Chevrolet Pickup C3500 (1988-2000) powertrain control module Wiring diagrams

AUDIO AMPLIFIER AUXILIARY POWER CONNECTOR REAR CONSOLE BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE DATA LINK CONNECTOR DIESEL DOOR LOCK INVERSION MODULE EXCEPT PICKUP, EXT. CAB FOUR-WHEEL DRIVE INDICATOR LAMP FRONT TEMPERATURE BLOWER DOOR MOTOR MOTOR FUEL GAUGE SENDER FUEL PUMP RELAY HEADLAMP CONTROL MODULE (LUXURY) INSTRUMENT CLUSTER INTERIOR LAMP CONTROL MODULE LEFT CENTER REAR HIGH POWER MOUNT WINDOW STOP- SWITCH LAMP LEFT FRONT LEFT FRONT POWER DOOR LOCK DOOR SWITCH LOCK SWITCH LEFT POWER LUMBAR SUPPORT MOTOR LEFT POWER RIGHT SEAT SEAT ADJUSTER POWER SWITCH LUMBAR MOTOR LEFT REAR HEATED SEAT SWITCH LEFT REAR LEFT REAR SEAT BELT HEATED SEAT SWITCH ELEMENT LEFT REAR RIGHT REAR HEATED SEAT SEAT BELT MODULE SWITCH LUXURY MASS AIRFLOW SENSOR MODE HIGH DOOR BLOWER MOTOR MOTOR RELAY OF LEFT DOOR HARNESS BREAKOUT) PICKUP ONLY PICKUP/ EXTENDED, CREW ONLY POWER AMPLIFIER RELAY POWER DOOR LOCKS ONLY PICKUP, EXT. CAB POWER WINDOW LEFT MASTER SWITCH FRONT POWER DOOR LOCK SWITCH POWER WINDOW MASTER SWITCH POWERTRAIN CONTROL MODULE REAR WINDOW DEFOGGER GRID (CREW CAB) REAR WINDOW LOCKOUT SWITCH (EXCEPT 2-DR UTILITY) RECIRCULATION DOOR BREAKOUT) RIGHT FRONT POWER LUMBAR RIGHT SUPPORT FRONT MOTOR POWER SEAT ADJUSTER SWITCH RIGHT FRONT POWER SEAT LUMBAR MOTOR RIGHT FRONT SEAT DOOR BELT LOCK SWITCH RELAY RIGHT LEFT FRONT FRONT SEAT POWER WINDOW BELT SWITCH SWITCH RIGHT REAR HEATED SEAT SWITCH RIGHT REAR POWER WINDOW SWITCH SECONDARY FUEL FUEL PUMP GAGE BALANCE SENDER MODULE SECURITY LED TAN/WHT WIRE TRANSFER EVO CASE SHIFT PASSLOCK CONTROL MODULE MODULE UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR BUFFER W/ DUAL TANKS W/ RKE W/O A/C W/ A/C W/O RKE

4.3L ONLY BALANCE FUEL GAGE SENDER BENCH OTHERS SEAT BLK WIRE BLK/WHT WIRE CENTER HIGH MOUNT STOP LAMP CONVENIENCE CENTER CONVENIENCE CENTER (UNDER LEFT SIDE OF I/P) DATA LINK CONNECTOR DIESEL DOOR LOCK RELAY ELECTROCHROMIC REARVIEW MIRROR W/ COMPASS FOUR-WHEEL DRIVE INDICATOR LAMP FUEL GAGE SENDER FUEL PUMP AND SENDER FUEL PUMP BALANCE MODULE INSTRUMENT CLUSTER INTERIOR LAMP CONTROL MODULE LEFT CLEARANCE LAMP LEFT FRONT POWER WINDOW LOCK SWITCH LEFT ILLUMINATED VANITY MIRROR LEFT POWER LUMBAR SUPPORT MOTOR LEFT REAR REAR POWER WINDOW WINDOW LOCKOUT SWITCH SWITCH MASS AIRFLOW SENSOR POWER AMPLIFIER POWER AMPLIFIER RELAY POWER FUEL STEERING PUMP CONTROL RELAY MODULE POWER OUTSIDE REARVIEW MIRROR SWITCH POWERTRAIN CONTROL MODULE REMOTE CONTROL DOOR LOCK RECEIVER RIGHT CLEARANCE LAMP RIGHT FRONT POWER WINDOW SWITCH RIGHT ILLUMINATED VANITY MIRROR RIGHT POWER LUMBAR SUPPORT MOTOR RIGHT POWER POWER LEFT POWER LUMBAR MOTOR SEAT RIGHT REAR POWER WINDOW SWITCH ROOF MARKER LAMPS SEAT BELT SWITCH TAN/WHT WIRE TRANSFER CASE MODE SELECTOR ILLUMINATION LAMP UNDER HOOD FUSE-RELAY CENTER VEHICLE SPEED SENSOR BUFFER WHT/ BLK WIRE

4.3L PNK WIRE 7.4L 6.5L 7.4L W/ CALIFORNIA EMISSIONS OTHERS A/C CLUTCH RELAY A/T M/T AIR BAG FUSE 10 AIR INJECTION REACTION SECONDARY RELAY BACKUP LAMP SWITCH BLK WIRE CAMSHAFT EXHAUST POSITION GAS SENSOR RECIRCULATION VALVE CONVENIENCE CENTER DAYTIME AUDIO RUNNING ALARM MODULE LAMPS RELAY DIESEL ONLY PNK WIRE EGR SOLENOID ELECTROCHROMATIC MIRROR W/ COMPASS ELECTRONIC INJECTION PUMP ENG-1 MINI FUSE EVAPORATIVE EMISSION CANISTER VENT EVAPORATIVE FUEL EMISSIONS PUMP CANISTER PURGE BALANCE SOLENOID VALVE RELAY FROM IGNITION SWITCH (DIAGRAM 2 OF 4) FUEL EGR GLOW WATER-IN- HEATER VENT PLUG FUEL SOLENOID CONTROL SENSOR MODULE FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR FUEL FUEL INJECTOR INJECTOR FUEL INJECTOR FUEL PUMP BALANCE MODULE FUEL SOL MINI FUSE ECM 1 MINI FUSE FUEL TANK DAYTIME SENDER RUNNING I/P MODULE LAMPS CLUSTER MODULE (4.3L) GASOLINE DIESEL 5.0L, 5.7L 4.3L GAUGES FUSE 4 HEATED HEATED MASS OXYGEN OXYGEN AIRFLOW SENSOR 1 SENSOR 2 SENSOR HEATED HEATED OXYGEN OXYGEN SENSOR 4 SENSOR 3 I/P FUSE BLOCK IGN E MINI FUSE IGNITION CRANK- CONTROL SHAFT MODULE POSITION SENSOR IGNITION CRANK- FUEL CONTROL SHAFT INJECTOR MODULE POSITION SENSOR INFLATABLE RESTRAINT I/P MODULE ENABLE SWITCH INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE M/T MASS AIR FLOW SENSOR NCA WIRE PNK WIRE POWER STEERING CONTROL MODULE POWERTRAIN CONTROL MODULE TRANSFER CASE CONTROL MODULE TURN B/U FUSE 16 TURN SIGNAL SWITCH UNDERHOOD FUSE-RELAY CENTER VEHICLE CONTROL MODULE VEHICLE IGNITION CONTROL COIL MODULE WASTEGATE SOLENOID YEL WIRE

5.0L, 5.7L 6.5L 7.4L 7.4L W/ CALIFORNIA EMISSIONS OTHERS A/C CLUTCH RELAY A/C COMPRESSOR CLUTCH RELAY AIR RELAY BALANCE MODULE BREAKOUT) CRANK- SHAFT POSITION SENSOR DIESEL ECM 1 FUSE EGR LINEAR PWM VALVE SOLENOID EGR SOLENOID ENG 1 FUSE ENGINE SHUTOFF SOLENOID FROM EBCM BREAKOUT) FROM SPLICE FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR FUEL FUEL INJECTOR INJECTOR FUEL FUEL PUMP PUMP BALANCE BALANCE MODULE RELAY FUEL HEATER FUEL IGNITION CRANK- INJECTOR CONTROL SHAFT MODULE POSITION SENSOR FUEL INJECTOR FUEL SOLENOID DRIVER GLOW PLUG RELAY IGN E FUSE IGNITION COIL IGNITION CONTROL MODULE MASS AIRFLOW SENSOR PNK (ENG HARN, 26 CM FROM EBCM BREAKOUT) WIRE PNK WIRE POWERTRAIN CONTROL MODULE UNDERHOOD FUSE BLOCK VEHICLE CONTROL MODULE WASTE GATE SOLENOID WATER IN-FUEL SENSOR

5.0L, 5.7L 6.5L 7.4L 7.4L W/ CALIFORNIA EMISSIONS OTHERS A/C CLUTCH RELAY A/C COMPRESSOR CLUTCH RELAY AIR INTAKE RECIRCULATION RELAY (5.7L) AIR RELAY BALANCE MODULE BREAKOUT) CRANK- SHAFT POSITION SENSOR DIESEL ECM 1 FUSE EGR LINEAR PWM VALVE SOLENOID EGR SOLENOID ENG 1 FUSE ENGINE SHUTOFF SOLENOID EVAPORATIVE EMISSIONS CANISTER PURGE SOLENOID VALVE FROM EBCM BREAKOUT) FROM SPLICE FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR FUEL FUEL INJECTOR INJECTOR FUEL FUEL PUMP PUMP BALANCE BALANCE MODULE RELAY FUEL HEATER FUEL IGNITION CRANK- INJECTOR CONTROL SHAFT MODULE POSITION SENSOR FUEL INJECTOR FUEL SOLENOID DRIVER GASOLINE GLOW PLUG RELAY IGN E FUSE IGNITION COIL IGNITION CONTROL MODULE MASS AIRFLOW EVAPORATIVE SENSOR EMISSION CANISTER VENT MASS EGR AIR FLOW BOOST SENSOR SOLENOID PNK (ENG HARN, 26 CM FROM EBCM BREAKOUT) WIRE PNK WIRE POWERTRAIN CONTROL MODULE UNDERHOOD FUSE-RELAY CENTER VEHICLE CONTROL MODULE WATER IN-FUEL SENSOR

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

4 WHEEL DRIVE LOW (UNDER RIGHT END OF I/P) SIGNAL AUTOMATIC TRANSMISSION ONLY BLK WIRE BRN WIRE CONVENIENCE CENTER (UNDER LEFT SIDE OF I/P) DK BLU WIRE DK GRN WIRE FRONT AXLE ACTUATOR SOLENOID (RIGHT SIDE OF FRONT DRIVE AXLE) FRONT AXLE SOLENOID SWITCH (RIGHT REAR SIDE OF FRONT DRIVE AXLE) FUSE GRY WIRE HOT IN RUN I/P FUSE BLOCK INDICATOR LAMP INSTRUMENT CLUSTER LT BLU WIRE PANEL DIMMER SWITCH (ASSEMBLY) PANEL LPS FUSE PICKUP PNK/WHT WIRE POWERTRAIN CONTROL MODULE PPL PPL PPL RED WIRE RWAL DIODE MODULE (UNDER LEFT SIDE OF I/P) TRANSFER CASE MODE SELECTOR ILLUMINATION LAMP (AT TRANSFER CASE SELECTOR LEVER) TRANSFER CASE RELAY (RIGHT REAR OF ENG COMPT, NEAR BATTERY JUNCTION BLOCK) TRANSFER CASE SWITCH (LEFT TOP OF TRANSFER CASE) TRANSFER CASE SYNCRONIZER

4 WHEEL DRIVE LOW (UNDER RIGHT END OF I/P) SIGNAL AUTOMATIC TRANSMISSION ONLY BLK WIRE BRN WIRE CONVENIENCE CENTER (UNDER LEFT SIDE OF I/P) DK BLU WIRE DK GRN WIRE FRONT AXLE ACTUATOR SOLENOID (RIGHT SIDE OF FRONT DRIVE AXLE) FRONT AXLE SOLENOID SWITCH (RIGHT REAR SIDE OF FRONT DRIVE AXLE) FUSE GRY WIRE HOT IN RUN I/P FUSE BLOCK INDICATOR LAMP INSTRUMENT CLUSTER LT BLU WIRE PANEL DIMMER SWITCH (ASSEMBLY) PANEL LPS FUSE PICKUP PNK/WHT WIRE POWERTRAIN CONTROL MODULE PPL PPL PPL RED WIRE RWAL DIODE MODULE (UNDER LEFT SIDE OF I/P) TRANSFER CASE MODE SELECTOR ILLUMINATION LAMP (AT TRANSFER CASE SELECTOR LEVER) TRANSFER CASE RELAY (RIGHT REAR OF ENG COMPT, NEAR BATTERY JUNCTION BLOCK) TRANSFER CASE SWITCH (LEFT TOP OF TRANSFER CASE) TRANSFER CASE SYNCRONIZER