GMC Sierra 2500 HD (2002-2012) blk/wht 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

44 57 15 49 29 SER DATA BUS- SER DATA BUS+ 7 20 2 4 6 MOTOR CTRL 2 MOTOR CTRL-1 83 77 STOP LAMP SW SIG BATT + ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL BATT + BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DK BLU WIRE DK GRN WIRE ECM BATT FUSE 11 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GMLAN DATA BUS- GRN/WHT WIRE GROUND GROUND GROUND 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 HOT W/ RUN/CRNK RELAY ENERGIZED INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 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 40 ORG/WHT WIRE PNK STEERING WHEEL CNTRL SUP VOLT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL BRAKE SW SIG PPL/WHT 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 SIG LOW REF TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (REAR OF TRANSMISSION) VSS HI SIG VSS LO SIG 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

2500 2501 COMPUTER DATA LINES SYSTEM 66 46 DATA BUS + DATA BUS - BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ECT SENS SIG ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) ENGINE COOLANT LEVEL SWITCH (ON BOTTOM OF SURGE TANK) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP FRONT CENTER OF ENGINE) ENGINE COOLING FAN (FRONT CENTER OF ENGINE COMPT) FAN FUSE 68 FAN RLY RELAY GMLAN L GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOGIC B+ GND LOW REF LT GRN WIRE MANUAL A/C AUTOMATIC A/C RLY SPD SIG SERIAL DATA SPD SIG SW SIG TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

4.3L 6 SPEED A/T ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION AUXILIARY FLUID PUMP CONTROL MODULE BARE BARE BARE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY CONTROL MODULE (BCM) DIESEL ENGINE CONTROL MODULE ENGINE CONTROL MODULE (ECM) ENGINE COOLANT LEVEL SWITCH EXCEPT 4.3L 4.3L EXCEPT DIESEL EXCEPT HYBRID EXHAUST GAS RECIRCULATION (EGR) VALVE SHIELD FAN HIGH RELAY RIGHT ENGINE COOLING FAN RESISTOR FROM FROM FRONT DOME/ READING LAMPS FUEL PRESSURE REGULATOR 1 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 1 SHIELD FUSE FUSE GLOW PLUG CONTROL MODULE (GPCM) GLOW PLUG FUEL FILTER CONTROL PRESSURE MODULE SWITCH (GPCM) GRY WIRE HYBRID PROPULSION IGNITION CONTROL MODULE (ICM) INTAKE AIR VALVE SHIELD EXHAUST GAS RECIRCULATION COOLER BYPASS SOLENOID VALVE MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSORS MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NCA WIRE PARK/ NEUTRAL POSITION SWITCH RELAY RELAY RIGHT ENGINE COOLING FAN ROOF ROOF BEACON BEACON RELAY SWITCH SHIELD BARE BARE SPEED A/T TO RIGHT FROM BATTERY (DIAGRAM (DIAGRAM 1 OF 6) 1 OF 6) TRANSMISSION CONTROL MODULE (TCM) W/ HYBRID PROPULSION W/ ROOF MOUNTED LAMP W/ WRECKER EMERGENCY LAMP, BODY BUILDER EMERGENCY LAMP, ROOF MOUNTED LAMP WATER IN-FUEL SENSOR WHT WIRE

AMBIENT LIGHT SENSOR AMBIENT LIGHT/ SUNLOAD SENSOR AUTOMATIC A/C AUTOMATIC A/C MANUAL A/C 8 3 AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BRAKE FLUID LEVEL SWITCH DATA LINK CONNECTOR DRIVER DOOR LATCH DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER DRIVER DOOR DOOR LOCK LATCH SWITCH DRIVER SEAT BACK VENTILATION HEATING, COOLING MODULE DRIVER SEAT CUSHION VENTILATION HEATING, COOLING MODULE DRIVER WINDOW SWITCH EXCEPT HYBRID FRONT DOOR LOCK DIODE FRONT DOOR UNLOCK DIODE HEADLAMP, PANEL I/P DIMMER MULTI-FUNCTION SWITCH SWITCH HVAC CONTROL MODULE HYBRID, W/O NON BUCKET FRONT INDIVIDUAL SEAT INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) MANUAL A/C NCA WIRE PASSENGER DOOR LATCH PASSENGER DOOR LOCK SWITCH PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT BACK VENTILATION HEATING, COOLING MODULE PASSENGER SEAT CUSHION VENTILATION HEATING, COOLING MODULE PASSENGER SEAT LUMBAR SWITCH POWER WINDOW REAR DOOR LOCK DIODE REAR DOOR UNLOCK DIODE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) THEFT DETERRENT MODULE TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ FRONT HEATED/ COOLING SEATS W/ NON BUCKET FRONT INDIVIDUAL SEAT W/O W/O NON BUCKET, FRONT INDIVIDUAL SEAT, W/ COMFORT, DECOR LEVEL 3 W/O POWER DOOR LOCK CONTROL W/O POWER W/ POWER DOOR LOCK DOOR LOCK CONTROL CONTROL WHT WIRE WINDSHIELD WIPER (HYBRID) MOTOR A/C COMPRESSOR

BLK WIRE BLK/WHT WIRE CENTER CENTER SEAT CONSOLE ACCESSORY ACCESSORY POWER POWER OUTLET OUTLET CONSOLE COMPARTMENT ACCESSORY POWER OUTLET CREW CAB CREW CAB EXTENDED CAB CREW CAB/ EXTENDED CAB W/ PERFORMANCE ENHANCED AUDIO, FRONT COMPARTMENT CONSOLE DRIVE MOTOR BATTERY NEGATIVE HIGH VOLTAGE CONTACTOR RELAY DRIVER GENERATOR MOTOR BATTERY GENERATOR VENT FAN BATTERY DRIVER MOTOR GENERATOR BATTERY CONTROL MODULE DRIVER SEAT ADJUSTER W/ MULTI- SWITCH DIRECTIONAL PASSENGER POWER SEAT ADJUSTER EXCEPT CREW CAB EXCEPT HYBRID HYBRID EXCEPT REGULAR CAB EXTENDED CAB FROM FRONT PASSENGER/CHILD PRESENCE DETECTOR GMC GRD GRD GRD HYBRID EXCEPT HYBRID FROM FROM HYBRID W/ NON BUCKET FRONT INDIVIDUAL SEAT INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) LEFT FRONT REAR FENDER CLEARANCE LAMP LEFT LEFT REAR SIDE BACKUP MARKER LAMP LAMP LEFT LICENSE LAMP LEFT REAR LEFT REAR WINDOW DOOR LATCH SWITCH LEFT REAR RIGHT FRONT MOST FENDER REAR FENDER CLEARANCE CLEARANCE LAMP LAMP LOWER LEFT LEFT TAIL/ BACKUP STOP, TURN LAMP SIGNAL LAMP LOWER LEFT UPPER LEFT TAIL/ TAIL/ STOP, TURN STOP, TURN SIGNAL LAMP SIGNAL LAMP MEMORY SEAT MODULE (MSM) NCA WIRE PASSENGER SEAT BELT BUCKLE REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REAR OBJECT SENSOR CONTROL MODULE REAR WINDOW DEFOGGER GRID RED WIRE RIGHT LICENSE LAMP RIGHT REAR DOOR LATCH RIGHT REAR MOST FENDER CLEARANCE TAILGATE MARKER LAMP LAMP RIGHT REAR WINDOW SWITCH TO DRIVER MOTOR GENERATOR TO GROUND BATTERY (DIAGRAM (DIAGRAM 6 OF 6) 6 OF 6) TRAILER BRAKE CONTROL RELAY TRAILER BRAKE CONTROL MODULE UPPER LEFT TAIL/ STOP, TURN SIGNAL LAMP W/ FULL FEATURE CENTER SEAT W/ NON BUCKET FRONT INDIVIDUAL SEAT W/ POWER WINDOWS, FULL FEATURE CENTER SEAT W/ REAR DEFOGGER W/ REAR DUAL WHEEL W/ TRAILER 6.6L, 6.0L (VIN G) BRAKE W/ACTIVE BRAKE W/O ACTIVE BRAKE W/O MULTI- DIRECTIONAL PASSENGER POWER SEAT ADJUSTER W/O NON BUCKET FRONT INDIVIDUAL SEAT W/O POWER WINDOWS, FULL FEATURE CENTER SEAT W/O REAR DEFOGGER W/O REAR PARKING ASSIST, LOW TIRE PRESSURE, REMOTE ENTRY W/O TRAILER BRAKE WHT WIRE YEL WIRE

6399 (OR 821) 71 72 73 VSS HIGH SIG VSS LO SIG GND A/C CL CTL A/C PRES SIG LO REF AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AXL SW SIG BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRK SW SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUEL CTL FUEL CTL-SEC STRT RLY CTL FUEL LVL-SEC FUEL PMP RELAY FUEL PUMP FUSE 20 FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GMLAN - GMLAN + GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES IAT SIG LO REF LO REF LO REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF SIG MIL CTL PPL NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL FUEL LVL-PRI CFAN HI CTL ACC SER DATA PPL LO REF FTP SIG PPL/WHT WIRE PRIMARY FUEL PUMP, REAR FUEL PUMP, SENDER ASSEMBLY (6.0L (VIN K)) (IN REAR FUEL TANK) RED/WHT WIRE SECONDARY FUEL PUMP (FP) RELAY (6.0L (VIN K)) (LEFT SIDE OF ENGINE COMPT) SENDER ASSEMBLY (INSIDE FUEL TANK) STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VSS CFAN LO CTL PWTN RLY CTL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE ECM BATT FUSE 12 ECM-IGN FUSE 56 ECM/THROT CONT FUSE 5 ENG FUSE 4 FUEL INJECTORS (TOP OF LEFT CYLINDER BANK) FUEL INJECTORS (TOP OF RIGHT CYLINDER BANK) FUSE 18 (DIAGRAM 3 OF 4) HOT AT ALL TIMES HOT IN RUN OR START IAT INJ-A FUSE 24 INJ-B FUSE 13 LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE MAF ORG/BLK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL PNK PNK WIRE PWR/ TRN RELAY RED/WHT WIRE SNSR FUSE 8 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCM- BATT FUSE 14 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AUX HVAC-IGN FUSE 48 BANK 1 SENSOR 1 (UPSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 1 (UPSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON MASTER CYLINDER) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) ENGINE OIL PRESSURE IND FROM INJ-B FUSE 13 (DIAGRAM 2 OF 4) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC FUSE 46 HOT IN RUN OR START IGN B+ IGN MALFUNCTION INDICATOR LAMP INSTRUMENT PANEL CLUSTER (IPC) KNOCK SENSOR 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR 2 (LOWER RIGHT SIDE OF ENGINE) LO BUS LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/BLK WIRE PNK PNK 38 39 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED/WHT WIRE SNSR FUSE 18 TAN WIRE TAN/WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

23 1786 STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM 2501 6399 COMPUTER DATA LINES SYSTEM TRANSMISSIONS SYSTEM 5985 2500 COMPUTER DATA LINES SYSTEM ACC WAKE SER DATA DATA BUS + AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE DATA BUS - VSS SIG DK BLU WIRE DK COMPUTER DATA LINES SYSTEM DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY EGR MOTOR HIGH LOW REF A/C REFRIG SIG FUEL LEVEL SENSOR SIG ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) ENGINE OIL PRESSURE GAUGE ENGINE OIL PRESSURE IND EXHAUST GAS RECIRCULATION (EGR) TEMPERATURE SENSOR 2 (TOP RIGHT FRONT OF ENGINE) FUEL GAUGE FUEL PUMP LOW REF FUEL RAIL PRESSURE (FRP) SENSOR (TOP LEFT REAR OF ENGINE) FUEL RAIL TEMPERATURE (FRT) SENSOR (TOP LEFT REAR OF ENGINE) GENERATOR SIG PARK/NEUTRAL SIG GRN WIRE GRY WIRE IND INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW REF LOW REF MIL CONTROL A/C COMPRESS LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP NCA WIRE ORG/BLK WIRE PNK PNK PNK 1 2 3 WIRE PNK WIRE POWERTRAIN RLY CTRL MOTOR CTRL 1 IGN 1 VOLT PPL PRIMARY FUEL LEVEL SENSOR (IN FRONT FUEL TANK) RED WIRE STARTING/ CHARGING SYSTEM TACHOMETER TAN WIRE TAN/BLK WIRE VEHICLE SPEED SIG WAIT TO WAIT TO START WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE