GMC Sierra 2500 (2000-2004) yel Wiring diagrams

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

ACTIVE, ELECT SHIFT TRANSFER CASE ACTIVE, MANUAL SHIFT TRANSFER CASE BLK WIRE BLK/WHT WIRE CREW CAB CREW CAB CREW CAB DIESEL ELECTRONIC BRAKE CONTROL MODULE ENGINE OIL LEVEL SWITCH EXC 8.1L W/O CALIF LEV EXCEPT CREW CAB FRONT AXLE ACTUATOR FUEL HEATER SENSOR FUEL INJECTOR CONTROL MODULE FUEL PUMP FUEL PUMP, SENDER ASSEMBLY (SECONDARY) GAS GLOW PLUG RELAY GRN WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INTAKE AIR TEMPERATURE (IAT)/MASS AIRFLOW (MAF) SENSOR LT GRN WIRE MANUAL SHIFT TRANSFER CASE MEMORY SEAT WINDOW MODULE SWITCH) (DRIVER) (LEFT REAR) MINI WEDGE (DOOR JAMB SWITCH) (LEFT REAR) MINI WEDGE REAR (DOOR JAMB WINDOW SWITCH) DEFOGGER (RIGHT REAR) GRID NCA WIRE PARK/ NEUTRAL POSITION SWITCH PNK WIRE POWERTRAIN CONTROL MODULE REAR WHEEL STEERING CONTROL MODULE SEAT ADJUSTER SWITCH (PASSENGER) SEAT BOLSTER/ LUMBAR SWITCH (PASSENGER) TRANSFER CASE SHIFT CONTROL MOTOR TRANSFER CASE SHIFT CONTROL SWITCH WATER IN-FUEL SENSOR WHT WIRE WINDOW MEMORY SWITCH SEAT (RIGHT MODULE REAR) (DRIVER) YEL WIRE

A/T SHIFT LOCK BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE BTSI FUSE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER DRIVER SEAT SEAT FRONT HORIZONTAL VERTICAL POSITION MOTOR SENSOR DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL POSITION SENSOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT REAR VERTICAL POSITION SENSOR DRIVER SEAT RECLINER MOTOR DRIVER SEAT RECLINER MOTOR POSITION SENSOR DRIVER WINDOW/ DOOR LOCK SWITCH FRONT VERT DN FRONT VERT UP FRT DN FRT UP FT VERT DN CTRL FT VERT POS SEN FT VERT UP CTRL GROUND GRY/BLK WIRE HALL EFFECT SENSOR HOR FWD HOR RWD HORIZ FWD HORIZ FWD CTRL HORIZ POS SEN HORIZ RWD HORIZ RWD CTRL HOT AT ALL TIMES HOT IN PARK IGN 3 FUSE IGN 3 VOLT LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MEMORY 1 SW PPL MEMORY 2 SW MEMORY SEAT MODULE (UNDERSIDE OF DRIVER'S SEAT) MEMORY SET SW MEMORY/HEATED SEAT SWITCH MIR/LOCK FUSE NCA WIRE NOT USED ORG/ WIRE PPL RCL 1 RCL 2 REAR DN REAR UP REAR VERT DN REAR VERT UP RECL FWD RECL RWD RECLINE FWD RECLINE FWD CTRL RECLINE POS SEN RECLINE RWD RECLINE RWD CTRL RED WIRE RR VERT DN CTRL RR VERT POS SEN RR VERT UP CTRL SEATS CIRCUIT BREAKER SENSOR GROUND SET- SHIFT INTERLOCK SYSTEM SUPPLY VOLT TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT, NEAR BATTERY) WHT WIRE YEL WIRE

BACK BLK WIRE DK BLU WIRE DK GRN WIRE FR DN FR UP FWD FRONT PASSENGER SEAT ADJUSTER SWITCH FRONT PASSENGER SEAT FRONT VERTICAL MOTOR FRONT PASSENGER SEAT HORIZONTAL MOTOR FRONT PASSENGER SEAT REAR RECLINER MOTOR FRONT PASSENGER SEAT REAR VERTICAL MOTOR HOT AT ALL TIMES I/P RELAY BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE RED WIRE RR DN RR UP SEATS CIRCUIT BREAKER TAN WIRE YEL WIRE

4 5 RF + GROUND 6 7 8 9 10 DIMMER I/P LAMP ANTENNA BLK WIRE BRN WIRE DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT WITH RAP RELAY ENERGIZED IGNITION BATTERY LEFT FRONT DOOR SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR SPEAKER LF+ LR (-) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE RADIO RADIO FUSE RDO I FUSE RF+ RIGHT FRONT DOOR SPEAKER RIGHT REAR SPEAKER RR (-) TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) YEL WIRE

4 5 RF + GROUND 6 7 8 9 10 DIMMER I/P LAMP ANTENNA BLK WIRE BODY RELAY BLOCK BRN WIRE DATA LINK CONNECTOR DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT WITH RAP RELAY ENERGIZED IGNITION BATTERY LEFT FRONT DOOR SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER LF+ LR (-) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE RADIO RADIO FUSE RDO I FUSE RF+ RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER RR (-) SERIAL DATA TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) YEL 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

ACT CNTRL APP SENS 1 APP SENS 2 APP SENS 3 BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUSE GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR INTAKE AIR TEMPERATURE/ MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) IGN LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 2 GRD SENS 3 GRD SENS GRD SIGNAL STP LP IN TAN WIRE THROTTLE POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) (ON THROTTLE BODY) TP SENS 1 TP SENS 2 UNDERHOOD FUSE BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 PNK PNK WIRE 29 30 31 PNK WIRE A/C CLU A/C REQ A/C SYSTEM A/C SYSTEM 1310 419 1223 1222 1827 ANTI-LOCK BRAKE SYSTEM ANTI-LOCK BRAKE SYSTEM (SPEED SIGNAL) AUTOMATIC TRANS- MISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/ GRY WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM CRUISE ENG CTRL DELIVERED TORQ PC SOL HI EGR CTRL PC SOL LO FUEL PMP RPM OUT RECIRC SW DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP VENT MIL CTRL 2-3 SS 1-2 SS VSS OUT VSS OUT TFT SENS SIG GEN F FUSE GEN L GRY WIRE GRY/BLK WIRE HOT IN RUN, START IAC COIL HI IAC COIL LO IAC COIL LO IAC COIL HI IDLE AIR CONTROL VALVE (TOP OF THROTTLE BODY) IGN IGN CTRL IGN CTRL IGN CTRL IGN CTRL IGN FEED GND EGR GND IGNITION COILS INSTRUMENT CLUSTER SYSTEMS (SPEED SIGNAL) INSTRUMENT PANEL CLUSTER MALFUNCTION INDICATOR LAMP LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAF SIG MAP SIG RECIRC DOOR EVAP CANP NCA WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL FUEL LEV CYC SW IN PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE REF LO REF LOW REF LOW PRND C TRANS RNG A FUEL SIG CTRL RPM OUT SEC FUEL LVL SENS GND SPARK PLUG SPARK SPARK PLUG PLUG STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TP SIG IAT SIG IGN CTRL IGN CTRL IGN CTRL IGN CTRL TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLIGHT SWITCH) UNDERHOOD FUSE BLOCK VSS LOW VSS HIGH WHT WIRE YEL WIRE YEL/BLK WIRE