 125a
Mega fuse 175a
Mega fuse 60a
Nca
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of dash)
Seo b2 fuse 37 30a
Side of dash)
Starter
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To roof beacon switch (diagram 2 of 6)
To stud 1 fuse 68 (diagram 2 of 6)
To underhood fuse block (diagram 2 of 6)
To underhood fuse block (diagram 3 of 6)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
W/ auxiliary battery
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Windshield washer solvent heater (if equipped)
Wrecker relay
Wsw/htr fuse 66 60a
X14

6.2L VIN 8, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra 3500 HD 2008:

(in camper harness) j414
(in sliding rear window jumper harness) j336
(not used)
(w/ individual front seat) j315
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 30a
Ctsy fuse 15a
Ddm fuse 15a
Dim fuse 15a
Driver door lock/ window switch
Driver power seat adjuster
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l, 5.3l (vin o), 6.0l & 5.3l (vin 3)
From fusible link 3 (diagram 1 of 6)
From ipc f fuse 46 (diagram 1 of 6)
From pdm fuse (diagram 3 of 6)
From right i/p j/b (diagram 1 of 6)
Front seat
Fscm fuse 21 20a
Fuel system control module (fscm)
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
Hydraulic power brake control
I/p fuse block (left side of dash)
J323
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger power seat adjuster
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of x3 dash)
Right i/p j/b (in right end of x6 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 6)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control
W/ comfort & decor level 3 convenience package
W/ electrical alarm bulb & camper trailer provision
W/ electrical alarm bulb & w/o camper trailer provision
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ power window
W/ restraint system
W/ roof beacon relay
W/ sunroof
W/ truck trailer hd wiring harness
W/ wrecker & emergency vehicle roof lamp relay
W/o comfort & decor level 3 convenience package
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12

6.2L VIN 8, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra 3500 HD 2008:

(in pto jumper harness) (w/ power take off) j127
(lower left side of dash) left i/p j/b
(not used)
2a1
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium audio branded w/ amplifier speaker system)
Automatic a/c
Aux pwr 2 fuse 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center console compartment accessory power outlet
Center seat accessory power outlet
Chime module
Comfort & decor level 3 convenience package
Crew cab w/ individual front seat
Digital radio receiver (if equipped)
Enhanced audio
Esc/alc exh fuse 2 30a
Exp/pto fuse 47 15a
From auxiliary battery run relay (diagram 1 of 6)
From fscm fuse 21 (diagram 2 of 6)
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
I/p fuse block (left side of dash)
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint vehicle rollover sensor
Info fuse 10a
Is lps fuse 10a
J200
J203
J304
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 15a
Luxury edition
Manual a/c
Merchandised package
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
Performance
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium audio branded
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Rear seat ent fuse 5a
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Stop lamps fuse 15a
To body control module (diagram 4 of 6)
To dlis fuse 35 (diagram 4 of 6)
To left i/p block (diagram 2 of 6)
To lt dr circuit breaker (diagram 2 of 6)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ amplifier speaker system
W/ az3
W/ custom console front compt floor
W/ head curtain air bag
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & roof beacon relay
W/o luxury
W/o radio
Windshield washer solvent heater (if equipped)
X11

6.2L VIN 8, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra 3500 HD 2008:

(if equipped) windshield outside moisture sensor
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(in the steering column harness) j216
(not used)
12v
2a1
2a4
4 speed a/t
4.3l
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 35 2a
Driver window switch
Electronic 4x4 & auto 4x4
Engine control module (ecm)
Except 4.3l
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Except electronic 4x4 & auto 4x4
From lbec 1 fuse 64 (diagram 3 of 6)
From underhood fuse block (diagram 3 of 6)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J104 (in engine harness, 5 cm from engine control module connector breakout)
J212 (in steering column harness)
J231
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To mobile radio fuse block (diagram 1 of 6)
To run/crnk relay (diagram 5 of 6)
To underhood fuse block (diagram 5 of 6)
Transfer case shift control module
Transfer case shift control switch
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 10 series, auto 4x4 & electronic 4x4
W/ 4 speed, accessory steering wheel & automatic electronic cruise control
W/ 6 speed
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/0 10 series, auto 4x4 & electronic 4x4
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201

6.2L VIN 8, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra 3500 HD 2008:

(in fuse block jumper harness) j220
(not used)
4-speed a/t
4wd & 2 speed manual shift control transfer case
6-speed a/t
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Drl pcb relay
Ecm-ign fuse 56 15a
Engine control module (ecm)
Except 4wd & 2 speed manual shift control transfer case
Fog lamp relay
From body control module (diagram 4 of 6)
From dlis fuse 35 (diagram 4 of 6)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel system control module (fscm)
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering fuse
Heated steering wheel control module
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module disable switch (if equipped)
Inflatable restraint passenger air bag on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
Instrument panel cluster (ipc)
J105
J130 (in engine harness)
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left x9
Misc ing fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump relay (6.0l (vin k) w/o auxiliary fuel tank)
Seo/alc fuse 54 10a
Side of dash)
Stop lamp switch
Strtr relay
To fan 1 fuse 57 (diagram 6 of 6)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ auto 4x4 & electronic 4x4
W/ steering wheel heater
W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X1 left i/p j/b (lower left x9
X11
X12
X14
X175

6.2L VIN 8, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008

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List of elements for 6.2L VIN 8, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra 3500 HD 2008:

(in ignition coil jumper harness, between ignition coils 4 & 2) j110
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(not used)
4.3l
Auxiliary battery
Central sequential fuel injection (central sfi)
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From frt wpr p fuse 36 (diagram 5 of 6)
Fuel injector
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Ignition coil/ module
Ignition control module (icm)
Inj-a fuse 24 20a
Inj-b fuse 13 (except 4.3l) 20a
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness) j128
Power take off (pto) module (if equipped)
Pwr/ trn relay
Security indicator lamp
Seo b1 fuse 52 15a
Spo alarm
To auxiliary battery run relay (diagram 1 of 6)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
Vehicle inclination sensor
Vehicle shock sensor
W/ comfort & decor level 3 convenience package & luxury
X14
X2 left i/p j/b (lower left side of dash)