TRANSMISSION – GMC Cab & Chassis Sierra 3500 2006 – SYSTEM WIRING DIAGRAMS

TRANSMISSION

Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra 3500 2006

List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra 3500 2006:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except seo
• Front axle actuator
• Front propshaft speed sensor
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• Seo
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 3500 2006

List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 3500 2006:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except seo
• Front axle actuator
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 3500 2006

List of elements for Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 3500 2006:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) gasoline: powertrain control module diesel: engine control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Diesel (ecm)
• Encoder
• Encoder low
• Encoder sig
• Except seo
• Front axle actuator
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gas (pcm)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• Seo
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Transfer case encoder motor
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Transmission system
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

6.0L VIN U

6.0L VIN U, A/T Wiring Diagram for GMC Cab & Chassis Sierra 3500 2006

List of elements for 6.0L VIN U, A/T Wiring Diagram for GMC Cab & Chassis Sierra 3500 2006:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• (sierra & silverado)
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual manual valve position switch
• At iss hi
• At iss lo
• Automatic transmission (4l80-e)
• Automatic transmission input shaft speed sensor (in transmission)
• B10
• B11
• B12
• Body control module (below steering column)
• Brake fuse 10a
• Brk sw
• C12
• Cls 2 data
• Cruise control system
• Data link connector (below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front of left cylinder head)
• Except seo
• Fluid temp sensor
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S117
• S125
• Sens gnd
• Seo
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tcc pwm
• Tcc pwm solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Underhood fuse block (left side of engine c2 compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

6.6L VIN 2

6.6L VIN 2, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 6.6L VIN 2, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (left front of engine compt) transmission control module
• (right rear of engine block) g102
• (right rear of engine block) g103
• 4wd circuit (transfer case controls)
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• A/t shift lever
• Allison transmission
• Brake fuse 10a
• Brake sig
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• D5 c1
• Data bus h
• Data bus l
• Dr shift req sig
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main
• Main press solenoid
• Malfunc ind lamp
• Nca
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• S103
• Serial data
• Shift solenoids
• Solenoids
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

6.6L VIN 2, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 6.6L VIN 2, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (in engine harness) s164
• (left front of engine compt) powertrain control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• Allison transmission
• B11
• B12
• B5 c1
• Body control module (lower left side of dash)
• C12 c1
• C12 c2
• Can data h
• Can data l
• Class 2 serial data
• Computer data lines system
• Data link connector (under left side of dash)
• E4 c1
• Engine controls system
• Except seo
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Input speed sensor (in transmission)
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Pressure switch manifold
• Pto status
• Red
• Seo
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tan
• Tft sensor
• Tow/haul switch
• Trans mil request
• Turbine speed sensor (in transmission)
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)

6.6L VIN D

6.6L VIN D, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 6.6L VIN D, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (left front of engine compt) transmission control module
• (right rear of engine block) g102
• (right rear of engine block) g103
• 4wd circuit (transfer case controls)
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• A/t shift lever
• Allison transmission
• Brake fuse 10a
• Brake sig
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• D5 c1
• Data bus h
• Data bus l
• Dr shift req sig
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main
• Main press solenoid
• Malfunc ind lamp
• Nca
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• S103
• Serial data
• Shift solenoids
• Solenoids
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

6.6L VIN D, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 6.6L VIN D, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (in engine harness) s164
• (left front of engine compt) powertrain control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• Allison transmission
• B11
• B12
• B5 c1
• Body control module (lower left side of dash)
• C12 c1
• C12 c2
• Can data h
• Can data l
• Class 2 serial data
• Computer data lines system
• Data link connector (under left side of dash)
• E4 c1
• Engine controls system
• Except seo
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Input speed sensor (in transmission)
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Pressure switch manifold
• Pto status
• Red
• Seo
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tan
• Tft sensor
• Tow/haul switch
• Trans mil request
• Turbine speed sensor (in transmission)
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)

8.1L VIN G

8.1L VIN G, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 8.1L VIN G, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (left front of engine compt) transmission control module
• (right rear of engine block) g103
• 4wd circuit (transfer case controls)
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• A/t shift lever
• Allison transmission
• Brake fuse 10a
• Brake sig
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• D5 c1
• Data bus h
• Data bus l
• Dr shift req sig
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main
• Main press solenoid
• Malfunc ind lamp
• Nca
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• Req torque
• S103
• Serial data
• Shift solenoids
• Solenoids
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Torque sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

8.1L VIN G, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006

List of elements for 8.1L VIN G, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 2006:

• (in engine harness)
• (left front of engine compt) powertrain control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• Allison transmission
• B11
• B12
• B5 c1
• Body control module (lower left side of dash)
• C12 c1
• C12 c2
• Class 2 serial data
• Data link connector (under left side of dash)
• Delivered torque sig
• E4 c1
• Engine controls system
• Except seo
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Input speed sensor (in transmission)
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Pressure switch manifold
• Pto status
• Red
• Requested torque sig
• S103
• S164
• Seo
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tft sensor
• Torque response sig
• Tow/haul switch
• Trans mil request
• Turbine speed sensor (in transmission)
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)