TRANSMISSION – GMC Cab & Chassis Sierra 3500 HD 2008 – SYSTEM WIRING DIAGRAMS

TRANSMISSION

Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 3500 HD 2008:

• (4.3l)
• (4.8l, 5.3l, 6.ol & 6.2l)
• (diesel)
• (gas) (diesel)
• (lower left side of dash) left i/p junction block
• (on lower left front of engine)
• (top left rear of engine) g107
• 4.3l
• 4.8l, 5.3l, 6.0l & 6.2l
• 4wd ind
• 4wd low sig
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle sw sig
• Computer data lines system
• Diesel
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Front axle actuator (on front axle assembly)
• G102 g103 (on front of right cylinder head)
• G201 (upper left corner of dash)
• Gmlan bus +
• Gmlan bus -
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• J105
• J130 (4 speed a/t)
• J220 (w/ steering pnk
• Logic
• Pnk
• Tan
• Trans ign 1 fuse 19 fuse 13 10a
• Transfer case shift control switch (on top left of transfer case)
• Underhood fuse block (left side of engine compt)
• Wheel heater)
• X2 n4 pnk
• X5 g4

Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 3500 HD 2008:

• (diesel)
• (gas)
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (lower left side of dash) left i/p junction block
• 2 hi ind ctrl
• 2-hi ind
• 2a4
• 4 hi ind ctrl
• 4 lo ind ctrl
• 4-hi ind
• 4-lo ind
• 4.3l
• 4wd ind
• 5 volt
• 6.0l (vin y), 4.3l, 4.8l & 5.3l
• 6.2l & 6.0l (vin k)
• 6.6l
• 8v sply
• Acc wakeup serial data
• Accy wakeup srl data
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle actr ctrl
• Axle sw sig
• Batt +
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Diesel
• Dirtn sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l & 6.6l
• Front axle actuator (0n front axle assembly)
• G102 (on lower left front of engine)
• G103 (on front of right cylinder head)
• G201 (upper left corner of dash)
• G4 pnk
• Gas
• Gmlan bus +
• Gmlan bus -
• Gmlan bus-
• Gnd
• Hot at all times
• Hot in acc or run
• Hot w/ run/crnk relay energized
• Ign
• Ign volt
• Incrmt encoder sig
• Instrument panel cluster (ipc)
• Interior lights system
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• J105
• J220 (w/ steering wheel heater)
• Left i/p junction block (lower left side of dash)
• Lo ref
• Logic
• Low ref
• Misc ign fuse 43 fuse 40 10a
• Mtr ctrl a
• Mtr ctrl b
• Neutral ind
• Outside moisture sensor (near inside rearview mirror mount)
• Pnk
• Power distribution system
• Pulse sig
• Right i/p junction block (in right end of dash)
• Shift motor
• Sw sig
• Tan
• Trans ig1 fuse 19 fuse 13 15a
• Transfer case encoder motor (on transfer case)
• Transfer case shift control module (lower left side of dash)
• Transfer case shift control switch (on top left of transfer case)
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Trec fuse 67 fuse 62 30a
• Underhood fuse block (left side of engine compt)
• W/ outside moisture sensor
• W/o outside moisture sensor
• X1 a3 pnk

6.0L VIN K

6.0L VIN K, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for 6.0L VIN K, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008:

• (lower left side of dash)
• (lower left side of dash) left i/p junction block
• (on front of right cylinder head) g103
• (upper left corner of dash) g201
• Accy volt
• Automatic transmission
• Aux hvac- ign fuse 45 10a
• Batt +
• Brake pedal sig
• Computer data lines system
• Control solenoid valve assembly
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Exterior lights system
• G4 x5
• Gmlan data bus (+)
• Gmlan data bus (-)
• Gnd
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign voltage
• Instrument cluster panel (ipc)
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• J106
• J220 (w/ steering wheel heater)
• Left i/p junction block
• Logic
• Low reference
• Mil ctrl
• Mil ind
• Misc ign fuse 43 10a
• Park/neutral sig
• Pc solenoid 1 control
• Pc solenoid 2 control
• Pc solenoid 3 control
• Pc solenoid 4 control
• Pc solenoid 5 control
• Pc solenoid high control
• Pnk
• Pnk a3 pnk
• Pnk a4 pnk
• Power distribution system
• Pressure control (pc) solenoid valve 1
• Pressure control (pc) solenoid valve 2
• Pressure control (pc) solenoid valve 3
• Pressure control (pc) solenoid valve 4
• Pressure control (pc) solenoid valve 5
• Replicated tos sig
• Replicated tos signal
• Run/crank volt
• Serial data bus (+)
• Serial data bus (-)
• Shift solenoid (ss) 1 control
• Shift solenoid (ss) 2 control
• Shift solenoid (ss) valve 1
• Shift solenoid (ss) valve 2
• Stop lamp switch (top of brake pedal assembly)
• Tan
• Tcm-batt fuse 14 10a
• To automatic transmission internal mode switch (ims) (diagram 2 of 2)
• Torque converter clutch (tcc) pressure control (pc) solenoid valve
• Torque converter clutch pressure control solenoid control
• Tow/ haul ind
• Trans ign1 fuse 19 15a
• Transmission control module (tcm)
• Transmission fluid temperature (tft) sensor
• Transmission fluid temperature (tft) sensor signal
• Underhood fuse block (left side of engine compt)

6.0L VIN K, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for 6.0L VIN K, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008:

• (diagram 1 of 2)
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (lower left side of dash) transfer case shift control module
• 12v
• A/t manual shift switch
• Acc volt
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Automatic transmission shift lever
• Body control module (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• From automatic transmission a
• Ftp switch 1 voltage
• Ftp switch 3 voltage
• Ftp switch 4 voltage
• Ftp switch 5 voltage
• G201 (upper left corner of dash)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Input speed sensor (iss)
• Input speed sensor (iss) signal
• J127
• J216
• J230
• Nca
• Output speed sensor (oss)
• Output speed sensor (oss) signal
• Pnk
• Red
• Start
• Tan
• Tap up/ tap down sw sig
• Tow/ haul sw sig
• Tow/ haul switch
• Transmission control module (tcm)
• Transmission range switch sig a
• Transmission range switch sig b
• Transmission range switch sig c
• Transmission range switch sig p
• W/ electronic & auto 4x4
• W/ electronic steering control
• W/o electronic & auto 4x4
• X1 pnk
• X3 tan

6.6L VIN 6

6.6L VIN 6, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for 6.6L VIN 6, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008:

• (in engine harness, 5 cm from engine control module connector breakout)
• (in instrument panel harness, in transfer case shift control module connector breakout)
• (in pto jumper harness) j140
• (in the steering column harness)
• (lower left side of dash) transfer case shift control module
• (on front of right cylinder head) g103
• (top left rear of engine) glow plug control module (gpcm)
• 12v
• A/t iss sig high
• A/t iss sig low
• A/t manual shift switch
• Acc volt
• Acc wakeup srl data
• Automatic transmission
• Automatic transmission shift lever
• B red
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Data bus (-)
• Data bus h
• Fld press sw sig 1
• Fld press sw sig 3
• G201 (upper left corner of dash)
• Gmlan data bus (-)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• J104
• J106
• J125
• J143
• J216
• J230
• Low ref
• Main
• Nca
• Pc sol vlv hi ctrl
• Pc sol vlv low ctrl
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Power take off (pto) module (outside of right front chassis frame)
• Red
• Replicated tos sig
• Ss1
• Ss1 low
• Ss2
• Ss2 low
• Ss3
• Ss3 low
• Tan
• Tap up/ tap down sw sig
• Tcc pcs
• Tft sensor sig
• Tow/ haul sw sig
• Tow/ haul switch
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Transmission control module (left front of engine compt, near fan shroud)
• Vss sig high
• Vss sig low
• W/ electronic & auto 4x4
• W/ electronic steering control
• W/o electronic & auto 4x4
• X1 pnk
• X3 tan

6.6L VIN 6, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008

List of elements for 6.6L VIN 6, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 3500 HD 2008:

• (left front of engine compt, near fan shroud) engine control module (ecm)
• (left side of transmission) automatic transmission input shaft speed (at iss) sensor
• (left side of transmission) automatic transmission turbine speed sensor
• (lower left side of dash) left i/p junction block
• (rear of transmission) vehicle speed sensor (vss)
• (upper left corner of dash) g201
• A4 pnk
• Accy wakeup srl data
• Actuator sply volt
• Automatic transmission
• Aux hvac- ign fuse 45 10a
• Batt +
• Computer data lines system
• Data bus (+)
• Data bus (-)
• Exterior lights system
• Fld press sw sig 2
• Fld press sw sig 4
• G103 (on front of right cylinder head)
• G4 x5
• Gmlan data bus (-)
• Gnd
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1
• Instrument panel cluster (ipc)
• Internal mode switch (ims)
• J106
• J144
• J220 (w/ steering wheel heater)
• Logic
• Main press solenoid
• Mil ctrl
• Mil ind
• Misc ign fuse 40 10a
• P/n
• Park/neutral sig
• Pnk
• Pnk a3
• Power distribution
• Pressure switch manifold (psm)
• Range sw sig a
• Stop lamp switch (top of brake pedal assembly)
• System
• Tan
• Tan e
• Tcc brake sig
• Tcc pcs low
• Tcm-batt fuse 7 15a
• Tft sensor
• Tow/ haul ind
• Trans/ign1 fuse 13 15a
• Transmission control module (left front of engine compt, near fan shroud)
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss hi sig