GMC Sierra 2500 (2000-2004) lt grn Wiring diagrams

AMBIENT LIGHT SENSOR (TOP CENTER OF DASH) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (NEAR LEFT KICK PANEL) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRN WIRE CARGO LP SW INPUT INTERIOR LAMP CTRL FLASH TO PASS SW SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LATCH SW SIG COURTESY LAMP PWR DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DRIVER DOOR KEY SW SIG LF DR OPEN SW SIG FRONT FOG LP SW INT LP DEFEAT SW SIG DRL RLY COIL CLASS 2 DATA GROUND IGN 1 EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM FOG LP RLY CTRL EXTERIOR COURTESY LPS RLY CTRL GROUND BATTERY DOOR UNLOCK CTRL DOOR LOCK CTRL GRY WIRE GRY/BLK WIRE HEADLAMP SW INPUT LED DIM SIG VSS HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM HOT AT ALL TIMES TBC FUSE HOT IN RUN CRUISE FUSE HOT IN RUN, START IGN 1 FUSE IGN 3 PRK BK SW SIG LT SEAT BELT SW TOW/HAUL SW SIG IGNITION KEY ALARM SWITCH INST PANEL LP PWR AMBIENT LIGHT SEN SIG INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM KEY IN IGN SW SIG LEFT I/P FUSE BLOCK LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT TURN SIG LAMP PWR RT TURN SIG LAMP PWR NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (RAP) INTERIOR LIGHTS SYSTEM HORNS SYSTEM PPL PPL HIGH BEAM INPUT INTERIOR PARK LP PWR PPL/WHT WIRE RAP RELAY CTRL INADVERTENT PWR RLY CTRL HORN RLY CTRL RED/WHT WIRE SECURITY SYSTEM SEN SIG SERIAL DATA TAN WIRE TOW/HAUL SWITCH UNDERHOOD JUNCTION BLOCK WARNING SYSTEM WHT WIRE YEL WIRE

3 2 PPL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BRN/WHT WIRE CIGAR FUSE DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND CENTER OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDERSODE OF DRIVER SEAT) 15 14 13 12 11 10 9 8 7 6 NEAR KICK PANEL) ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) SPLICE PACK TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLAMP SWITCH) TRANSMISSION CONTROL MODULE (AT LEFT FRONT OF ENG COMPT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEHICLE INTERFACE UNIT (BEHIND RIGHT SIDE OF DASH) WHT WIRE YEL WIRE

1995 VFTC ANTI-THEFT SYSTEM BATTERY IGNITION IGNITION GROUND GROUND EVO LOW EVO HIGH SERIAL DATA 5 VOLT REF BLK WIRE BLU WIRE BODY CONTROL MODULE (IN CENTER CONSOLE) BODY WIRING HARNESS JUNCTION BLOCK (UNDER LEFT BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE FUSE ENGINE COMPT, NEAR BATTERY) ENGINE WIRING HARNESS JUNCTION BLOCK (LEFT SIDE OF EVO ACTUATOR (PART OF POWER STEERING PUMP) GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) IGN 1 FUSE LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE SIDE OF DASH) SIGNAL RETURN STEERING HANDWHEEL POSITION/SPEED SENSOR (ON STEERING COLUMN, NEAR FIREWALL) TBC FUSE WHT WIRE

5 20 22 DOOR AJAR SW SIG DOOR SW LO REF SERIAL DATA AJAR SW BASE BATTERY PK LAMP REL HEADLIGHTS CTRL GROUND HORN RLY CTRL SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE DK BLU WIRE DK GRN WIRE DRIVER DOOR MODULE DRIVER MINI-WEDGE DOOR JAMB SWITCH (REAR OF DRIVER'S DOOR) EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM FRONT PASSENGER DOOR MODULE FRONT PASSENGER MINI-WEDGE DOOR JAMB SWITCH (REAR OF RIGHT FRONT DOOR) GROUND GRY/BLK WIRE HORNS SYSTEM HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSIDE DRIVER DOOR) KEY SW LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR MINI-WEDGE DOOR JAMB SWITCH (CREW CAB) (REAR OR LEFT REAR DOOR) LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE RF DOOR AJAR SW LF DOOR AJAR SW RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR MINI-WEDGE DOOR JAMB SWITCH (CREW CAB) (REAR OR RIGHT REAR DOOR) RR DOOR AJAR SW LR DOOR AJAR SW SPLICE PACK TAN WIRE TBC BATT FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) WHT WIRE

58 59 15 16 DATA DATA BATTERY GROUND LOW REFERENCE SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, NEAR STEERING COLUMN) CLASS 2 SERIAL DATA DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL DK GRN WIRE EXCEPT 6.6L VIN 2 6.6L VIN 2 GRY WIRE HOT AT ALL TIMES HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN IGN SW SIG IGN 1 VOLTAGE PNK WIRE IGNITION KEY ALARM SWITCH (ON IGNITION KEY CYLINDER) INSTRUMENT PANEL CLUSTER KEY LT GRN WIRE MAGNET LOCK CYLINDER ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR (INTERNAL TO STEERING COLUMN) PNK WIRE PPL RED/WHT WIRE SEC SENS SIG SERIAL DATA GROUND SECURITY INDICATOR SECURITY SENSOR SPLICE PACK TAMPER SENSOR TBC BATT FUSE TBC IGN 1 FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) YEL WIRE

1 2 3 4 5 6 PNK WIRE 3-2 SS SENS RTN ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE BLOCK IGN 0 FUSE FUSE FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG 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 7 8 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 CLUTCH SW PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND SENS GND EGR INPUT TAN WIRE TAN/WHT WIRE UNDERHOOD JUNCTION BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 PNK WIRE 2 3 4 PPL AIR MAXI FUSE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM-B FUSE ENGINE COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) ENGINE COOLANT TEMPERATURE SENSOR (LEFT FRONT OF CYLINDER HEAD) ENGINE OIL LEVEL SWITCH (RIGHT SIDE OF OIL PAN) FUEL PUMP RELAY FUEL PUMP/ LEVEL SENSOR (IN FUEL TANK) GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (LEFT EXH PIPE, BEFORE CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (RIGHT EXH PIPE, AFTER CONVERTER) HOT AT ALL TIMES HOT IN RUN, START IGN E FUSE KNOCK SENSOR 1 (UNDER INTAKE MANIFOLD) KNOCK SENSOR 2 (UNDER INTAKE MANIFOLD) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK PPL 7 8 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 5 6 PPL PNK PNK 16 17 18 WIRE PPL PPL PPL/WHT WIRE RED WIRE SECONDARY AIR INJECTION REACTION PUMP (RIGHT REAR OF ENGINE COMPT) SECONDARY AIR INJECTION REACTION RELAY (RIGHT REAR OF ENGINE COMPARTMENT) SECONDARY AIR INJECTION REACTION SOLENOID (RIGHT REAR OF ENGINE COMPT) TAN WIRE TAN/WHT WIRE UNDER- HOOD JUNCTION BLOCK WHT WIRE WHT/ BLK WIRE YEL WIRE

1-2 SOL 2 3 4 PPL 2-3 SOL 28 29 30 PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BODY JUNCTION BLOCK BRAKE FUSE BRN WIRE BRN/RED WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE VALVE (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT VALVE (LEFT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) FUSE BLOCK GRY DK GRN WIRE GRY WIRE HOT IN RUN HOT IN RUN, START LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL 5 6 PPL PNK PNK 16 17 18 WIRE PPL PNK PNK 25 26 27 WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE REV STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TAN/BLK WIRE TCC PWM SOL TCC SOL TFT SENSOR VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VSS ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE 28 29 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE 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 FUSE BLOCK GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 24 25 26 27 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE TP SENS 1 TP SENS 2 UNDERHOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE A/C REQ A/C SYSTEM AIR PUMP ANTI-LOCK BRAKE SYSTEM ANTI-LOCK BRAKE SYSTEM (SPEED SIGNAL) AUTOMATIC TRANSFER CASE CONTROL MODULE (ABOVE HEADLIGHT SWITCH) 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 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 FRONT AXLE SWITCH (RIGHT SIDE OF CENTER ON AXLE HOUSING) FRT AXLE SW VSS LOW VSS HIGH FUSE FUSE BLOCK 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 TCC SOL A/C CLU IGNITION COILS INSTRUMENT CLUSTER SYSTEMS (SPEED SIGNAL) INSTRUMENT PANEL CLUSTER MALFUNCTION INDICATOR LAMP 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 PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL FUEL LEV CYC SW IN PPL PNK PNK 24 25 26 27 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 SENS GND SPARK PLUG SPARK PLUG SPARK PLUG STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TP SIG IAT SIG IGN CTRL IGN CTRL IGN CTRL IGN CTRL TRANSFER CASE SWITCH (LEFT FRONT OF TRANSAXLE CASE) UNDER- HOOD JUNCTION BLOCK W/ ATC WHT WIRE YEL WIRE YEL/BLK WIRE