ENGINE PERFORMANCE – GMC Cab & Chassis Sierra 3500 2007 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

6.0L VIN U

6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

6.0L VIN U, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

6.0L VIN U, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

6.0L VIN U, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

6.0L VIN U, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

6.6L VIN 2

6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (on left rear side of engine block) engine oil pressure (eop) sensor
• (right side of engine) exhaust gas recirculation (egr) valve
• 4wd low sig
• 5v ref
• App sensor 2 sig
• B tan
• Camshaft position sensor (front of engine, near cooling fan pulley)
• Cmp sensor sig
• Coolant level sig
• Coolant level switch (in coolant reservoir)
• Cpp sw sig
• Crank volt
• Cruise control system
• Cruise on sw sig
• Cruise resume sw sig
• Cruise set sw sig
• Ect sensor sig
• Egr val pos sig
• Eng shutoff sig
• Engine control module (left front of engine compt)
• Engine coolant temperature sensor (top of engine, near oil filter tube)
• Engine oil level switch (left rear of oil pan)
• Fuel press
• Fuel press volt
• G103 (on right rear of engine block)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• G108 (lower left side of engine)
• Iat sensor 2 sig
• Iat sensor sig
• Inj + group 1
• Inj + group 2
• Inj + group 3
• Inj + group 4
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• Low ref
• Maf sensor sig
• Nca
• Oil level sw sig
• Oil press sig
• Pnk
• Pto on sw sig
• Pto sig
• S102
• S170
• Starter enable
• Starting/ charging system
• Starting/charging system
• Tan
• Transmission system
• Tur vane pos
• Tur vane pos sig
• Turbocharger sig
• Turbocharger vane position control solenoid valve
• Water in fuel sensor (on fuel filter element)

6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (or 2500)
• (or 2501)
• 125a
• A/t
• Accelerator pedal position sensor
• Bus +
• Bus -
• Computer data lines system
• G108 (lower left side of eng)
• Glow plug 1 +
• Glow plug 2 +
• Glow plug 3 +
• Glow plug 4 +
• Glow plug 5 +
• Glow plug 6 +
• Glow plug 7 +
• Glow plug 8 +
• Glow plug control module (gpm)
• Glow plug fuse
• Glow plugs
• Grd
• Hb03
• Hb11
• Hb12
• Hb13
• Hb14
• Hb15
• Hb16
• Hb17
• Hb18
• Hot at all times
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah sig
• Iah temp sig
• Iah volt sig
• Ic180
• Ic181
• Ic182
• Ic183
• Ic184
• Ic185
• Ign 0 +
• Ign 1 +
• Intake air heater (iah) module
• M/t
• Nca
• Pnk
• Power distribution system
• Red
• Tan

6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• 175a
• Axle sw sig
• Backup volt
• Body relay block
• Brk fuse 10a
• C12
• Ckp sensor sig
• Clutch pedal position switch
• E11
• Ecm 1 fuse 15a
• Engine control module (left front of engine compt)
• Exterior lights system
• Frp sensor sig
• Fuel pressure regulator
• G108 (lower left side of engine)
• Hot at all times
• Hot in acc, run & start
• Hot in run
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a c1
• Ign 1 +
• Inj 1
• Inj 2
• Intake air heater fuse
• Intake air temperature (iat) sensor 2 (in air induction tube)
• Low ref
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Nca
• Pnk
• Red
• Stoplamp switch (top of brake pedal bracket)
• Tan
• Transmission system
• Tur van pos
• Under- hood fuse block (left side eng compt) c1
• Water in fuel

6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (in engine harness)
• Actuator fuse 15a
• Closed below 8 deg c (46 deg f)
• Ecm b fuse 20a
• Ecm fuse 25a
• Ecm relay
• F/ pmp relay
• Fuel heater (top of fuel filter element)
• Fuel htr fuse 15a
• Fuel injectors
• Fuel rail pressure sensor (under intake manifold shield, on fuel rail)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• S102
• S144
• S166 (in forward lamp harness)
• S167
• S181
• S182
• Tan
• Under- hood fuse block (left side of engine block)

6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Crankshaft position sensor (right side of engine)
• Cruise control system
• Cruise fuse 10a
• Fog lp fuse 15a
• Fuel pump (left side frame rail)
• G103 (on right rear of engine block)
• G110 (left front body mount)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure (map) sensor (mounted to intake air tube, in front of intake air heater)
• Nca
• Off
• Pnk
• Power take off relay (near underhood fuse block)
• Power take off switch
• S177
• S205
• S224
• Set
• Tan
• Turbocharger vane position sensor
• Underhood fuse block (left side of engine block)

6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• 5-speed a/t
• 5v ref
• 6-speed m/t
• 8s8
• A/c compress
• A/c refrig sig
• A/c system
• Allison transmission
• Anti-lock brakes system
• App sensor 1 sig
• B11
• Charge ind
• Chmsl +
• Class 2 serial
• Computer data lines system
• Data bus +
• Data bus -
• Ecm relay
• Egr motor high
• Egr motor low
• Eng speed sig
• Engine control module (left front of engine compt)
• Exc 8s8
• Exterior lights system
• Fuel level sensor sig
• Fuel level sig
• Fuel pump
• Fuel rail temperature (frt) sensor (2-speed manual shift: left side of transfer case, 2-speed electric shift: left rear of transfer case)
• Fuel temp sig
• G102 (on right side of engine block)
• Generator 2 sig
• Generator sig
• Grd
• Hot at all times
• Ign 0 +
• Ign 1 +
• Instrument cluster system
• Instrument panel cluster
• Internal mode switch
• Ipc/dic fuse 10a
• Low ref
• Malfunction indicator lamp
• Mil control
• Park/neutral sig
• Pnk
• Pto control
• Rpm out
• S103
• Seo b1 fuse 15a
• Starting/ charging system
• Tan
• Tcc brake sig
• Transmission control module (left front of engine compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (left rear side of trans)
• Vehicle speed sig
• Vss low sig
• Vss sig
• Wait to start
• Wait to start ind

6.6L VIN D

6.6L VIN D, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (on left rear side of engine block) engine oil pressure (eop) sensor
• (right side of engine) exhaust gas recirculation (egr) valve
• 4wd low sig
• 5v ref
• App sensor 2 sig
• B tan
• Camshaft position sensor (front of engine, near cooling fan pulley)
• Cmp sensor sig
• Coolant level sig
• Coolant level switch (in coolant reservoir)
• Cpp sw sig
• Crank volt
• Cruise control system
• Cruise on sw sig
• Cruise resume sw sig
• Cruise set sw sig
• Ect sensor sig
• Egr val pos sig
• Eng shutoff sig
• Engine control module (left front of engine compt)
• Engine coolant temperature sensor (top of engine, near oil filter tube)
• Engine oil level switch (left rear of oil pan)
• Fuel press
• Fuel press volt
• G103 (on right rear of engine block)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• G108 (lower left side of engine)
• Iat sensor 2 sig
• Iat sensor sig
• Inj + group 1
• Inj + group 2
• Inj + group 3
• Inj + group 4
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• Low ref
• Maf sensor sig
• Nca
• Oil level sw sig
• Oil press sig
• Pnk
• Pto on sw sig
• Pto sig
• S102
• S170
• Starter enable
• Starting/ charging system
• Starting/charging system
• Tan
• Transmission system
• Tur vane pos
• Tur vane pos sig
• Turbocharger sig
• Turbocharger vane position control solenoid valve
• Water in fuel sensor (on fuel filter element)

6.6L VIN D, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (or 2500)
• (or 2501)
• 125a
• A/t
• Accelerator pedal position sensor
• Bus +
• Bus -
• Computer data lines system
• G108 (lower left side of eng)
• Glow plug 1 +
• Glow plug 2 +
• Glow plug 3 +
• Glow plug 4 +
• Glow plug 5 +
• Glow plug 6 +
• Glow plug 7 +
• Glow plug 8 +
• Glow plug control module (gpm)
• Glow plug fuse
• Glow plugs
• Grd
• Hb03
• Hb11
• Hb12
• Hb13
• Hb14
• Hb15
• Hb16
• Hb17
• Hb18
• Hot at all times
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah sig
• Iah temp sig
• Iah volt sig
• Ic180
• Ic181
• Ic182
• Ic183
• Ic184
• Ic185
• Ign 0 +
• Ign 1 +
• Intake air heater (iah) module
• M/t
• Nca
• Pnk
• Power distribution system
• Red
• Tan

6.6L VIN D, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• 175a
• Axle sw sig
• Backup volt
• Body relay block
• Brk fuse 10a
• C12
• Ckp sensor sig
• Clutch pedal position switch
• E11
• Ecm 1 fuse 15a
• Engine control module (left front of engine compt)
• Exterior lights system
• Frp sensor sig
• Fuel pressure regulator
• G108 (lower left side of engine)
• Hot at all times
• Hot in acc, run & start
• Hot in run
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a c1
• Ign 1 +
• Inj 1
• Inj 2
• Intake air heater fuse
• Intake air temperature (iat) sensor 2 (in air induction tube)
• Low ref
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Nca
• Pnk
• Red
• Stoplamp switch (top of brake pedal bracket)
• Tan
• Transmission system
• Tur van pos
• Under- hood fuse block (left side eng compt) c1
• Water in fuel

6.6L VIN D, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (in engine harness)
• Actuator fuse 15a
• Closed below 8 deg c (46 deg f)
• Ecm b fuse 20a
• Ecm fuse 25a
• Ecm relay
• F/ pmp relay
• Fuel heater (top of fuel filter element)
• Fuel htr fuse 15a
• Fuel injectors
• Fuel rail pressure sensor (under intake manifold shield, on fuel rail)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• S102
• S144
• S166 (in forward lamp harness)
• S167
• S181
• S182
• Tan
• Under- hood fuse block (left side of engine block)

6.6L VIN D, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Crankshaft position sensor (right side of engine)
• Cruise control system
• Cruise fuse 10a
• Fog lp fuse 15a
• Fuel pump (left side frame rail)
• G103 (on right rear of engine block)
• G110 (left front body mount)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure (map) sensor (mounted to intake air tube, in front of intake air heater)
• Nca
• Off
• Pnk
• Power take off relay (near underhood fuse block)
• Power take off switch
• S177
• S205
• S224
• Set
• Tan
• Turbocharger vane position sensor
• Underhood fuse block (left side of engine block)

6.6L VIN D, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 3500 2007:

• 5-speed a/t
• 5v ref
• 6-speed m/t
• 8s8
• A/c compress
• A/c refrig sig
• A/c system
• Allison transmission
• Anti-lock brakes system
• App sensor 1 sig
• B11
• Charge ind
• Chmsl +
• Class 2 serial
• Computer data lines system
• Data bus +
• Data bus -
• Ecm relay
• Egr motor high
• Egr motor low
• Eng speed sig
• Engine control module (left front of engine compt)
• Exc 8s8
• Exterior lights system
• Fuel level sensor sig
• Fuel level sig
• Fuel pump
• Fuel rail temperature (frt) sensor (2-speed manual shift: left side of transfer case, 2-speed electric shift: left rear of transfer case)
• Fuel temp sig
• G102 (on right side of engine block)
• Generator 2 sig
• Generator sig
• Grd
• Hot at all times
• Ign 0 +
• Ign 1 +
• Instrument cluster system
• Instrument panel cluster
• Internal mode switch
• Ipc/dic fuse 10a
• Low ref
• Malfunction indicator lamp
• Mil control
• Park/neutral sig
• Pnk
• Pto control
• Rpm out
• S103
• Seo b1 fuse 15a
• Starting/ charging system
• Tan
• Tcc brake sig
• Transmission control module (left front of engine compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (left rear side of trans)
• Vehicle speed sig
• Vss low sig
• Vss sig
• Wait to start
• Wait to start ind

8.1L VIN G

8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (below steering column) data link connector
• (in injector jumper harness)
• (m/t)
• +5v
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C2 c9
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• Crankshaft position (ckp) sensor (behind left valve cover)
• D10
• E11
• Ect sig
• G103 (right rear of engine block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Lev sw sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• P/n sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (pcm) (left front of engine compt)
• Pto enable sw
• Pto eng kill
• Pto engage
• Pto status
• Ref low
• Req torq sig
• Rly ctrl
• S103
• S110
• S152
• S154
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Underhood fuse block (left side of eng compt)

8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine block) g104
• (right rear of engine block)
• Allison transmission
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (middle of right cylinder head)
• Engine oil level switch (right side of oil pan)
• F/ pump relay
• Fuel pump & sender assembly (primary) (in primary fuel tank)
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Internal mode switch
• Knock sensor bank 1 (left side of engine)
• Knock sensor bank 2 (on right side of engine, forward of starter)
• Nca
• Pcm b fuse 20a
• Pnk
• Pnk d
• S102
• S103
• Sba fuse 15a
• Tan
• Tan a
• Transmissions system
• Underhood fuse block (left side of eng compt)

8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (left side of timing cover)
• Cruise control system
• Cruise fuse 10a
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (left side of throttle body, near left of engine)
• Evaporative emissions canister vent solenoid (right front side of primary fuel tank)
• F12
• Fog lp fuse 15a
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure sensor (top rear of engine, on intake manifold)
• Off
• Pnk
• Pnk a
• Power take off relay (near underhood fuse block)
• Power take off switch
• Red
• S164 (in i/p harness)
• S205
• S224
• S312
• Set
• Stop lp fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Transmissions system
• Under- hood fuse block (left side of eng compt)
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (left rear of transmission/ transfer case)

8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of engine compt)
• Veh stop fuse 15a

8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 3500 2007

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 3500 2007:

• (in engine harness)
• (in ignition coil jumper harness)
• (left side of engine block) g102
• 400 (or 821)
• 4wd circuit (transfer case control)
• 4wd low sig
• A/c system
• A/t
• A12
• Anti-lock brakes system
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Clutch sw
• Crank fuse 10a
• Crank volt
• Ctrl
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gen
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• M/t
• Maf sig
• Map sig
• Mil
• Mil ctrl
• Mil request
• Nca
• Nca nca
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (pcm) (left front of engine compt)
• Press sens sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• S165
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting system
• Starting/charging system
• Tan
• Torque sig
• Trans- mission control module (left front of eng compt)
• Transmissions system
• Under- hood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out