GMC Sonoma II (1994-2004) body control module (under dash, on heater case) Wiring diagrams

AMBIENT LIGHT SENSOR (ON TOP LEFT SIDE OF DASH) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM REMOTE KEYLESS ENTRY CIRCUIT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BRN WIRE COURTESY LAMP SW SIG FLASH-TO-PASS SW SIG CRUISE FUSE 3 DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DRL RELAY CTRL CLASS 2 SERIAL DATA SIGNAL GROUND IGNITION 1 VOLTAGE EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR PARK LAMPS SUPPLY VOLTAGE GAUGES FUSE 4 GMCM SERIAL DATA GROUND BATTERY POSITIVE VOLTAGE DOOR UNLOCK CTRL DOOR LOCK CTRL GRY WIRE GRY/BLK WIRE HEADLAMP HI BEAM RELAY CTRL HLP DIMMER SW HI BEAM SIG HEADLAMP OFF SIG HEADLAMP RELAY COIL SUPPLY VOLTAGE LED DIMMING SIGNAL VEHICLE SPEED SENSOR SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT WITH HEADLAMP SWITCH IN HEAD OR PARK I/P FUSE BLOCK (LEFT END OF DASH) I/P LAMP FUSE SUPPLY VOLTAGE AMBIENT LIGHT SENSOR SIG IGNITION KEY ALARM SWITCH (PART OF IGNITION SWITCH) INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM LEFT FRONT TURN SW SIG RIGHT FRONT TURN SW SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH (AT BASE OF PARK BRAKE ASSEMBLY) PARK LP FUSE 5 PNK WIRE PNK/BLK WIRE POWER DISTRI- BUTION SYSTEM (W/ REMOTE KEYLESS ENTRY) POWER DISTRIBUTION SYSTEM (RAP) INTERIOR LIGHTS SYSTEM HORNS SYSTEM PPL PPL/WHT WIRE RAP RELAY COIL CTRL INTERIOR LAMP RELAY COIL CTRL HORN RELAY CTRL RED/WHT WIRE SECURITY SYSTEM SENSOR SIG SPLICE PACK TAN WIRE TBC FUSE UNDERHOOD FUSE BLOCK WARNING SYTEMS TRANSMISSION SYSTEM WHT WIRE YEL WIRE

2.2L 4.3L 59 58 58 59 CLASS 2 CLASS 2 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (BEHIND LEFT SIDE OF DASH, NEAR I/P FUSE BLOCK) BRN/WHT WIRE CIGAR LTR FUSE 2 CLASS 2 DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DRIVER SEAT MEMORY MODULE (UNDER LEFT FRONT SEAT) (IF EQUIPPED) ELECTRONIC CLIMATE CONTROL MODULE (W/ AUTO A/C) GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LEFT END OF DASH) INSTRUMENT PANEL CLUSTER LT BLU WIRE LT GRN WIRE ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT FRONT OF ENGINE COMPARTMENT) PPL PPL 2 1 TRANSFER CASE SHIFT CONTROL MODULE UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) W/ TRIP COMPUTER W/ TWO SPEED ELECTRONIC CONTROL WHT WIRE YEL WIRE

BLK WIRE BLU WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (BEHIND LEFT SIDE OF DASH) BRN WIRE CENTER HIGH MOUNT STOP LAMP RIGHT REAR PARK/ TURN SIGNAL LAMP DK DK DK LT FR PRK FUSE FROM TR CHMSL (DIAGRAM 1 OF 1) GRN WIRE GRY WIRE HAZ LP FUSE HAZARD NORMAL HAZARD, TURN PWR HEADLAMP SWITCH HIGHT MOUNT STOP LAMP RELAY HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (LEFT SIDE OF DASH) TURN FUSE I/P FUSE BLOCK (LEFT SIDE OF DASH, LEFT FRONT MARKER LAMP LEFT FRONT PARK/ TURN SIGNAL LAMP LEFT REAR MARKER LAMP LEFT REAR PARK/ TURN SIGNAL LAMP LEFT TURN IN LEFT TURN IND RIGHT TURN IND LT BLU WIRE LT DK LT INSTRUMENT CLUSTER LT LT LT PNK WIRE LT TRN (REAR) FUSE LT TURN FUSE MULTI- FUNCTION SWITCH NCA WIRE OFF HEAD ORG/ WIRE OTHER PARK PARK LAMP RELAY PARK LP FUSE PNK WIRE PPL PPL FLSHR OUT PRK LP FUSE 18 RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/ TURN SIGNAL LAMP RIGHT LEFT RIGHT LICENSE LAMP RIGHT REAR MARKER LAMP LEFT LICENSE LAMP RIGHT TURN IN PARK RLY CTRL RR PRK FUSE LR PRK FUSE RT TRN (REAR) FUSE VEH CHMSL FUSE RT TURN FUSE STOP LP FUSE STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TO HIGH MOUNT STOP LAMP RELAY (DIAGRAM 1 OF 1) TR CHMSL FUSE TRAILER WIRING PROVISION UNDERHOOD FUSE BLOCK (TOP OF LEFT FRONT FENDER) W/O PWR LOCKS WHT WIRE YEL WIRE YEL/BLK WIRE

2 DOOR UTILITY PICKUP W/ PWR DOOR LOCKS 4 DOOR UTILITY 80 1303 727 (UTILITY) BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL DK BLU WIRE DK BLU/WHT WIRE DRIVER DOOR JAMB SWITCH DRIVER DOOR LOCK CYLINDER SWITCH FR HANDLE SW KEY SW SIG DRV DR SWITCH FRONT PASSENGER DOOR JAMB SWITCH FRONT PASSENGER DOOR LOCK CYLINDER SWITCH GROUND BATTERY SERIAL DATA GROUND HORN RELAY GRY WIRE HORNS SYSTEM HOT AT ALL TIMES IGNITION KEY ALARM SWITCH INSTRUMENT PANEL CLUSTER KEY IN IGN LIFTGATE SW DOOR SW SIG LEFT DOOR HANDLE SWITCH LEFT REAR SIDE DOOR JAMB SWITCH LT GRN WIRE ORG/ WIRE PICKUP PNK WIRE PNK/BLK WIRE PPL REAR WINDOW WIPER CUTOUT, LIFTGLASS AJAR JAMB SWITCH RIGHT DOOR HANDLE SWITCH RIGHT REAR SIDE DOOR JAMB SWITCH SECURITY INDICATOR SPLICE PACK TAN WIRE TBC FUSE UNDERHOOD FUSE BLOCK W/ PWR DOOR LOCKS W/O PWR DOOR LOCKS WHT WIRE

1356 705 278 192 FTP IN AMBIENT LIGHT SENSOR (TOP LEFT SIDE OF DASH) AUTO PKLP HDLP BATTERY FUSE BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (LEFT SIDE OF DASH) BRN WIRE DAYTIME RUNNING LAMPS RELAY DK BLU WIRE DK GRN/WHT WIRE FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE FOG LP IND ILLUM FTP GRN WIRE GRY WIRE HEADLAMP GROUNDING RELAY HEADLAMP POWER RELAY HEADLAMP SWITCH HIGH BEAM/ FLASH-TO- PASS SWITCH HOT AT ALL TIMES I/P FUSE BLOCK HDLP SW FUSE 7 LEFT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHT SENSOR FOG SW IN HEADLAMP CTRL LT BLU WIRE LT DK LT GRN/BLK WIRE LT HDLP FUSE MULTIFUNCTION SWITCH NCA WIRE ORG/ WIRE PARK BRAKE SW DRL RELAY CTRL PARK BRAKE SWITCH (BASE OF PARK BRAKE ASSEMBLY) PARK LAMP RELAY PARK LP FUSE PARK RLY CTRL FOG RLY CTRL HEADLAMP CTRL HIGH BEAM IN PPL PPL HIGH PPL PPL PPL/WHT WIRE RED WIRE RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HDLP FUSE SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (TOP OF LEFT FRONT FENDER) WHT WIRE YEL WIRE YEL/BLK WIRE

* - INFORMATION NOT AVAILABLE 1356 705 278 192 FTP IN 4.3L AMBIENT LIGHT SENSOR (TOP LEFT SIDE OF DASH) AUTO PARK HEAD BATTERY FUSE BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (LEFT SIDE OF DASH) BRN WIRE DK BLU WIRE DK GRN/WHT WIRE FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE FOG LP IND FTP GRY WIRE HEADLAMP POWER RELAY HEADLAMP SWITCH HIGH BEAM/ FLASH-TO- PASS SWITCH HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK HDLP SW FUSE 7 IGN E FUSE ILLUM LEFT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHT SENSOR FOG SW IN HEADLAMP CTRL LT BLU WIRE LT GRN/BLK WIRE LT HDLP FUSE MULTIFUNCTION SWITCH NCA WIRE ORG/ WIRE PARK BRAKE SW DRL RELAY CTRL PARK BRAKE SWITCH (BASE OF PARK BRAKE ASSEMBLY) PARK LAMP RELAY PARK LP FUSE PARK RLY CTRL FOG RLY CTRL HEADLAMP CTRL HIGH BEAM IN PNK WIRE PPL PPL HIGH PPL PPL PPL/WHT WIRE RED WIRE RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HDLP FUSE SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (TOP OF LEFT FRONT FENDER) WHT WIRE YEL WIRE YEL/BLK WIRE

7 8 9 10 11 12 FUSED IGN GROUND VSS IN AIR TEMP INT LITE DIM PARKLAMPS AIR BAG IND ANTI-LOCK IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (BEHIND LEFT SIDE OF DASH, NEAR I/P FUSE BLOCK) BRAKE IND BRN WIRE BRN/WHT WIRE CHARGE IND CHECK GAUGES IND CLR IC LOGIC CLSTR FUSE 11 COOLANT TEMPERATURE CRUISE FUSE 3 CTSY LAMP FUSE 8 DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER MODULE (IN FRONT OVERHEAD CONSOLE) ENG SPD VSS IGN 3 SERIAL DATA EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FUEL FUSED BATT SERIAL DATA GAUGES FUSE 4 GRN WIRE GROUND PARK SW BATT GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN ACCY, RUN OR RAP HOT IN RUN HOT IN RUN OR START HOT IN RUN, BULB TEST OR START HOT W/HEADLAMP SW IN PARK OR HEAD I/P FUSE BLOCK (LEFT END OF DASH) IGN 1 OFF/RUN ILLUM FUSE 12 ILLUMINATION (6 BULB) INSTRUMENT CLUSTER LEFT TURN LOW FUEL LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MIL (SERVICE ENGINE SOON IND) ODOMETER DISPLAY OIL ORG/ WIRE ORG/BLK WIRE OVER SPEED ALARM IND P R N D 3 2 1 PARK SWITCH (IN STEERING COLUMN) PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL/WHT WIRE RDO BATT FUSE 19 RDO IGN FUSE 24 RED WIRE RIGHT TURN SEAT BELT IND SECURITY IND SERVICE SPARE SPEEDOMETER SPLICE SPLICE PACK TACHOMETER TAIL GATE ALARM IND TAN/WHT WIRE TRANSFER CASE SHIFT CONTROL MODULE (BEHIND RIGHT FRONT KICK PANEL) TRIP RESET UPSHIFT IND VOLT W/ TRIP COMPUTER WHT WIRE YEL WIRE

1850 1140 GROUND BATTERY SERIAL DATA GROUND SENSOR PWR 2.2L 4.3L 710 1057 SERIAL DATA SENSOR RET SENSOR SIG BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM (FUEL PUMP RELAY) HOT AT ALL TIMES LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR (AT IGNITION SWITCH) POWERTRAIN CONTROL MODULE (ON RIGHT FRONT OF ENGINE COMPT) PPL RED WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND LOWER LEFT SIDE OF DASH) SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) W/ REMOTE KEYLESS ENTRY WHT WIRE YEL WIRE

14 15 16 PPL 20 21 PNK WIRE 6 7 PNK WIRE 8 9 PNK WIRE A/C PRES ABS FUSE 22 ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM PPL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BRN WIRE BRN/WHT WIRE CLSTR FUSE 11 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM I FUSE ECM-B FUSE ECT SENSOR FUEL LEVEL IN PPL FUEL PUMP FUEL PUMP RELAY FUEL PUMP/ SENDER FUEL PUMP/ SENDER (TOP OF FUEL TANK) FUEL TANK PRES CMP SENS CKP REF FUEL TANK PRES TFT SENSOR GENERATOR ANTI-LOCK BRAKES SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN OFF, RUN OR START HOT IN RUN I/P FUSE BLOCK HOT IN RUN OR START IGN CTRL 2-3 IGN CTRL 1-4 KNOCK SENSOR (LOWER RIGHT SIDE OF ENG) KS SIGNAL LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION, BACK-UP LAMP SWITCH (LEFT SIDE OF TRANSMISSION) PCM GND IGN BATTERY TP SENSOR PNK WIRE PNK 12 13 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (RIGHT FRONT OF ENGINE COMPARTMENT) PPL PPL PPL CRUISE CONTROL SYSTEM PPL TCC/CLUTCH SW A/C REQ SIG PPL/WHT WIRE RED WIRE RED/BLK WIRE THROTTLE POSITION SENSOR (ON THROTTLE BODY) TP SENSOR CLASS 2 SERIAL DATA II PCM GROUND IGN IN MAP SENSOR VSS HIGH TX RANGE C PRNDL "A" UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

A/C SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B FUSE ENG SPD FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY (ON TOP OF FUEL TANK) FUEL TANK PRESSURE SENSOR (TOP OF FUEL TANK) GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM INTAKE AIR TEMPERATURE SENSOR (IN FRESH AIR INTAKE DUCT) LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE MAF SIG MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP CENTER OF ENGINE) MASS AIRFLOW SENSOR (MAF) (ON AIR INTAKE ASSY) MIL INPUT ORG/ WIRE PICK-UP PICK-UP UTILITY PNK 25 26 27 28 WIRE PNK PNK PNK 1 2 3 4 5 6 WIRE PNK PNK WIRE PNK WIRE PPL RED WIRE RED/BLK WIRE SPLICE PACK 201 (LEFT SIDE OF DASH) SPLICE PACK 422/423 (REAR FRAME RAIL) TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) UNDERHOOD FUSE BLOCK UTILITY UTILITY PICK-UP WHT WIRE YEL WIRE YEL/BLK WIRE