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

4.3L EXCEPT 4.3L BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE CHARGE IND SIG CHARGE INDICATOR COMPUTER DATA LINES SYSTEM CURRENT SPLY DATA BUS - 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 IGN INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LOGIC LOW REF MEGA FUSE MEGA FUSE (RIGHT REAR OF ENGINE COMPT) 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

6 SPEED A/T 6.0L (VIN K) AUTOMATIC A/C AUXILIARY BATTERY AUXILIARY BATTERY RELAY (IF EQUIPPED) (REAR OF ENGINE COMPT) BLK WIRE BODY BUILDER EMERGENCY LAMP BODY INSTRUMENT CONTROL PANEL MODULE CLUSTER (BCM) (IPC) DK GRN WIRE EMERGENCY VEHICLE WIRING (BLUNT CUT) ENGINE TRANSMISSION CONTROL CONTROL MODULE MODULE (ECM) (TCM) EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE FROM LEFT I/P J/B (DIAGRAM 4 OF 6) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 6 OF 6) FUSE FUSE FUSE FUSE HOLDER (RIGHT SIDE FUSIBLE LINK 1 (14 GA- FUSIBLE LINK 2 (14 GA- FUSIBLE LINK 3 GENERATOR HDLP WASH FUSE 22 HVAC CONTROL MODULE (ON RIGHT FRONT CORNER OF HVAC MODULE) HVAC LTR BATT FUSE 53 FUSE 39 I/P 1 ACCESSORY POWER OUTLET DATA LINK CONNECTOR (DLC) MANUAL A/C IPC FUSE 46 ITBC FUSE 6 TREC FUSE 67 FUSE 37 LEFT BATTERY LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MEGA FUSE (RIGHT REAR OF ENGINE COMPT) MEGA MEGA FUSE FUSE MEGA OF FIREWALL) FUSE MOBILE RADIO FUSE BLOCK FUSE (BEHIND RIGHT SIDE OF DASH) MODULE NCA WIRE ORG/ WIRE POWER SUPPLY POWER SUPPLY, AUXILIARY BATTERY RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY RELAY A RELAY B RIGHT BATTERY RIGHT I/P J/B (IN RIGHT END OF DASH) RUN WIRE STARTER STUD 2 FUSE 63 TCM-BATT ECM- FUSE 14 BATT FUSE 12 TO ROOF BEACON SWITCH (DIAGRAM 2 OF 6) TO STUD 1 FUSE 68 (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 6) TRAILER BRAKE (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ AUXILIARY BATTERY W/ EMERGENCY VEHICLE ROOF LAMP RELAY W/ WRECKER EMERGENCY LAMP PROVISIONS W/ WRECKER RELAY (4.3L) (TOP LEFT REAR OF ENGINE) WHT WIRE WRECKER RELAY WSW/HTR FUSE 66 YEL WIRE

ABS-1 FUSE 61 ABS-2 FUSE 9 BLK WIRE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE (BCM) BRAKE CONTROL COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE COOLED CTSY TRN FUSE FUSE DIM RT STOP BCM FUSE SEATS FUSE FUSE DK GRN WIRE DRIVER DRIVER DOOR LOCK/ WINDOW WINDOW SWITCH SWITCH DRIVER POWER SEAT ADJUSTER DRIVER SEAT 2 CIRCUIT ELEC RUN BOARD FUSE 65 ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 4.3L, 5.3L (VIN O), 6.0L, 5.3L (VIN 3) FROM FUSIBLE LINK 3 (DIAGRAM 1 OF 6) FROM IPC FUSE 46 (DIAGRAM 1 OF 6) FROM PDM FUSE (DIAGRAM 3 OF 6) FSCM FUSE 21 FUEL SYSTEM CONTROL MODULE (FSCM) HEAVY DUTY ABS FUSE 59 HVAC BLWR FUSE 70 HYDRAULIC POWER I/P FUSE BLOCK (LEFT SIDE OF DASH) FROM PDM FUSE (DIAGRAM 3 OF 6) LBEC 2 FUSE 72 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LT DR CIRCUIT BREAKER MBEC 1 FUSE 69 MEMORY DRIVER SEAT SEAT MODULE ADJUSTER (MSM) SWITCH OUTSIDE REARVIEW MIRROR SWITCH PASS SEAT 1 CIRCUIT PASSENGER PASSENGER SEAT SEAT LUMBAR ADJUSTER SWITCH SWITCH PASSENGER POWER SEAT ADJUSTER PASSENGER WINDOW SWITCH PWR REAR WNDW CIRCUIT REAR DSM DDM HVAC FUSE FUSE FUSE REAR REAR SEAT FUSE OBS DET FUSE PWR WPR MIR FUSE FUSE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RIGHT PASSENGER REAR DOOR LOCK/ WINDOW WINDOW SWITCH SWITCH ROOF BEACON RELAY (IN OVERHEAD CONSOLE) ROOF BEACON SWITCH ROOF MOUNTED BEACON (BLUNT CUT) RT DOORS CIRCUIT S/ROOF FUSE 34 SLIDING SLIDING REAR REAR WINDOW WINDOW OPEN CLOSE RELAY RELAY STUD 1 FUSE 68 (AUXILIARY BATTERY) SUNROOF MODULE TO LGM FUSE 71 (DIAGRAM 3 OF 6) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ ACTIVE, VACUUM POWER BRAKE CONTROL W/ INDIVIDUAL FRONT SEAT W/ INDIVIDUAL FRONT SEAT W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ INDIVIDUAL W/O INDIVIDUAL FRONT SEAT, FRONT SEAT, POWER MIRROR POWER MIRROR W/ RESTRAINT SYSTEM W/ ROOF BEACON RELAY W/ SUNROOF W/ TRUCK TRAILER HD WIRING HARNESS W/ WRECKER W/ ROOF, EMERGENCY BEACON VEHICLE RELAY ROOF LAMP RELAY W/O INDIVIDUAL FRONT SEAT W/O INDIVIDUAL FRONT SEAT, POWER MIRROR W/O W/ INDIVIDUAL INDIVIDUAL FRONT SEAT FRONT SEAT WHT WIRE

2 OF 6) AIR BAG BATT FUSE 45 ALC/COMP FUSE 58 AMP FUSE 41 AUTOMATIC A/C AUX PWR 2 FUSE AUX PWR FUSE BLK WIRE BODY CONTROL MODULE (BCM) CENTER CONSOLE ACCESSORY POWER OUTLET CENTER CONSOLE COMPARTMENT ACCESSORY POWER OUTLET CHIME POWER MODULE TAKE OFF (PTO) RELAY COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE CREW CAB W/ INDIVIDUAL FRONT SEAT REAR SEAT ENT FUSE LOCK/UNLOCK PCB RELAY ESC/ALC EXH FUSE 2 EXP/PTO FUSE 47 FROM AUXILIARY BATTERY RUN RELAY (DIAGRAM 1 OF 6) FROM FSCM FUSE 21 (DIAGRAM 2 OF 6) GARAGE DOOR OPENER (GDO) HVAC CONTROL MODULE I/P 2 ACCESSORY POWER OUTLET I/P FUSE BLOCK (LEFT SIDE OF DASH) TO LT DR CIRCUIT BREAKER (DIAGRAM INFLATABLE RESTRAINT VEHICLE ROLLOVER SENSOR INFO FUSE LBEC 1 FUSE 64 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LGM FUSE 71 LUXURY EDITION MERCHANDISED PACKAGE MANUAL A/C NCA WIRE OF HVAC MODULE) ORG/ WIRE PDM FUSE (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE, LUXURY) POWER LOCKS W/O INDIVIDUAL FRONT SEAT, POWER MIRROR POWER TAKE OFF (BLUNT CUT) PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM RADIO RDO FUSE 42 REAR SEAT AUDIO (RSA) CONTROL (IF EQUIPPED) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RIGHT I/P J/B (IN RIGHT END OF DASH) CENTER SEAT ACCESSORY POWER OUTLET STOP IS LPS FUSE LT STOP TRN FUSE LAMPS FUSE TO BODY CONTROL MODULE (DIAGRAM 4 OF 6) TO DLIS FUSE 35 (DIAGRAM 4 OF 6) TO LEFT I/P BLOCK (DIAGRAM 2 OF 6) PASSENGER DOOR LOCK/ WINDOW SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK PCB LOCK PCB RELAY RELAY VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) VIDEO DISPLAY PERFORMANCE ENHANCED AUDIO W/ CUSTOM CONSOLE FRONT COMPT FLOOR W/ HEAD CURTAIN AIR BAG W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ LUXURY W/ REAR SEAT ENTERTAIN- MENT PACKAGE W/ UNIVERSAL GARAGE DOOR OPENER W/ W/O LUXURY LUXURY W/ WRECKER, EMERGENCY VEHICLE ROOF LAMP, ROOF BEACON RELAY W/O LUXURY W/O LUXURY W/ LUXURY W/O RADIO W/O W/ LUXURY LUXURY WHT WIRE WINDSHIELD WASHER SOLVENT HEATER (IF EQUIPPED)

2 SPEED MANUAL SHIFT CONTROL TRANSFER CASE 4.3L 6 SPEED A/T A/C CMPRSR RELAY AUTOMATIC TRANSMISSION AUX HVAC-IGN FUSE 48 BCK/UP LAMP PCB RELAY BLK WIRE BRN WIRE DRL PCB RELAY ECM-IGN FUSE 56 ELECTRONIC ENGINE CONTROL MODULE (ECM) FOG LAMP RELAY FROM BODY CONTROL MODULE (DIAGRAM 4 OF 6) FROM DLIS FUSE 35 (DIAGRAM 4 OF 6) FRONT DRIVE AXLE ACTUATOR FRT WASH PCB RELAY FUEL SYSTEM CONTROL MODULE (FSCM) HDLP LO/HID RELAY HEATED STEERING FUSE HI BEAM PCB RELAY HORN PCB RELAY HVAC-IGN FUSE 55 INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL L/GATE PCB RELAY LEFT AIR TEMPERATURE ACTUATOR (AUTOMATIC A/C) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) (NOT USED) MISC ING FUSE 43 MODE ACTUATOR NCA WIRE PARK LAMP RELAY PNK PNK WIRE PNK WIRE POWER TAKE OFF (IF EQUIPPED) (BLUNT CUT) REAR DEFOG RELAY RECIRCULATION ACTUATOR RED WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SECONDARY FUEL PUMP RELAY (6.0L (VIN K) W/O AUXILIARY FUEL TANK) SEO/ALC AIR BAG FUSE 54 IGN FUSE 40 STOP TRAILER LAMP BRAKE SWITCH CONTROL MODULE (IF EQUIPPED) STRTR RELAY TO FAN 1 FUSE 57 (DIAGRAM WIPER CONTROL 6 OF 6) PCB RELAY FRT WPR FUSE 36 TRANS IGN 1 FUSE 19 TRANSMISSION CONTROL MODULE (TCM) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ AUTO W/O 4.3L, 5.3L (VIN O), 6.0L (VIN K), 5.3L (VIN 3) W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER REAR FUEL CHMSL SPEED WASH PMP PCB PCB PCB RELAY RELAY RELAY RELAY 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

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

AUTOMATIC TRANSMISSION (6.6L) AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH BCK/UP LAMP PCB RELAY BCK/UP RLY LOW SPEED SERIAL DATA BCK/UP SIG BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EXCEPT 6.6L 6.6L GMLAN SERIAL HI SPD GRD GRN WIRE GRY WIRE HIGH SPEED BUS - HIGH SPEED GMLAN SERIAL DATA BUS + INSIDE REARVIEW MIRROR (ISRVM) LEFT BACKUP LAMP LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT GRN WIRE LT GRN/BLK WIRE MJR NCA WIRE ORG/ WIRE PARK/NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION SYSTEM REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REARVIEW CAMERA (LEFT OF TAILGATE HANDLE) RED WIRE RED/BLK WIRE RIGHT BACKUP LAMP SW SIG 4 SW SIG A SW SIG B SW SIG C TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRAILER TOW CIRCUIT TRANS RANGE SIG A TRANS RANGE SIG B TRANS RANGE SIG C TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) TRANSMISSION RANGE SWITCH SIGNAL A TRANSMISSION RANGE SWITCH SIGNAL B TRANSMISSION RANGE SWITCH SIGNAL C TRLR BCK/UP FUSE 10 FUSE 9 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEH BCK/UP FUSE 15 FUSE 14 W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE W/ REARVIEW CAMERA W/ SPO REARVIEW CAMERA WHT WIRE YEL WIRE YEL/BLK WIRE

7 3 SUPPLY VOLT LOW REF BATTERY BLK WIRE COMPUTER DATA LINES SYSTEM DDM FUSE 4 DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE GROUND HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LOGIC HVAC CONTROL MODULE LOW REF ORG/ WIRE PASSENGER DOOR LOCK/WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PDM FUSE 9 POWER DISTRIBUTION SYSTEM REAR DEFOGGER IND REAR DEFOGGER SWITCH RED WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SERIAL DATA SUPPLY VOLT WHT WIRE