GMC Cab & Chassis Sierra 3500 HD (2008-2012) blk Wiring diagrams

A/T MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INPUT SHAFT SPEED (ISS) AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (ISS) AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE FROM AUTOMATIC TRANSMISSION (DIAGRAM 1 OF 2) FTP SWITCH 1 VOLTAGE FTP SWITCH 3 VOLTAGE FTP SWITCH 4 VOLTAGE FTP SWITCH 5 VOLTAGE GMLAN GMLAN SERIAL SERIAL DATA DATA BUS - BUS + GMLAN SERIAL DATA BUS + GRN WIRE GRY WIRE INPUT SPEED SENSOR (ISS) SIGNAL ISS/OSS SUPPLY VOLTAGE LT BLU WIRE NCA WIRE OUTPUT SPEED SENSOR (OSS) SIGNAL PNK WIRE PPL RED WIRE REF SENSOR TAN WIRE TAN/BLK WIRE TAP TOW/ UP/ HAUL TAP SW DOWN SIG SW SIG TOW/ HAUL SWITCH TRANSMISSION CONTROL MODULE (TCM) CONTROL SOLENOID VALVE ASSEMBLY TRANSMISSION RANGE SWITCH SIG A TRANSMISSION RANGE SWITCH SIG B TRANSMISSION RANGE SWITCH SIG C TRANSMISSION RANGE SWITCH SIG P VOLT W/ ELECTRONIC STEERING CONTROL W/O 2 SPEED TRANSFER CASE WHT WIRE YEL WIRE

2 MODE HYBRID 6 SPEED A/T 4.3L EXCEPT 4.3L 6.6L ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) HEAD IGN IGNITION SWITCH LOCK MEGA FUSE ORG/ WIRE ORG/BLK WIRE PARK/ NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PARK/NEUTRAL SIGNAL PNK/BLK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY PPL RED WIRE RED/BLK WIRE RIGHT BATTERY RUN WIRE STARTER MOTOR STRT RLY CTRL STRTR FUSE 62 (EXCEPT 6.6L) FUSE 57 (6.6L) TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) STRTR RELAY WHT WIRE YEL WIRE YEL/BLK WIRE

A/T MANUAL SHIFT SWITCH ACC WAKEUP SRL DATA AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION SHIFT LEVER BLK TAN/ WIRE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DATA BUS - DK BLU WIRE DK GRN WIRE FLD PRESS SW SIG C LOW REF GMLAN DATA BUS- GMLAN SERIAL DATA BUS + GMLAN SERIAL DATA REF BUS + GND B+ PC SOL VLV HI CTRL GRY WIRE LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN PCS NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PC SOL VLV LOW CTRL PNK FLD PRESS SW SIG A WIRE PNK WIRE POWER TAKE OFF (BLUNT CUT) POWER TAKE OFF (PTO) MODULE (OUTSIDE OF RIGHT FRONT CHASSIS FRAME) PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE REPLICATED TOS SIG SSC VLV CTRL VLV CTRL TR SW SIG B TFT SENSOR SIG TAN WIRE TAN/BLK WIRE TAP TOW/ UP/ HAUL TAP SW DOWN SIG VOLT SW SIG TCC PCS TOW/ HAUL SWITCH TR SW SIG C TR SW SIG P TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) VSS HIGH SIG VSS SIG LOW W/ ELECTRONIC STEERING CONTROL W/O 2 SPEED TRANSFER CASE WHT WIRE YEL WIRE YEL/BLK WIRE

451 1840 323 GND BATT + ACTUATOR SPLY VOLT 771 1530 RANGE SW SIG A MAIN PRESS SOL CTRL AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUX HVAC- IGN FUSE 45 BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM GMLAN DATA BUS (+) DK BLU WIRE EXTERIOR LIGHTS SYSTEM PNK PNK WIRE FUSE 13 GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) HOT W/ RUN/CRNK RELAY ENERGIZED IGN IGN 1 VOLT INSTRUMENT PANEL CLUSTER (IPC) LOGIC LT BLU WIRE LT BLU/ WHT WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MIL IND MISC IGN FUSE 40 ORG/ WIRE ORG/BLK WIRE P/N PNK PNK PNK PNK WIRE PNK WIRE PNK/ WHT WIRE PNK/BLK WIRE PNK/WHT WIRE POWER PPL/WHT WIRE RED/WHT WIRE STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) SYSTEM DISTRIBUTION TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TCM-BATT FUSE 7 TFT SENSOR TOW/ HAUL IND TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) VSS HI SIG WHT LT BLU/ WIRE WHT PNK/ WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

AUXILIARY GENERATOR (W/ DUAL GENERATOR) BLK WIRE BRN WIRE CHARGE IND SIG CHARGE INDICATOR COMPUTER DATA LINES SYSTEM DATA BUS - DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF GENERATOR B+ GENERATOR SIG GRY WIRE HOT AT ALL TIMES IGN INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 LOGIC MEGA FUSE POWER DISTRIBUTION SYSTEM RED WIRE RED/WHT WIRE RIGHT BATTERY TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (RIGHT SIDE OF FIREWALL) VOLT W/ DUAL GENERATOR WHT WIRE

2 MODE HYBRID 6 SPEED A/T 4.3L EXCEPT 4.3L 6.6L ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) HEAD IGN IGNITION SWITCH LOCK MEGA FUSE ORG/ WIRE ORG/BLK WIRE PARK/ NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PARK/NEUTRAL SIGNAL PNK/BLK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY PPL RED WIRE RED/BLK WIRE RIGHT BATTERY RUN WIRE STARTER MOTOR STRT RLY CTRL STRTR FUSE 62 (EXCEPT 6.6L) FUSE 57 (6.6L) TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) STRTR RELAY WHT WIRE YEL WIRE YEL/BLK WIRE

6.0L (VIN J) PNK PPL/ WIRE 7-8, 13-14) AIR BAG IGN FUSE 40 FUSE 37 BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DISABLE SWITCH DISABLE SW RTN GMLAN SERIAL DATA PNK WIRE DK GRN WIRE EXCEPT 6.0L (VIN J) EXTENDED CAB CREW CAB GRY WIRE HOT W/ RUN/CRNK RELAY ENERGIZED INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (W/MANUAL SUPPRESSION SWITCH) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER DRIVER'S SEAT) INFLATABLE RESTRAINT STEERING WHEEL MODULE (IN STEERING WHEEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) LEFT FRONT INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN DRIVER'S DOOR) LEFT I/P JUNCTION BLOCK LT BLU WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PNK 1 2 WIRE PNK IGN 1 VOLTAGE WIRE PNK PNK WIRE PNK WIRE PPL PPL PNK WIRE PPL SHORTING BAR PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT FRONT INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN PASSENGER'S DOOR) SHORTING BAR SHORTING SHORTING BAR BAR STAGE 1 STAGE 2 TAN WIRE TAN/BLK WIRE TAN/ORG WIRE W/ 10 SERIES W/ 10 SERIES W/O 10 SERIES 1 1 W/ 20/30/31 SERIES W/ CHILD PRESENCE DETECTOR W/O CHILD PRESENCE DETECTOR WHT WIRE WHT/BLK WIRE YEL WIRE

"B" PILLAR) 1 2 3 4 5 6 VOLTAGE DATA 6 6 RT HIGH CTRL RT LOW CTRL AIR BAG IND BACK LIGHT IND BAR SHORTING BELT IND BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM CTRL CTRL ON IND DATA SERIAL DETECTOR) (UNDER FRONT PASSENGER SEAT) DK BLU WIRE DK GRN WIRE DK GRN/BLK WIRE DK GRN/WHT WIRE DRIVER SEAT BELT PRETENSIONER (ON LEFT EXCEPT 6.0L (VIN J) EXCEPT CREW CAB EXTENDED CAB CREW CAB GRN WIRE IGN INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE (W/ CHILD PRESENCE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION PNK BLOCK (LOWER LEFT SIDE OF DASH) EXTENDED CAB CREW CAB WIRE LEFT REAR INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN LEFT REAR DOOR) LOGIC LOW REF SEAT BELT SENS SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MODULE (SDM) (UNDER DRIVER'S SEAT) NCA WIRE OFF IND ORG/ WIRE PASS SEAT PASSENGER AIR BAG OFF PASSENGER AIR BAG ON PASSENGER SEAT BELT IND PASSENGER SEAT BELT SWITCH (W/ 10 SERIES) PNK 1 2 WIRE PNK WIRE PNK/BLK WIRE PPL RED WIRE RED/WHT WIRE RIGHT REAR INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN RIGHT REAR DOOR) SEAT BELT IND SERIAL DATA SHORTING BAR TAN WIRE TAN/WHT WIRE W/ CHILD PRESENCE DETECTOR W/ MULTI- DIRECTIONAL PASSENGER POWER SEAT ADJUSTER W/O NON-BUCKET FRONT INDIVIDUAL SEAT W/ NON-BUCKET FRONT INDIVIDUAL SEAT WHT WIRE WHT/BLK WIRE YEL/BLK WIRE

4.3L 4.8L, 5.3L, 4.3L DIESEL 6.0L, 6.2L 43 44 57 44 28 27 GMLAN BUS + GMLAN BUS - AUX HVAC-IGN FUSE 48 FUSE 45 AXLE SW SIG BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FRONT AXLE ACTUATOR (ON FRONT AXLE ASSEMBLY) GAS DIESEL GRY/BLK WIRE HOT W/ RUN/CRNK RELAY ENERGIZED IGN IGN LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOGIC PNK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS IGN 1 FUSE 19 FUSE 13 TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)

2-HI IND 4-HI IND 4-LO IND 5 VOLT INCRMT ENCODER SIG 7475 7476 1693 1566 1565 PPL ACCY WAKEUP SRL DATA ASSEMBLY AUX HVAC-IGN FUSE 48 FUSE 45 AXLE ACTR CTRL AXLE SW SIG GMLAN BUS - GMLAN BUS + IGN VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DIRTN SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FRONT AXLE ACTUATOR FUSE 19 FUSE 13 GAS GAS DIESEL GMLAN BUS - GMLAN BUS + INCRMT ENCODER SIG GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED HOT W/ RUN/CRNK RELAY ENERGIZED UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IGN IGN LOGIC INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LO REF SW SIG 4 HI IND CTRL 4 LO IND CTRL LOGIC LOW REF LT BLU WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE MISC IGN FUSE 43 FUSE 40 MTR CTRL B MTR CTRL A BATT + GND NEUTRAL IND NEUTRAL IND 2 HI IND CTRL ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PULSE SIG RED/BLK WIRE SHIFT MOTOR TAN WIRE TAN/BLK WIRE TAN/WHT WIRE 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) TREC FUSE 67 FUSE 62 WHT WIRE WHT/GRN WIRE YEL WIRE