GMC C3500 HD (1991-2000) Power distribution circuit, gasoline

ACCY AUDIO BATTERY BLK WIRE BLK/RED WIRE BRN WIRE BULB TEST CIGARETTE LIGHTER CIRCUIT BREAKER CLUTCH PEDAL SWITCH CONVEN- IENCE CENTER CONVENIENCE CENTER CRANK FUSE CTSY FUSE PARK LPS FUSE DAYTIME RUNNING LAMPS RELAY FUEL AUXILLARY PUMP COOLING RELAY FAN RELAY FUSE BLOCK FUSES FUSIBLE FUSIBLE LINK GENERATOR GRY WIRE HEADLIGHT SWITCH ASSEMBLY HIGH BLOWER RELAY HORN RELAY (CONVENIENCE CENTER) HTR-A/C, RR HVAC, IGNITION COIL IGNITION SWITCH LINK LOCK LOCK OFF LOW BLOWER MEDIUM RELAY BLOWER RELAY MODULE OFF ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE POWERTRAIN FUEL CONTROL PUMP/OIL MODULE PRESSURE (PCM) SWITCH PPL PPL/ WHT WIRE PWR RADIO DOME LAMP REAR (PCM) WINDOW RELEASE RELAY REAR WINDOW RELEASE SWITCH RED WIRE RR WPR, FRT WPR, RDO FUSES AND AND PWR WDO CIRCUIT BREAKER RUN WIRE STARTER MOTOR SOLENOID STOP FUSE SUBURBAN, UTILITY EXC. SUBURBAN, UTILITY SUBURBAN, UTILITY ONLY ENGINES W/ MANUAL TRANSMISSIONS ONLY T/G REL FUSE DRL FUSE TRANS, ECM-IGN, TURN B/U INJ, GAUGES FUSES FUSES VIN H&K MANUAL TRANS ONLY W/ AUTO TRANS W/ AUTOMATIC TRANSMISSION WHT PPL/ WIRE YEL WIRE

& CRUISE FUSES A/T M/T AUX FAN MINI FUSE AUXILIARY COOLING FAN RELAY BATTERY BLK WIRE BLK/RED (OR BLK) WIRE BRAKE LAMP RELAY BRAKE PRESSURE MODULATOR VALVE BRN WIRE CRANK FUSE 8 DIAGNOSTIC ENERGY RESERVE MODULE EXCEPT 4.3L FUSIBLE HEATER-A/C CONTROL I/P FUSE BLOCK IGNITION SWITCH INSTRUMENT CLUSTER LINK LOCK LOCK OFF M/T ONLY MAXI FUSE MAXI FUSE 2 MAXI FUSE 4 MAXI FUSE 5 MAXI FUSE 6 MAXI FUSE 7 MAXI FUSE 8 NCA WIRE OFF ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) PPL RED WIRE REMOTE BATTERY STUD RR-DEFOG MINI FUSE RUN WIRE STARTER GENERATOR MOTOR SOLENOID TO BLOWER RELAYS TO CTSY, PK LPS, DRL/FOG FUSES, HEAD- LAMP SWITCH TO ECM-B, HORN, A/C COMP FUSES TO GAUGES, AIR BAG FUSES TO HTR-A/C, TO IGN-E, ECM-I, ENG-1 FUSES TO RADIO/ BATT, CIG LTR, AUX PWR FUSES, PWR ACCY BREAKER TO WIPER, RADIO, REAR WIPER FUSES TRANS FUSE 20 TRANS- MISSION TRANSMISSION CLUTCH RANGE SWITCH SWITCH UNDERHOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE

BLK ORG/ WIRE BLK WIRE BRN WIRE CIRCUIT BREAKER CONVENIENCE CENTER FRT WPR FUSE FUSE BLOCK FUSIBLE LINK IGNITION SWITCH IN-LINE FUSE LEFT FRONT POWER WINDOW SWITCH LEFT POWER SEAT ORG BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE POWER POWER DOOR LOCK RELAY POWER OUTSIDE MIRROR SWITCH PWR WDO CIRCUIT BREAKER RADIO RDO FUSE REAR WINDOW DEFOGGER SWITCH REAR WIPER/ WASHER SWITCH RED WIRE RIGHT FRONT POWER WINDOW SWITCH RIGHT LEFT POWER POWER DOOR LOCK DOOR LOCK SWITCH SWITCH RIGHT LEFT REAR REAR POWER POWER WINDOW WINDOW SWITCH SWITCH RR WPR FUSE SUBURBAN, UTILTY ONLY WHT WIRE WIPER MOTOR MODULE WIPER/ WASHER SWITCH YEL WIRE

4.3L, 5.0L, 5.7L ONLY 5.7L W/ H/D A/T A/C COMP MINI FUSE A/C LOW PRESSURE CUTOUT SWITCH AUXILIARY FUEL COOLING CYCLE FAN CONTROL RELAY MODULE BRN WIRE CONVENIENCE CENTER ECM-B MINI FUSE ECM-I MINI FUSE EGR ELECTRONIC VACUUM REGULATOR SOLENOID ELECTRONIC HEATED SPARK OXYGEN CONTROL SENSOR MODULE ENG-I MINI FUSE EXCEPT 4.3L 5.7L H/D W/ M/T FROM AUX FAN FUSE FROM IGNITION SWITCH FROM MAXI FUSE 6 FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL PUMP OIL PRESSURE SWITCH/ SENDER FUEL PUMP RELAY HIGH BLOWER RELAY HORN MINI FUSE HORN RELAY I/P FUSE BLOCK IGN E MINI FUSE LOW BLOWER RELAY M/T ONLY MAXI FUSE 3 MEDIUM BLOWER RELAY ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE POWERTRAIN CONTROL MODULE (PCM) RADIO RADIO FUSE 17 REAR WIPER FUSE 23 REAR WIPER/ WASHER SWITCH RED WIRE SUBURBAN ONLY SUBURBAN, UTILITY ONLY TO POWER WINDOW CIRCUIT BREAKER UNDER HOOD FUSE-RELAY CENTER UNDERHOOD FUSE-RELAY CENTER UNDERHOOD REEL LAMP WHT WIRE WIPER FUSE 11 WIPER MOTOR MODULE WIPER/ WASHER SWITCH YEL WIRE

A/C CLUTCH RELAY A/C CONTROL MODULE ANTILOCK BRAKE MODULE AUXILLIARY AUXILLIARY HEATER-A/C HEATER-A/C REAR LOGIC CONTROL MODULE AUXILLIARY BATTERY RELAY AUXILLIARY HEATER-A/C FRONT CONTROL BRAKE FUSE BRN WIRE BRN/WHT WIRE CONVENIENCE CENTER DK GRN WIRE ELECTRONIC TRANSMISSION 4-SPEED AUTOMATIC W/OVERDRIVE EXCEPT VIN Z FUSE FUSE BLOCK GRY WIRE HEATED OXYGEN SENSOR HEATER BLOWER SWITCH HEAVY DUTY ELECTRONIC TRANSMISSION 4-SPEED AUTOMATIC W/OVERDRIVE HIGH BLOWER RELAY HTR A/C FUSE IGNITION SWITCH INJ FUSE LOW BLOWER RELAY MED BLOWER RELAY MODE DOOR MOTOR ORG/ WIRE PANEL DIMMER SWITCH ASSEMBLY (INTERIOR LIGHTS SYSTEM) PNK WIRE PNK/BLK (OR PNK) WIRE PNK/BLK WIRE PNK/WHT WIRE PNL LPS FUSE RED WIRE RR HVAC FUSE TEMP DOOR MOTOR THROTTLE THROTTLE BODY FUEL BODY FUEL INJECTOR A INJECTOR B TRANS FUSE TRANSFER CASE SWITCH VEHICLE SPEED SENSOR BUFFER MODULE VIN Z ONLY W/ AIR CONDITIONING WHT WIRE

ALL EXCEPT PICKUP, 2 DOOR UTILITY W/O KEYLESS ENTRY AMPLIFIER RELAY AUDIO ALARM MODULE CONVENIENCE CENTER AUX PWR FUSE 7 AUXILIARY POWER FEED AUXILIARY POWER SUPPLY SOCKET BLK WIRE BUCKETS OR SPLIT BENCH ONLY CIG LTR FUSE 13 CIGARETTE LIGHTER CONVENIENCE CENTER DOOR RIGHT LOCK FRONT RELAY DOOR LOCK SWITCH FROM MAXI FUSE 7 HAZARD FLASHER (CONVENIENCE CENTER) I/P FUSE BLOCK LEFT LEFT FRONT FRONT POWER DOOR SEAT LOCK SWITCH LEFT REAR FRONT LIFTGATE DOOR RELEASE LOCK SWITCH SWITCH LEFT RIGHT FRONT FRONT POWER POWER LUMBAR LUMBAR SWITCH SWITCH ORG/ WIRE PICKUP ONLY PICKUP/2 DOOR UTILITY W/O KEYLESS ENTRY ALL OTHER POWER ACCY CIRCUIT BREAKER RADIO RADIO BATT FUSE 19 RED WIRE REMOTE KEYLESS ENTRY MODULE RIGHT FRONT DOOR LOCK SWITCH STOP/ HAZARD FUSE 1 SUBURBAN, UTILITY ONLY TCC/ STOPLAMP SWITCH

AIR DIVERT SOLENOID (VIN H,K LIGHT DUTY ONLY) AIR SWITCHING VALVE SOLENOID (VIN N ONLY) AUXILLIARY HOT FUEL COOLING HANDLING FAN MODULE RELAY BACKUP LAMP SWITCH BLK PNK/ WIRE CONVENIENCE CENTER CRUISE CONTROL ACTIVATOR SWITCH CRUISE DAYTIME CONTROL RUNNING MODULE LAMPS RELAY DAYTIME RUNNING LAMPS MODULE (PICKUP ONLY) DK BLU WIRE ECM IGN FUSE ENGINE ENGINES, LIGHT DUTY, ESC MODULE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (W/ NRQ) EXHAUST GAS RECIRCULATION SOLENOID VALVE FUSE BLOCK GAUGES FUSE HEATED OXYGEN SENSOR (VINS H, K) IGNITION SWITCH INSTRUMENT AUDIO CLUSTER ALARM PRINTED MODULE CIRCUIT CONVENIENCE CENTER LINEAR EGR REGULATOR VALVE SOLENOID (W/ NRQ) OVERSPEED ALARM MODULE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE REAR DEFOGGER SWITCH (SUBURBAN, UTILITY ONLY) TCC/ STOPLAMP SWITCH TROTTLE ACTUATOR SOLENOID (VIN N ONLY) TURN SIGNAL FLASHER CONVENIENCE CENTER TURN-B/U FUSE VIN N ONLY VINS H, K ONLY

AUDIO ALARM MODULE AUXILIARY HEATER/ A/C CONTROL REAR AUXILIARY REAR HEATER/ WIPER/ A/C CONTROL WASHER FRONT SWITCH CARGO LAMP SWITCH CONVENIENCE CENTER CTSY FUSE 3 DAYTIME RUNNING LAMPS RELAY DIODE DK GRN WIRE DRL/FOG FUSE 15 FOG FOG LAMP LAMP RELAY RELAY FOG LAMP SWITCH FROM MAXI FUSE 8 FRONT DOME/ READING LAMPS GLOVE BOX LAMP) GRY WIRE HEADLAMP AND PANEL DIMMER SWITCH I/P FUSE BLOCK ILLUM FUSE 14 INSTRUMENT CLUSTER LEFT FRONT DOOR COURTESY LAMP LEFT I/P SPARE COURTESY POWER LAMP SOURCE LEFT REAR DOOR COURTESY LAMP LEFT VANITY MIRROR ORG/ WIRE PARK LAMPS PICKUP ONLY PICKUP SUBURBAN, UTILITY PK LPS FUSE 9 RADIO HEATER/ CARGO LAMP A/C CONTROL SWITCH LAMP REAR DOME READING LAMPS REAR LIFTGATE RELEASE SWITCH RED WIRE REMOTE OUTSIDE MIRROR SWITCH RIGHT FRONT DOOR COURTESY LAMP RIGHT I/P COURTESY LAMP RIGHT REAR DOOR COURTESY LAMP RIGHT VANITY MIRROR SUBURBAN ONLY SUBURBAN, UTILITY ONLY TWO WHEEL DRIVE INDICATOR

ABS BRAKE MODULE AUXILIARY HEATER/ A/C CONTROL LOGIC MODULE AUXILIARY HEATER/ A/C CONTROL MODULE (FRONT) AUXILIARY HEATER/ A/C CONTROL MODULE (REAR) AUXILIARY STORAGE BATTERY RELAY BRAKE FUSE 18 BRN WIRE CONVENIENCE CENTER CRUISE CONTROL MODULE CRUISE CONTROL SWITCH CRUISE FUSE 6 FOUR- WHEEL DRIVE INDICATOR FROM IGNITION SWITCH FUSE 24 GASOLINE ONLY HEATER-A/C CONTROL HIGH BLOWER RELAY (REAR) HTR A/C FUSE 12 I/P FUSE BLOCK LOW BLOWER RELAY (REAR) MEDIUM BLOWER RELAY (REAR) ORG/ WIRE REAR AUXILIARY MODE DOOR MOTOR REAR AUXILIARY TEMPERATURE DOOR MOTOR RECIRC- ULATION DOOR MOTOR RR HVAC FUSE 5 (SUBURBAN ONLY) SPARE FOUR POWER WHEEL SOURCE DRIVE INDICATOR SPARE POWER SOURCE SUBURBAN, DIESEL ALL OTHERS TCC/ STOPLAMP SWITCH TEMPER- MODE ATURE DOOR DOOR MOTOR MOTOR

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