GMC Sierra 2500 HD (2002-2012) red Wiring diagrams

10 11 13 14 2500 2501 2501 2500 DATA BUS + DATA BUS - DATA BUS - DATA BUS + ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF VSS LO SIG VSS HI SIG PPL AUTOMATIC TRANSMISSION BATT + BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DK BLU WIRE DK GRN WIRE ECM BATT FUSE 12 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GRN WIRE GRN/WHT WIRE GROUND GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) DIM FUSE 7 HOT W/ RUN/CRNK RELAY ENERGIZED INFLATABLE PNK RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) WIRE INPUT SHAFT SPEED SENSOR (ISS) INPUT SPEED SENSOR (ISS) SIGNAL INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 ISS/OSS SUPPLY VOLTAGE LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MISC-IGN FUSE 43 ORG/WHT WIRE OUTPUT SHAFT SPEED SENSOR (OSS) OUTPUT SPEED SENSOR (OSS) SIGNAL PNK PNK WIRE PNK STEERING WHEEL CNTRL SUP VOLT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL BRAKE SW SIG PPL/WHT WIRE RED WIRE RED/WHT WIRE RES+ SER DATA SET- SOUND SYSTEMS STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE W/O TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE WHT/BLK WIRE YEL WIRE

56 39 PNK IGNITION PARK/NEUTRAL SIG WIRE ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM EXCEPT SEO FUSE GRY WIRE HOT AT ALL TIMES INPUT SPEED SENSOR (IN TRANSMISSION) INSTRUMENT PANEL CLUSTER (IPC) INTERNAL MODE SWITCH IPC/DIC FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE P/N PNK 10 11 12 WIRE PNK 7 8 9 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL PPL 1 2 PPL/BLK WIRE PPL/WHT WIRE PRESSURE SWITCH MANIFOLD PTO STATUS RED WIRE RED/BLK WIRE SEO SPLICE PACK TAN WIRE TAN/WHT WIRE TFT SENSOR TOW/HAUL SWITCH TRANSFER CASE) TURBINE SPEED SENSOR (IN TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

A/T ISS SIG LOW VSS SIG LOW A/T SHIFT LEVER ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BRAKE FUSE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRNK FUSE DATA BUS H DATA BUS H DATA BUS L DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE FLD PRESS SW SIG 4 TCC PCS LOW FLD PRESS SW SIG 2 TURB SPEED SW SIG GRD GRD B+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) IGN 0 FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN MALFUNC IND LAMP NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 12 13 14 WIRE PNK FLD PRESS SW SIG 1 VSS SIG HIGH WIRE PNK IGN 0 VOLT WIRE PNK PNK PNK WIRE PNK PPL WIRE PNK WIRE PPL PPL CRANK VOLT TORQUE SIG PPL PPL 1 2 PPL/WHT WIRE PRESS CONTROL SOLE 2 RANGE SW SIG A MAIN PRESS SOLENOID RED WIRE RED/BLK WIRE REQ TORQUE DATA BUS H RUN WIRE SERIAL DATA DATA BUS L SHIFT SOLENOIDS SOLENOIDS STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PSC TORQUE SIG PTO SIG TR SW SIG B TFT SENSOR SIG TR SW SIG C TR SW SIG P TURB SPEED SW UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) TCM B FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM EXCEPT SEO FUSE GRY WIRE HOT AT ALL TIMES INPUT SPEED SENSOR (IN TRANSMISSION) INSTRUMENT PANEL CLUSTER (IPC) INTERNAL MODE SWITCH IPC/DIC FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE P/N PNK 12 13 14 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL PPL 1 2 PPL/BLK WIRE PPL/WHT WIRE PRESSURE SWITCH MANIFOLD RED WIRE RED/BLK WIRE SEO SPLICE PACK TAN/BLK WIRE TAN/WHT WIRE TFT SENSOR TOW/HAUL SWITCH TRANSFER CASE) TURBINE SPEED SENSOR (IN TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

ABS PUMP MOTOR ABS-1 FUSE 61 FUSE 56 ABS-2 FUSE 9 FUSE 8 AGLE SNS A BLK WIRE BLK/WHT WIRE BRK SNS VEH SPD SIG LOW REF BRN WIRE CAN H GND CAN L B+ GMLAN + GMLAN + LOW REF AGLE SNS B AGLE SNS C RR WHL SNS COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) GMLAN - GMLAN - PWR BRK H GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LF WHL SNS COMM DATA LOGIC LR WHL SNS LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL/WHT WIRE PWR BRK L ANGLE SNS RADIO RED WIRE RED/BLK WIRE RF WHL SNS RIGHT REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ LUXURY EDITION W/O LUXURY EDITION EXCEPT 6.6L YEL WIRE YEL/BLK WIRE

12 13 PPL BRK SIG 16 17 19 GMLAN + GMLAN - COMM DATA 6.0L ABS INDICATOR ABS PUMP MOTOR ABS-1 FUSE 61 FUSE 56 B+ GMLAN + GMLAN + BRK SNS BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH BRAKE INDICATOR COMM DATA VEH SPD SIG COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.0L (VIN K) FUEL SYSTEM CONTROL MODULE (FSCM) (UNDER REAR OF VEHICLE) GRY WIRE GRY/WHT WIRE HEAVY DUTY ABS FUSE 59 FUSE 55 HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LF WHL SNS LOGIC LOW REF GND GMLAN - GMLAN - VEH SPD SIG LT BLU WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) POWER TAKE OFF (PTO) MODULE (OUTSIDE OF RIGHT FRONT CHASSIS FRAME) PPL PRK BRK SW RADIO RED WIRE RED/BLK WIRE RF WHL SNS RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE W/ LUXURY EDITION W/O LUXURY EDITION EXCEPT 6.6L 6.6L YEL WIRE YEL/BLK WIRE

ACCESSORY WAKEUP SERIAL DATA ANTI-LOCK BRAKES, EXTERIOR LIGHTS SYSTEMS ANTI-THEFT SYSTEM BATTERY BCM FUSE 15 BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SEATS SYSTEMS CRUISE CTRL IND DIM SIG CTSY FUSE 5 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRL RELAY CTRL EXHAUST BRK SW SIG FOG LAMP RELAY CTRL FRONT FOG LAMP SW SIG/ENABLE GAS DIESEL GROUND GRY WIRE HEADLAMP HI BEAM RELAY CTRL HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA BUS + HOOD AJAR SW SIG HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P LAMP DIMMER SW SIG INDICATOR DIM CTRL INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS, EXTERIOR LIGHTS SYSTEMS IPC FUSE 46 FUSE 43 IS LPS FUSE 17 LED BACKLIGHT DIM CTRL LINER INTERCONNECT BUS LO SPD SERIAL DATA LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT STOP TRN FUSE 6 LT TRLR TURN SIG LAMP ORG/ WIRE ORG/WHT WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL/WHT WIRE RED WIRE RED/WHT WIRE RF TURN SIG LAMP SUPPLY RT STOP TRN FUSE 8 RT TRLR TURN SIG LAMP RUN/CRANK RELAY CTRL SECURITY IND CTRL SERIAL DATA COMM ENABLE STOP LAMPS FUSE 12 STP LP SW SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK WASHER RELAY CTRL WHT WIRE WIPER MOTOR PARK SW SIG WIPER/WASHER SYSTEM YEL WIRE

7 3 SUPPLY VOLT LOW REF BATTERY BLK WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DK GRN WIRE DRIVER DOOR SWITCH (DDS) FUSE BLOCK (I/P) (LEFT SIDE OF DASH) GROUND HOT AT ALL TIMES HVAC CONTROL MODULE JUNCTION BLOCK (RIGHT I/P) (IN RIGHT END OF DASH) LOW REF OUTSIDE REARVIEW MIRROR- DRIVER OUTSIDE REARVIEW MIRROR- PASSENGER PASSENGER DOOR SWITCH (PDS) PDM FUSE POWER DISTRIBUTION SYSTEM R DEF REAR DEFOG SWITCH RED WIRE RED/WHT WIRE SERIAL DATA SUPPLY VOLT WHT WIRE

ANTENNA BLK WIRE BREAKOUT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DSM FUSE FUSE BLOCK (I/P) (LEFT SIDE OF DASH) GRD (BELOW RIGHT SIDE OF PASSENGER SEAT) GRN WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) KEYLESS ENTRY ANTENNA LEFT FRONT TIRE PRESSURE MONITOR SENSOR LEFT REAR TIRE PRESSURE MONITOR SENSOR LO SPD SERIAL DATA LO-SPD DATA (TPM) IGN LOW TIRE PRESSURE IND MESSAGE REQUEST NCA WIRE RED WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPARTMENT) RIGHT FRONT TIRE PRESSURE MONITOR SENSOR RIGHT REAR TIRE PRESSURE MONITOR SENSOR SOLID STATE W/ABS WHT WIRE

2501 2500 7631 944 COMPUTER DATA LINES SYSTEM 2501 2500 COMPUTER DATA LINES SYSTEM B+ RLY ENABLE BLK RED/ WIRE BLK WIRE BRN WIRE COMM DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE EXCEPT 10 SERIES EXCEPT 10 SERIES 10 SERIES EXCEPT 6.6L 6.6L W/O 10 SERIES FSCM FUSE 21 GMLAN - GMLAN + GMLAN - GMLAN + LOW REF RLY FEEDBACK HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) ITBC FUSE 6 FUSE 19 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MISC IGN FUSE 43 FUSE 40 PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/WHT WIRE STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) STUD 2 FUSE 63 FUSE 58 TAN WIRE TAN/BLK WIRE TCC BRK SIG TRAILER BRAKE (BLUNT CUT) TRAILER BRAKE CONTROL SWITCH TRAILER CONNECTOR (AT REAR OF VEHICLE) TRAILER) TRL BRK RLY IGN 1 VOLT TRL BRK SIG TRL BRK SIG RLY FEEDBACK W/ HEAVY DUTY TRAILER WHEEL HARNESS TRAILER WHEEL TRAILER CAMPER TRAILER PROVISION (BLUNT CUT) (ON LEFT REAR BODY MOUNT) WHT WIRE YEL WIRE YEL/BLK WIRE