GMC Envoy I (1997-2000) underhood bussed electrical center Wiring diagrams

2.2L 4.3L ABS MAXI- FUSE ANTI-LOCK INDICATOR BLK WIRE BLK/WHT WIRE BRAKE PRESSURE WARNING SWITCH (RIGHT END OF EBCM) BRAKE SW BRAKE WARNING INDICATOR BRN WIRE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT FRONT INNER FENDER) FRONT AXLE SWITCH (ON FRONT AXLE) FUSE 15 GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN ABS FUSE 22 I/C LOGIC I/P FUSE BLOCK IGN INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LFT FRT SENSOR (-) LT BLU WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE POWERTRAIN CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) PPL PPL BRAKE SW INPUT PPL PPL PPL/WHT WIRE PUMP MOTOR POWER GROUND RDO BATT FUSE 19 RED WIRE RIGHT FRONT WHEEL SPEED SENSOR RT FRT SENSOR (-) LFT FRT SENSOR (+) RT FRT SENSOR (+) SERIAL DATA LINE BRAKE LAMP CONTROL EBCM GROUND PPL SPLICE PACK STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAN WIRE UNDERHOOD BUSSED ELECTRICAL CENTER VEHICLE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) VEHICLE SPEED SENSOR (ON TRANSMISSION) VOLTAGE REG VSS VSS INPUT YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE FUSE 3 GRD BATTERY SERIAL DATA GRD SENSOR PWR IGNITION HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR (AT IGNITION SWITCH) RED WIRE RED/WHT WIRE SENSOR RET SENSOR DATA SPLICE PACK TBC FUSE TRUCK BODY CONTROL MODULE (BEHIND DASH, ON HEATER) UNDERHOOD BUSSED ELECTRICAL CENTER WHT WIRE YEL WIRE

2.2L 4.3L A/T M/T ABS FUSE 20 BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 12 BRN WIRE BRN/WHT (OR PPL) WIRE BRN/WHT WIRE CLUTCH PEDAL POSITION SWITCH (CLUTCH PEDAL SUPPORT) CRUISE CONTROL MODULE CRUISE STATUS CRUISE STATUS VEHICLE SPEED INPUT CRUISE SWITCH DK BLU WIRE DK GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE M/T NCA WIRE OFF OFF ON ORG/ WIRE POWERTRAIN CONTROL MODULE (RIGHT SIDE OF ENGINE COMPT) PPL PPL A/T PPL/WHT WIRE R/A SET SW STOP LP FUSE 40 STOPLAMP SWITCH (BRAKE PEDAL SUPPORT) UNDERHOOD BUSSED ELECTRICAL CENTER VEHICLE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) VSS VSS RETURN VSS SIGNAL WHT WIRE

2.2L MFI 2.2L MFI 2.2L MFI 2.2L MFI ONLY 4.3L CPI A/C COMPRESSOR PRESSURE CYCLING SWITCH A/C RELAY DIODE BARE BATTERY BLK WIRE BODY BUSSED ELECTRICAL CENTER BRAKE PRESSURE WARNING SWITCH CRUISE CONTROL MODULE DATA LINK CONNECTOR ELECTRONIC BRAKE CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE TRIP CONSOLE TEMPERATURE SENSOR FUEL PUMP RELAY HEADLAMPS PWR/GRND/ DRL RELAY STARTER RELAY HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR BREAKOUT) INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE INSTRUMENT CLUSTER LEFT FOG LAMP LEFT FRONT INFLATABLE RESTRAINT DISCRIMINATING SENSOR LEFT FRONT PARK/ TURN LAMP LEFT HORN LINEAR EGR VALVE MASS AIR FLOW SENSOR ELECTRONIC IGNITION CONTROL MODULE NCA WIRE OXYGEN SENSOR PCM REAR WINDOW WIPER/ WASHER PUMP MOTOR REMOTE KEYLESS ENTRY MODULE RIGHT FOG LAMP RIGHT FRONT PARK/ TURN LAMP RIGHT HORN TRANSFER CASE CONTROL MODULE TRIP OR COMPASS/ TEMP CONSOLE TRANSMISSION RANGE SWITCH UNDERHOOD BUSSED ELECTRICAL CENTER UNDERHOOD BUSSED ELECTRICAL CENTER CHMSL RELAY (2.2L MFI) VCM/ PCM VSS SHIELD VSS SHIELD 2.2L MFI W/O PCM WHT WIRE WINDSHIELD WIPER/ WASHER PUMP MOTOR

AUTO BLK WIRE BODY BUSSED ELECTRICAL CENTER DIODE DK BLU WIRE DK GRN/WHT WIRE DRL RELAY FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE 28 FOG LP IND ILLUM GRN WIRE GRN/BLK WIRE GRY WIRE HDLP PKLP HEADLAMP RELAY (GROUND) HEADLAMP RELAY (POWER) HEADLAMP SWITCH HOT AT ALL TIMES I/P FUSE BLOCK HDLP SW FUSE 1 LEFT FOG LAMP LEFT HEADLAMP HIGH BEAM LEFT HEADLAMP LOW BEAM LO HI LT BLU WIRE LT HDLP FUSE 19 MEGA FUSE MULTIFUNCTION SWITCH NCA WIRE ORG/ WIRE PARK LAMP RELAY PARK LP FUSE 34 PPL PPL PPL RED WIRE RIGHT FOG LAMP RIGHT HEADLAMP HIGH BEAM RIGHT HEADLAMP LOW BEAM RT HDLP FUSE 20 TRUCK BODY CONTROL MODULE (LOWER REAR OF DASH) UNDERHOOD BUSSED ELECTRICAL CENTER WHT WIRE YEL WIRE

4.3L BATTERY BATTERY MEGA FUSE BLK WIRE BRN WIRE CAMSHAFT POSITION SENSOR (4.3L) CENTRAL SEQUENTIAL FUEL INJECTION (4.3L) CRANKSHAFT POSITION SENSOR ECM 1 FUSE 15 ELECTRONIC IGNITION CONTROL MODULE ENG 1 FUSE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE EVAPORATIVE EMISSION CANISTER VENT SOLENOID VALVE MASS AIR FLOW SENSOR (4.3L) FROM ECM 1 FUSE DIAGRAM 1 OF 5) FUEL INJECTORS FUSIBLE LINK GAUGES FUSE 4 GENERATOR HAZARD SWITCH (SPORT SIDE PICKUP) I/P FUSE BLOCK IGN A FUSE TO ENG 1 FUSE (DIAGRAM 1 OF 5) IGNITION COIL IGNITION SWITCH LEFT FRONT HEATED OXYGEN SENSOR (4.3L) LOCK OFF OXYGEN FUSE PICKUP PNK PNK WIRE PNK WIRE POST CONVERTER HEATED OXYGEN SENSOR (4.3L) POWERTRAIN CONTROL MODULE (2.2L) RED WIRE RIGHT FRONT HEATED OXYGEN SENSOR (4.3L) RUN WIRE SIR FUSE 16 STARTER TO B/U LP FUSE (DIAGRAM 2 OF 5) TO IGN C FUSE (DIAGRAM 2 OF 5) TRUCK BODY CONTROL MODULE INSTRUMENT CLUSTER TURN FUSE 10 UNDERHOOD BUSSED ELECTRICAL CENTER UNDERHOOD BUSSED ELECTRICAL CENTER STARTER RELAY VEHICLE CONTROL MODULE (4.3L) YEL WIRE

4 DOOR A/C COMPRESSOR CLUTCH RELAY A/T A/T CONTROLS (FLOOR SHIFT) ABS FUSE B/U LP FUSE 25 BACK-UP LAMP SWITCH BLK WIRE BLOWER MOTOR RELAY PULSE WIDTH MODULATING DRIVE MOTOR BODY BUSSED ELECTRICAL CENTER BRN WIRE BTSI FUSE ELECTRONIC BRAKE CONTROL MODULE ASSEMBLY FROM B/U LP FUSE DIAGRAM 2 OF 5) FROM IGN A FUSE DIAGRAM 1 OF 5) FROM OXYGEN FUSE DIAGRAM 1 OF 5) GRN WIRE GRY WIRE HAZARD SWITCH (SPORT SIDE PICKUP) HEADLAMP SWITCH HVAC FUSE IGN B MAXI FUSE IGN C FUSE IGN E FUSE 27 IGNITION SWITCH LEFT BACK-UP LAMP (PICKUP) LEFT BACK-UP LAMP (UTILITY) LOCK LOCK OFF OFF LOCK OFF LT GRN WIRE LT LT M/T ORG/ WIRE PARK LAMP RELAY PICKUP PNK WIRE PRK LP FUSE REAR DEFOGGER RELAY RED WIRE RIGHT BACK-UP LAMP (UTILITY) RIGHT BACK-UP LAMP AUTOMATIC DAY/ NIGHT MIRROR (UTILITY) RUN WIRE STOP LAMP SWITCH STUD 2 MAXI FUSE HAZ LP FUSE TO CLSTR FUSE (DIAGRAM 4 OF 5) TO CRANK FUSE (DIAGRAM 4 OF 5) TO IGN E FUSE (DIAGRAM 2 OF 5) TO RAP MAXI FUSE (DIAGRAM 3 OF 5) TO RAP RELAY (DIAGRAM 5 OF 5) TO TRAILER WIRING PROVISIONS TRAILER WIRING PROVISIONS (UTILITY W/ M/T) TRANSFER CASE CONTROL MODULE TRANSMISSION RANGE SWITCH TRL B/U FUSE UNDERHOOD BUSSED ELECTRICAL CENTER UTILITY VEH B/U FUSE W/O CLIMATE CONTROL W/ CLIMATE CONTROL WHT WIRE YEL WIRE

2.2L 4 DOOR 4.3L AM/FM STEREO RADIO AM/FM STEREO RADIO (W/ ATC CD) AUX PWR FUSE 13 AUXILIARY POWER TRAY BLK WIRE BODY BUSSED ELECTRICAL CENTER (LEFT SIDE OF DASH) CARGO LAMP (UTILITY) CIGAR LIGHTER CIGAR LTR FUSE 2 CTSY LP FUSE 8 DATA LINK CONNECTOR DOME AND CENTER MOUNTED STOP LAMP DOME LAMP DOME LAMP (W/O SUNROOF) TRIP COMPUTER UNIVERSAL GARAGE DOOR OPENER DOOR UNLOCK RELAY DOOR LOCK RELAY LEFT DOOR UNLOCK RELAY ELECTRONIC CLIMATE CONTROL MODULE ENDGATE LOCK CYLINDER (UTILITY) EXCEPT BRAVADA FOG LP FUSE FROM ABS FUSE (DIAGRAM 2 OF 5) FROM INT BAT FUSE (DIAGRAM 3 OF 5) FUEL PUMP RELAY ECM B FUSE FUEL PUMP SWITCH AND ENGINE OIL PRESSURE GAUGE SENSOR HDLP SW FUSE 1 HEADLAMP GROUNDING RELAY FOG LAMP RELAY HEADLAMP SWITCH HEADLAMP SWITCH BREAKOUT) I/P FUSE BLOCK INADVERTENT POWER LAMP RELAY INSTRUMENT CLUSTER INT BAT FUSE LEFT AUXILIARY POWER OUTLET LEFT DOOR LOCK AND WINDOW SWITCH LEFT FRONT CONSOLE COURTESY LAMP LEFT SEAT LEFT SEAT ADJUSTER SWITCH LEFT SEAT BACK LUMBAR SUPPORT SWITCH LIFTGATE OR ENDGATE LIFTGLASS RELAY MIR/LCKS FUSE 7 ORG/ WIRE OUTSIDE REAR VIEW MIRROR SWITCH PICKUP POWER SEATS CIRCUIT BREAKER POWERTRAIN CONTROL MODULE PWR LCKS FUSE 14 (NOT USED) RAP MAXI FUSE RDO BAT FUSE 19 RED WIRE RIGHT AUXILIARY POWER OUTLET RIGHT DOOR LOCK AND WINDOW SWITCH RIGHT FRONT CONSOLE COURTESY LAMP RIGHT SEAT BACK LUMBAR SUPPORT RIGHT SEATBACK LUMBAR SUPPORT SWITCH TO ECM B FUSE (DIAGRAM 3 OF 5) TO PWR LCKS FUSE 14 (DIAGRAM 3 OF 5) TO RAP RELAY (DIAGRAM 5 OF 5) TO TBC FUSE (DIAGRAM 4 OF 5) TRANSFER CASE CONTROL MODULE (W/ ELECTRIC TRIP SHORT CONSOLE OR TRIP CONSOLE UNDERHOOD BUSSED ELECTRICAL CENTER UTILITY UTILITY W/O TRIP CONSOLE VEHICLE CONTROL MODULE

2.2L 4.3L A/C COMPRESSOR CLUTCH RELAY A/C FUSE ATC FUSE AUTOMATIC TRANSMISSION CONTROLS (W/ FLOOR SHIFT) AUTOMATIC TRANSMISSION BLK WIRE BLU WIRE CENTER HIGH MOUNTED STOP LAMP RELAY (PICKUP) CENTER HIGH MOUNTED STOP- LAMP RESISTOR CHMSL BREAKOUT) LT CHMSL/ CARGO LAMP CLSTR FUSE 11 CRANK FUSE CRUISE CONTROL MODULE DAYTIME RUNNING LIGHTS RELAY DK DK DOME AND CENTER HIGH MOUNTED STOPLAMP ESTC FROM ATC FUSE (DIAGRAM 4 OF 5) FROM ECM B FUSE (DIAGRAM 3 OF 5) FROM IGNITION SWITCH GRN WIRE HAZARD SWITCH (UTILITY) HEADLAMP POWER RELAY HORN FUSE HORN RELAY HORN SWITCH HTD/SEAT FUSE HTDMIR FUSE RR DEFOG FUSE I/P FUSE BLOCK INSTRUMENT CLUSTER LEFT HEADLAMP LOW BEAM BULB RIGHT HEADLAMP LOW BEAM BULB LEFT HEATED SEAT (UTILITY) LEFT HORN HIGH A NOTE RIGHT HORN LOW F NOTE LEFT OUTSIDE REARVIEW MIRROR REAR WINDOW DEFOGGER GRID LT BLU WIRE LT HDLP FUSE RT HDLP FUSE NCA WIRE ORG/ WIRE PICKUP PNK A/C PRESSURE SENSOR BREAKOUT) WIRE PNK BLOWER MOTOR BREAKOUT) WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE AUTOMATIC TRANSMISSION PPL PPL PPL REAR DEFOGGER RELAY REAR WINDOW WIPER MOTOR RIGHT HEADLAMP HIGH BEAM BULB RIGHT HEATED SEAT (UTILITY) RIGHT OUTSIDE REARVIEW MIRROR RR W/W FUSE 39 STOP LAMP SWITCH STOP/LP FUSE SWITCH TBC FUSE TO A/C FUSE (DIAGRAM 4 OF 5) TRAILER WIRING PROVISIONS TRANSFER CASE CONTROL MODULE TRANSFER CASE CONTROL MODULE ASSEMBLY MANUAL TRANSMISSION CLUTCH TRANSMISSION RANGE SWITCH (A/T) TRCHMSL FUSE TRUCK BODY CONTROL MODULE TRUCK BODY CONTROL MODULE UNDERHOOD BUSSED ELECTRICAL CENTER UTILITY VECHMSL FUSE VEHICLE CONTROL MODULE W/ ESTC WHT WIRE YEL WIRE

18 19 PNK WIRE 9 10 PNK WIRE A/T M/T BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B FUSE FUEL LEVEL SENSOR/ FUEL PUMP (FUEL TANL) FUEL PUMP RELAY FUEL PUMP SWITCH/ ENGINE OIL PRESSURE GAUGE SENSOR (NEAR DISTRIBUTOR) FUEL TANK VAPOR PRESSURE SENSOR (FUEL TANK) GAUGE INPUT OIL PRESSURE GRN WIRE GRY WIRE HOT AT ALL TIMES INPUT ODOMETER SPEEDOMETER, INSTRUMENT CLUSTER INTAKE AIR TEMPERATURE SENSOR (IN AIR INTAKE DUCT ASSY) LINEAR EGR VALVE SOL BREAKOUT) LT BLU/WHT WIRE LT GRN WIRE MAF SIG MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP CENTER OF ENGINE) MANUAL TRANS CLUTCH MASS AIR FLOW SENSOR (MAF) (IN AIR INTAKE ASSY) MIL (CHECK ENGINE) INPUT ORG/ WIRE PICK-UP PNK 22 23 WIRE PNK PNK PNK 6 7 8 WIRE PNK PNK WIRE PNK WIRE PPL PPL PPL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 RED WIRE RED/BLK WIRE RTN SPLICE SPLICE PACK 422/423 (LEFT SIDE OF DASH) SWITCH (CLUTCH PEDAL BRACKET) TACHOMETER INPUT TAN WIRE THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) UNDERHOOD BUSSED ELECTRICAL CENTER UTILITY VAPOR VCM BREAKOUT) WHT WIRE YEL WIRE