GMC Suburban C1500 (1985-1999) gauges fuse 4 Wiring diagrams

1-2 SHIFT SOL 1-2 SHIFT SOLENOID 2-3 SHIFT SOL 2-3 SHIFT SOLENOID A/T ISS SENS HI IN A/T ISS SENS IN A/T ISS SENS LO IN A/T ISS SENSOR OUT ACCELERATOR PEDAL POSITION MODULE (PART OF ACCELERATOR PEDAL) APP 1 SIGNAL IN APP 2 SIGNAL IN APP 3 SIGNAL IN AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT FRONT OF TRANSMISSION) BATTERY IN BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRAKE FUSE 18 BRAKE SWITCH ASSEMBLY (ON BRAKE PEDAL BRACKET) BRAKE SWITCH IN BRN WIRE BRN/WHT WIRE CLASS II DATA DK BLU WIRE DK GRN WIRE ECM-B FUSE ECT SENSOR IN ENGINE COOLANT TEMP SENSOR (NEAR THERMOSTAT HOUSING) FRONT WHEEL LOCK FUEL PUMP, OIL PRESS SWITCH/ SENDER, FUEL PUMP RELAY GAUGES FUSE 4 GROUND GRY WIRE GRY/BLK WIRE HI PPL HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT IN RUN OR START UNDERHOOD FUSE/RELAY CENTER ECM 1 FUSE HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK IGNITION IN INSTRUMENT CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP MIL CONTROL ORG/ WIRE PCM GROUND PCS SOL HI OUT PCS SOL LO OUT PNK PNK WIRE PNK WIRE POWER POWERTRAIN CONTROL MODULE (RIGHT SIDE OF DASH NEAR BLOWER MOTOR) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL/WHT WIRE PRESS CTRL SOLENOID LO RED WIRE RED/BLK WIRE SENSOR GROUND STOP/HAZ FUSE 1 STOPLAMP SWITCH IN TAN WIRE TAN/WHT WIRE TCC PWM SOL TCC PWM SOLENOID TFT SENSOR IN TRANS FLUID TEMP SENSOR TRANS FUSE 20 TRANS RANGE "A" TRANS RANGE "B" TRANS RANGE "C" TRANS RANGE PRESSURE SWITCH ASSEMBLY TRANS RANGE SWITCHES TRANSFER CASE CIRCUIT PNK WIRE TRANSFER CASE, AXLE SWITCHES TURN/ HAZARD SWITCH, CHIME MODULE VEHICLE SPEED SENSOR VEHICLE SPEED SENSOR (VSS) ADAPTOR VEHICLE SPEED SENSOR BUFFER (RIGHT SIDE OF DASH) VSS HI IN VSS IN VSS LO IN VSS OUT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

ALL OTHERS BLK WIRE BRN WIRE CHARGE INDICATOR FUSIBLE LINK (10 GA-RUST) GAUGES FUSE 4 GENERATOR GENERATOR (W/ DUAL GENERATORS) HOT IN RUN OR START I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) INSTRUMENT CLUSTER LEFT BATTERY (DIESEL) MEGA FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT, NEAR BATTERY) PNK 22 WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RIGHT BATTERY UPLEVEL/ ENHANCED

A/T ACCY AIR BAG ANTI-LOCK BRAKES ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BRAKE PRESSURE WARNING SWITCH (ON REAR OF BRAKE PRESSURE MODULATOR VALVE BODY) BRAKE/ BRN WIRE BRN/WHT WIRE BULB TEST CHECK GAUGES CHECK GAUGES LAMP DRIVER CONVENIENCE CENTER (BEHIND LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC PRNDL DISPLAY MODULE ENG-I MINI FUSE ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM SOUND SYSTEMS ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENDER (FRONT OF LEFT CYLINDER HEAD) FUEL GAUGE FUEL PUMP, SENDER (IN FUEL TANK) GAUGES FUSE 4 GEN WAIT TO GRY WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM (DRL) HI BEAM HOT IN RUN OR START I/P FUSE BLOCK (BEHIND LEFT SIDE OF I/P) IGNITION SWITCH ILLUM INSTRUMENT CLUSTER LEFT TURN LOCK OFF W/ DRL ONLY LOW COOLANT LOW COOLANT LEVEL SENDER (IN COOLANT RESERVOIR) LOW ENGINE COOLANT LEVEL INDICATOR MODULE (UNDER CENTER OF I/P) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE M/T PNK WIRE NCA WIRE OIL PRESS OIL PRESSURE SWITCH/SENDER (LEFT REAR TOP OF ENGINE) PARK BRAKE WARNING SWITCH (LEFT END OF I/P) PNK WIRE PPL PPL/WHT WIRE RIGHT TURN RUN WIRE SAFETY BELT SERVICE ENGINE SOON SERVICE THROTTLE SOON UP- SHIFT SPEED- OMETER STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TACH VOLT- METER TAN WIRE TAN/ WHT WIRE TAN/BLK WIRE TAN/WHT WIRE TEMP GAUGE TRANS FUSE 20 TRANSMISSSION RANGE SELECTOR TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK/TAIL- GATE/FUEL DOORS SYSTEM UNDERHOOD FUSE/RELAY CENTER (LEFT REAR OF ENGINE COMPT) VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (BEHIND RIGHT END OF I/P) W/O DRL ONLY WARNING SYSTEMS WATER IN FUEL WATER-IN FUEL SENSOR (TOP REAR OF ENGINE) WHT TAN/ WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

A/T ACCY AIR BAG DAYTIME RUNNING LAMPS ANTI-LOCK BRAKES ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BRAKE PRESSURE WARNING SWITCH (ON REAR OF BRAKE PRESSURE MODULATOR VALVE BODY) BRAKE/ BRN WIRE BRN/WHT WIRE BULB TEST CHECK GAUGES CHECK GAUGES LAMP DRIVER CONVENIENCE CENTER (BEHIND LEFT SIDE OF I/P) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC PRNDL DISPLAY MODULE ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM SOUND SYSTEMS ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENDER (FRONT OF LEFT CYLINDER HEAD) FUEL GAUGE FUEL PUMP OIL PRESSURE SWITCH/SENDER (TOP REAR OF ENGINE) FUEL PUMP, SENDER (IN FUEL TANK) GAUGES FUSE 4 GEN GRY WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM (DRL) HI BEAM HOT IN RUN OR START I/P FUSE BLOCK (BEHIND LEFT SIDE OF I/P) IGNITION SWITCH ILLUM INSTRUMENT CLUSTER LEFT TURN LOCK OFF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE M/T PNK WIRE NCA WIRE OIL PRESS PARK BRAKE WARNING SWITCH (LEFT END OF I/P) PNK WIRE PPL PPL/WHT WIRE RIGHT TURN RUN WIRE SAFETY BELT SERVICE ENGINE SOON SPEED- OMETER STARTING/CHARGING SYSTEM SYSTEM SUPPLEMENTAL RESTRAINTS TACH VOLT- METER TAN WIRE TAN/ WHT WIRE TAN/BLK WIRE TAN/WHT WIRE TEMP GAUGE TRANS FUSE 20 TRANSMISSION RANGE SELECTOR (LEFT SIDE OF TRANSMISSION) TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK/TAIL- GATE/FUEL DOORS SYSTEM UP SHIFT VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (BEHIND RIGHT END OF I/P) W/ DRL ONLY W/O DRL ONLY WARNING SYSTEMS WHT TAN/ WIRE WHT WIRE YEL WIRE

260 (CROSS BODY HARNESS, 4 DOOR 4-DOOR 2-DOOR 640 (OR 540) 1576 (OR 56) 294 39 157 1455 150 195 156 BLK (OR BLK/WHT) WIRE BLK WIRE BLK/WHT WIRE CARGO DOOR JAMB SWITCH CARGO DOOR LOCK SWITCH (W/ CARGO DOORS) CIG LTR FUSE 13 CONVENIENCE CENTER (LEFT SIDE OF DASH) DATA LINK INTERIOR CONNECTOR LAMPS (UNDER LEFT SYSTEM SIDE OF DASH) DOOR LOCK CONTROL MODULE (FRONT OF LEFT REAR WHEELWELL) DOOR LOCK RELAY (UNDER CENTER OF DASH, NEAR REMOTE CONTROL DOOR LOCK RECEIVER) GAUGES FUSE 4 GROUND DOOR JAMB SW LOCK SIG UNLOCK SIG PPL GRY WIRE HORNS SYSTEM HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK (LEFT SIDE OF DASH, LEFT FRONT DOOR JAMB SWITCH LEFT FRONT DOOR LOCK ACTUATOR LEFT FRONT DOOR LOCK SWITCH LEFT REAR DOOR JAMB SWITCH LEFT REAR DOOR LOCK ACTUATOR LOCK LT BLU WIRE LUXURY ORG/ WIRE ORG/BLK WIRE PNK WIRE PPL PWR-ACCY CIRCUIT BREAKER REAR CARGO DOOR LOCK ACTUATOR (CARGO DOORS) REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND CENTER OF DASH) RIGHT FRONT DOOR JAMB SWITCH RIGHT FRONT DOOR LOCK ACTUATOR RIGHT FRONT DOOR LOCK SWITCH RIGHT REAR CARGO DOOR CONTACTOR (RIGHT REAR DOOR JAMB) RIGHT REAR DOOR JAMB SWITCH RIGHT REAR DOOR LOCK ACTUATOR RR DOOR SW BATT (B+) SEAT BELT SWITCH BREAKOUT) SUBURBAN/ UTILITY TAN WIRE TRUNK, TAIL- GATE, FUEL DOORS SYSTEM UNLOCK UTILITY W/ REAR CARGO DOORS UTILITY W/ REAR LIFTGATE W/ CARGO DOORS W/ LIFTGATE W/ CARGO DOORS W/O POWER WINDOWS W/ POWER WINDOWS WHT WIRE

AIR BAG FUSE 10 ARMING SENSOR BACKUP LAMP SWITCH BRN WIRE CONVENIENCE CENTER CREWCAB, SUBURBAN, UTILITY ONLY DAYTIME AUDIO RUNNING ALARM LAMPS MODULE RELAY DAYTIME RUNNING LAMPS MODULE DIAGNOSTIC ENERGY RESERVE MODULE ELECTRO- CHROMIC MIRROR FROM IGNITION SWITCH FROM REAR WIPER FUSE GAUGES FUSE 4 HEAD- LAMP/ PANEL DIMMER SWITCH I/P FUSE BLOCK INSTRUMENT CLUSTER LEFT FRONT POWER WINDOW SWITCH LOW ENGINE COOLANT LEVEL MODULE M/T ONLY PNK WIRE PWR WDO CIRCUIT BRKR REAR WINDOW LOCKOUT SWITCH REMOTE KEYLESS ENTRY MODULE RIGHT FRONT POWER WINDOW SWITCH TURN B/U FUSE 16 TURN SIGNAL LAMP FLASHER VEHICLE SPEED SENSOR BUFFER MODULE YEL WIRE

AIR BAG FUSE 10 ARMING SENSOR AUDIO ALARM MODULE BACKUP LAMP SWITCH BRN WIRE CONVENIENCE CENTER CREWCAB, SUBURBAN, UTILITY ONLY DAYTIME RUNNING LAMPS MODULE DAYTIME RUNNING LAMPS RELAY DIAGNOSTIC ENERGY RESERVE MODULE ELECTRO- REMOTE CHROMIC KEYLESS MIRROR ENTRY MODULE FROM IGNITION SWITCH FROM REAR WIPER FUSE GAUGES FUSE 4 HEAD- LAMP/ PANEL DIMMER SWITCH I/P FUSE BLOCK INSTRUMENT CLUSTER LEFT FRONT POWER WINDOW SWITCH M/T ONLY PNK WIRE PWR WDO CIRCUIT BRKR REAR WINDOW LOCKOUT SWITCH RIGHT FRONT POWER WINDOW SWITCH TURN B/U FUSE 16 TURN SIGNAL LAMP FLASHER VEHICLE SPEED SENSOR BUFFER MODULE YEL WIRE

AIR BAG FUSE 10 AIR BAG IND BLK WIRE BLK/WHT WIRE BRN WIRE DK GRN WIRE DK GRN/WHT WIRE GAUGES FUSE 4 GRY WIRE HOT IN RUN OR START HOT W/ HEADLAMP SWITCH IN PARK OR HEADLAMP I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) ILLUM FUSE 14 INFLATABLE RESTRAINT I/P MODULE (RIGHT SIDE OF DASH) INFLATABLE RESTRAINT I/P MODULE SWITCH (PICKUP ONLY) INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE (UNDER DRIVER'S SEAT CARPET) INFLATABLE RESTRAINT STEERING WHEEL MODULE (STEERING WHEEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT CLUSTER NAVIGATION SYSTEM (UNDER LEFT SIDE OF DASH) DATA LINK CONNECTOR (DLC) PNK INTERIOR LIGHTS (DIMMER SWTCH) WIRE PNK WIRE PPL/WHT WIRE SHORTING SHORTING BAR SHORTING BAR BAR SOLID STATE TAN WIRE TAN/BLK WIRE WARNING SYSTEMS (SEAT BELT SWITCH) WHT WIRE WHT/BLK WIRE YEL WIRE

AUDIO ALARM MODULE (ON CONVENIENCE CENTER) BLK WIRE BLK/WHT WIRE DIESEL GAS GAUGES FUSE 4 GRY WIRE HOT AT ALL TIMES HOT IN PARK OR HEADLIGHT HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) ILLUM FUSE 14 INSTRU- MENT CLUSTER SAFETY BELTS INDICATOR KEY-IN WARNING BUZZER SWITCH LEFT DOOR JAMB SWITCH LIGHTS ON INPUT POWER INPUT KEY-IN WARNING LT GRN WIRE ORG/ WIRE PNK IGNITION ON INPUT WIRE PNK WIRE SEAT BELT INPUT GROUND FASTEN BELTS OUT SEAT BELT SWITCH (IN DRIVER'S SAFETY BELT BUCKLE) STOP/HAZ FUSE 1 SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE YEL WIRE

4.3L ONLY 423 3 121 PNK WIRE ACCY BLK WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF ENGINE) GAUGES FUSE 4 GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK (BEHIND LEFT SIDE OF I/P) IGNITION COIL (CENTER REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (4.3L ONLY) (REAR OF ENGINE) KNOCK SENSOR (RIGHT SIDE OF ENGINE, BELOW EXHAUST MANIFOLD) LINEAR EGR VALVE (4.3L W/ 4L60E, CALIF EMISS. ONLY) (RIGHT SIDE TOP OF ENGINE) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (RIGHT REAR TOP OF ENGINE) NCA WIRE ORG/ WIRE PNK WIRE PPL PPL 1 2 3 4 PPL 23 24 PPL/WHT WIRE RED WIRE RED/BLK WIRE RUN WIRE SERVICE ENGINE SOON INDICATOR TACHOMETER TEST LEAD TAN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (TOP OF BRAKE PEDAL BRACKET) THROTTLE POSITION SENSOR (RIGHT SIDE OF THROTTLE BODY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE