GMC Sierra 2500 HD (2002-2012) org/ Wiring diagrams

BLK WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR LEFT KICK PANEL) BRN WIRE CARGO LAMP CARGO LAMP SWITCH CARGO LP SW DOME LP SW RT DR JAMB LT DOOR JAMB DOME LP DFT COURTESY LAMP RELAY CTSY LP FUSE CTSY LP RLY LAMP REQUEST DK BLU WIRE DK BLU/WHT WIRE DOME LAMP DOME LAMP DEFEAT SWITCH DOME LAMP SWITCH GRY WIRE GRY/BLK WIRE HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES INADVERT RLY INADVERTANT POWER RELAY LEFT I/P COURTESY LAMP LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT MINI WEDGE (DOOR JAMB SWITCH) ORG/ WIRE PPL RIGHT I/P COURTESY LAMP RIGHT MINI WEDGE (DOOR JAMB SWITCH) TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UNDERHOOD LAMP ASSEMBLY OFF ON WHT WIRE

BLK WIRE BLU WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY JUNCTION BLOCK BODY RELAY (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) CARGO LAMP CARGO LP SW DOME LP SW DOME LP DFT CARGO/ FOG LAMP SWITCH CONSOLE COURTESY LAMP (SIERRA DENALI) COURTESY LAMP RELAY CTSY LP FUSE CTSY LP RLY LAMP REQUEST DK BLU WIRE DK BLU/WHT WIRE DOME LAMP DEFEAT SWITCH DOME LAMP SWITCH DRIVER DOOR COURTESY LAMP GAS DIESEL GRY WIRE GRY/BLK WIRE HEADLAMP DIMMER SWITCH HOT AT ALL TIMES I/P COMPART- MENT LAMP I/P JUNCTION BLOCK (ON LOWER RIGHT SIDE OF DASH) INADVERT RLY INADVERTENT POWER RELAY LEFT I/P COURTESY LAMP LEFT I/P FUSE BLOCK LEFT REAR DOOR COURTESY LAMP (CREW CAB) LEFT VANITY MIRROR LAMP OFF ON ORG/ WIRE OVERHEAD CONSOLE PPL READING LAMPS RIGHT FRONT DOOR COURTESY LAMP RIGHT I/P COURTESY LAMP RIGHT I/P FUSE BLOCK RIGHT REAR DOOR COURTESY LAMP (CREW CAB) RIGHT VANITY MIRROR LAMP TO BODY RELAY BLOCK (DIAGRAM 2 OF 2) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UNDERHOOD LAMP WHT WIRE

BLK/WHT WIRE BODY JUNCTION BLOCK BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE) CLASS 2 DATA LAMP VOLTAGE BATTERY VSS RAP VOLT DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER GROUND GRY WIRE HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) RADIO FUSE HOT IN RUN AND START HOT IN RUN, START OR W/ RAP ENERGIZED IGN 1 FUSE INSTRUMENT PANEL CLUSTER INTERIOR LIGHTS SYSTEM 8 340 LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) ORG/ WIRE PNK IGN 1 VOLT WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) PPL DATA LINK CONNECTOR (BELOW STEERING COLUMN) RDO 1 FUSE UNDERHOOD JUNCTION BLOCK VSS VSS OUT WHT WIRE YEL WIRE

AUTO HEAD BASE EXCEPT CREW CAB 3 BULBS UPLEVEL, CREW CAB CLEARANCE LAMPS BLK WIRE BLU WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) BODY RELAY BLOCK BODY RELAY BLOCK (LEFT SIDE OF DASH, NEAR KICK PANEL) BODY RELAY RIGHT FRONT MARKER LAMP BLOCK (LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOPLAMP (CHMSL) RIGHT FRONT PARK/ TURN LAMP CHMSL FUSE DK BLU WIRE DK DK DK GRN WIRE DRIVER OUTSIDE REAR- EMER- GENCY VEHICLE EMERGENCY VEHICLE ROOF LAMP RELAY (LEFT SIDE OF ENGINE COMPT) EXCEPT SIERRA EXT- ERIOR ILLUM- INATION LAMPS RELAY FRONT PASS- ENGER OUTSIDE REAR- VIEW MIRROR FUSE BLOCK (UNDER LEFT SIDE OF DASH) TURN FUSE GRN WIRE GRY WIRE HAZ LP FUSE HAZARD NORMAL HEADLAMP SWITCH HOT AT ALL TIMES HOT IN RUN OR START INT PRK FUSE LEFT FRONT MARKER LAMP LEFT FRONT PARK/ TURN LAMP LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TURN IND RIGHT TURN IND LEFT TURN IN PARK RLY CTRL EXT LMPS RLY LT (LEFT SIDE OF DASH) LEFT I/P FUSE BLOCK LT BLU WIRE LT DK LT LT LT PNK WIRE LT TURN FUSE FR PRK FUSE NCA WIRE ORG/ WIRE PARK PARK LAMP RELAY PARK LPS FUSE PNK WIRE PPL RED WIRE RIGHT I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT LEFT RIGHT TURN IN INT PRK LMPS ROOF BEACON PROVISION (LEFT "B" PILLAR) ROOF BEACON RELAY (LEFT "B" PILLAR) ROOF MARKER LAMPS UNDER- HOOD FUSE BLOCK RR PRK FUSE RT TURN FUSE SEO 1 FUSE SEO 2 FUSE STARTER POWER SOLENOID DIST- RIBUTION STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) STOP LPS FUSE TRAILER CIRCUIT TRAILER WIRING (BLUNT CUT) TURN SIGNAL/ MULTI-FUNCTION SWITCH TURN/HAZARD FLASHER UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT, NEAR BATTERY) VEH STOP FUSE LR PRK FUSE VIEW ROOF BEA- CON SWITCH MIRROR W/ ROOF BEACON PROVISIONS WHT WIRE YEL WIRE

AMBIENT LIGHT SENSOR (ON TOP CENTER OF DASH) BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRAKE SW SIG DRL RELAY BRN WIRE DAYTIME RUNNING LAMPS (DRL) RELAY DK BLU WIRE DK DK DK GRN/WHT WIRE DRL FUSE EXTERIOR LAMPS SYSTEM (PARK LAMP RELAY) FLASH TO PASS FOG LAMP RELAY FOG LAMP SWITCH FOG LP RELAY FTP IN HIGH BEAM FOG LP SW FTP IN AL SENS SIG AL SENS REF FOG LPS FUSE GASOLINE DIESEL GRN WIRE GRY WIRE HEAD HEADLAMP DIMMER SWITCH HEADLAMP RELAY HOT AT ALL TIMES HOT IN RUN OR START IGNE FUSE LEFT DAYTIME RUNNING LAMP RIGHT DAYTIME RUNNING LAMP LEFT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LT BLU WIRE LT GRN/BLK WIRE LT HDLP FUSE NCA WIRE ON INDICATOR ORG/ WIRE PARK AUTO PARK BRAKE SWITCH (PARK BRAKE ASSEMBLY) PICKUPS UTILITIES PPL PPL HIGH PPL PPL PPL/ PPL/ PPL/ RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HDLP FUSE SPLICE TBC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

1382 39 INTERIOR LIGHTS SYSTEM ABS IND. AIR BAG IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE) BODY WIRING RELAY BLOCK BRAKE IND BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL MODULE CRUISE FUSE CRUISE IND DATA LINES DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER ENG SPD SERIAL IGN 1 ENGINE OIL PRESSURE SENSOR EXTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM (DIESEL) FUEL GAUGE GAS GND VSS OIL PRESS GRY WIRE HIGH BEAM IND HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) RADIO FUSE HOT IN HOT IN OFF, RUN OR START HOT IN RUN AND START IGN IGN 1 FUSE IGN O FUSE IGNITON 1 OFF/RUN/ ILLUM PWR ILLUMINATION INSTRUMENT CLUSTER LED DIM LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT TURN IND LO WASHER FLUID LOGIC LOW WASH LT BLU WIRE MESSAGE CENTER NCA WIRE NOT USED NOT USED OIL GAUGE ORG/ WIRE PARK SW PARK SWITCH (PART OF THE PARK BRAKE ASSEMBLY) PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) PPL/WHT WIRE RADIO RIGHT TURN IND RUN WIRE SEAT BELT IND SERVICE ENGINE SOON IND SHIFT IND SPARE SPEEDOMETER TACH OUT TACHOMETER TAN/WHT WIRE TEMP GAUGE TRANS TEMP GAUGE TRIP ODOMETER HOUR METER UNDERHOOD FUSE BLOCK VOLTS GAUGE VSS OUT WAIT TO START WASHER FLUID LEVEL SWITCH (IN WASHER FLUID RESERVOIR) WHT WIRE

ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL THEFT DETERRENT MODULE (BELOW CONTROL STEERING MODULE COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND EGR INPUT SENS RTN TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK W/ REMOTE FUNCTION ACTUATOR W/O REMOTE FUNCTION ACTUATOR WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 2-3 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BODY RELAY BLOCK BRN WIRE BRN/RED WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE SOLENOID (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT SOLENOID (RIGHT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) GRY DK GRN WIRE GRY WIRE HOT IN RUN LEFT I/P FUSE BLOCK BRAKE FUSE HOT IN RUN, START LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE REV STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TCC PWM SOL TFT SENSOR UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE

ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL THEFT DETERRENT MODULE (BELOW CONTROL STEERING MODULE COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND EGR INPUT SENS RTN TAN WIRE UNDER- HOOD FUSE BLOCK W/ REMOTE FUNCTION ACTUATOR W/O REMOTE FUNCTION ACTUATOR WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 2-3 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BODY RELAY BLOCK BRAKE FUSE BRN WIRE BRN/RED WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE SOLENOID (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT SOLENOID (RIGHT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) GRY DK GRN WIRE GRY WIRE HOT IN RUN HOT IN RUN, START LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE REV STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TCC PWM SOL TFT SENSOR UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE