GMC Cab & Chassis Sierra 3500 HD (2008-2012) gry 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

6.0L 4.3L 6.2L, 5.3L, 4.8L BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE CHARGE IND SIG CHARGE LOW INDICATOR SPEED GM LAN SERIAL DATA LOGIC COMPUTER DATA LINES SYSTEM CURRENT SPLY DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GENERATOR B+ GENERATOR SIG GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LOW REF MEGA FUSE PNK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY RED WIRE RED/WHT WIRE RIGHT BATTERY SENS SIG SERIAL DATA TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (ON POSITIVE BATTERY TERMINAL) VOLT W/ 10 SERIES WHT WIRE

4.8L 4.3L 5.3L, 6.2L 6.0L 6 SPEED A/T 6.0L 4.3L 4.8L, 5.3L, 6.2L 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 BLK/WHT 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) GRY WIRE HEAD IGN 3 VOLT IGNITION SWITCH LOCK LOW REF 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, AUXILIARY BATTERY PPL RED WIRE RED/BLK WIRE RIGHT BATTERY RUN WIRE SERIAL DATA 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) TRANSMISSION PARK/NEUTRAL UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) STRTR RELAY WHT WIRE YEL WIRE YEL/BLK WIRE

2-HI IND 4-HI IND 4-LO IND 5 VOLT REF INCRMT ENCODER SIG 6.0L (VIN G) 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 1 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 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 CTRL 2 HI IND CTRL ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PULSE SIG RED/BLK WIRE RIGHT I/P JUNCTION BLOCK SER DATA 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 WIPER/WASHER SYSTEM YEL WIRE

2-HI IND 4-HI IND 4-LO IND 5 VOLT REF 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 1 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 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 CTRL 2 HI IND CTRL ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PULSE SIG RED/BLK WIRE SER DATA 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

1 14 11 4 6 PPL PNK ELEM CTRL SPLY VOLT ELEM CTRL ELEM CTRL SPLY VOLT WIRE 1 4 5 6 GND GND B+ B+ 2 3 5 6 PNK LOW REF LOW REF LOW REF LOW REF WIRE 4 1 3 2 TEMP SIG TEMP SIG TEMP SIG TEMP SIG BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER'S SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER'S SEAT CUSHION) DRIVER SEAT 2 GRY WIRE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDER FRONT OF DRIVER'S SEAT) NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PNK ELEM CTRL WIRE PNK WIRE PPL RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE YEL WIRE YEL/BLK WIRE

4 6 B+ GND BACK SEAT IND BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CUSHION/BACK IND PPL CUSHION/BACK SW DDM FUSE 4 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER HEATED SEAT SWITCH DSM FUSE 25 GROUND DISTRIBUTION SYSTEM GRY WIRE HIGH IND HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LOW IND LT BLU WIRE MED IND PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER HEATED SEAT SWITCH PDM FUSE 9 POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SEAT BACK IND SEAT BACK SW SERIAL DATA WHT/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CUSHION, BACK HEAT 1 2 3 4 5 6 7 8 B+ GROUND BACK HEAT BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CUSHION TEMP SEAT BACK TEMP BACK HEAT DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER'S SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER'S SEAT CUSHION) EXCEPT 6.6L 6.6L FUSE 37 FUSE 34 GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HEATED SEAT CONTROL MODULE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW HEAT IND HIGH HEAT IND LOW HEAT IND HIGH HEAT IND LOW SPEED GMLAN LT BLU WIRE LT GRN WIRE MEDIUM HEAT IND BACK, CUSHION HEAT IND NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PNK DK PPL WIRE PNK LOW REF LOW REF LOW REF LOW REF WIRE PNK WIRE PPL RED/WHT WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

13 14 15 16 17 PPL BACK BACK IND BLK WIRE BLU WIRE BRN WIRE CUSHION, BACK CUSHION, BACK IND DK BLU WIRE DK GRN WIRE DRIVER HEATED SEAT SWITCH GRY WIRE LT BLU WIRE MID NCA WIRE PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PASSENGER HEATED SEAT SWITCH PNK LT DK WIRE PNK LT WIRE PNK WIRE PPL PPL/WHT WIRE TAN WIRE WHT/BLK WIRE YEL WIRE

1 2 4 10 5 7 RETRACT CTRL EXTEND CTRL SENS SIG LOW REF SENS SIG 2 6 1 7 3 9 4 POSITION CTRL MTR COMM POSITION CTRL SPLY VOLT LOW REF 4 6 B+ GND 9 2 12 SERIAL DATA PNK WIRE AUTOMATIC DAY/NIGHT MIRROR BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM ELECTROCHROMIC DDM FUSE 4 DEFOGGER SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOWN L/R SELECT DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR EXTEND GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, L/R SELECT SW PWR LEFT LOGIC LT BLU WIRE MIRROR CIRCUIT OUTSIDE REARVIEW MIRROR SWITCH PNK WIRE RED/WHT WIRE RETRACT RIGHT WHT WIRE YEL WIRE