Chevrolet Pickup K1500 (1988-1999) ecm ign fuse Wiring diagrams

1-2 SHIFT SOL 2-3 SHIFT SOL BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE ECM IGN FUSE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP FRONT OF ENGINE) FUSIBLE LINK GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START HOT IN START OR RUN FUSE BLOCK TRANS FUSE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PCM TRANS SHIFT SOL B PCM TRANS SHIFT SOL A PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (PCM) (UNDER RIGHT END OF I/P) PPL PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) SYSTEM GROUND DLC THROTTLE POSITION SENS SENSOR GROUND SENSOR GROUND TCC SOL TCC SOL CTRL RANGE SIGNAL "B" RANGE SIGNAL "C" TCC/BRAKE SWITCH (TOP OF BRAKE PEDAL) THROTTLE POSITION SENSOR (RIGHT SIDE OF TBI) TRANS FLUID TEMP (TFT) SENSOR TRANS FLUID TEMP SIG ECT SIG VEHICLE SPEED SENSOR BUFFER (UNDER RIGHT END OF I/P) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL ACCELERATOR PEDAL POSITION (APP) MODULE (TOP OF ACCE- LERATOR BRACKET) APP #3 APP #3 SENSOR SIG APP 1 BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR (BELOW LEFT SIDE OF I/P) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECM IGN FUSE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION ENGINE COOLANT TEMPERATURE (ECT) SENSOR (RIGHT SIDE OF ENGINE) FUSIBLE LINK GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START HOT IN START OR RUN FUSE BLOCK TRANS FUSE IGNITION FEED TCC DIAGNOSTIC REQUEST LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE PPL PPL APP #2 PPL TCC/BRAKE SW PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) TAN WIRE TCC SOL 2-3 SHIFT SOL TCC/ BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TRANS FLUID TEMP (TFT) SENSOR TRANS INPUT SPD SIG LO TRANSFER CASE SWITCH TRANSMISSION INPUT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (UNDER RIGHT END OF I/P) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL TCC SOL 2-3 SHIFT SOL 3-2 SHIFT SOL 999 998 961 452 1586 995 PPL ACCELERATOR PEDAL POSITION (APP) MODULE (TOP OF ACCE- LERATOR BRACKET) APP #3 APP #3 SENSOR SIG APP 1 BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR (BELOW LEFT SIDE OF I/P) DK BLU WIRE DK GRN WIRE ECM IGN FUSE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION ENGINE COOLANT TEMPERATURE (ECT) SENSOR (RIGHT SIDE OF ENGINE) FUSIBLE LINK GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START HOT IN START OR RUN FUSE BLOCK TRANS FUSE IGNITION FEED 3-2 CONTROL SOL DIAGNOSTIC REQUEST LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE PPL PPL APP #2 PPL TCC/BRAKE SW PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) TAN WIRE TAN/BLK WIRE TCC/ BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TRANS FLUID TEMP (TFT) SENSOR TRANSFER CASE SWITCH VEHICLE SPEED SENSOR BUFFER (UNDER RIGHT END OF I/P) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL ACCELERATOR PEDAL POSITION (APP) MODULE (TOP OF ACCE- LERATOR BRACKET) APP #3 APP #3 SENSOR SIG APP 1 BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR (BELOW LEFT SIDE OF I/P) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECM IGN FUSE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION ENGINE COOLANT TEMPERATURE (ECT) SENSOR (RIGHT SIDE OF ENGINE) FUSIBLE LINK GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START HOT IN START OR RUN FUSE BLOCK TRANS FUSE IGNITION FEED TCC DIAGNOSTIC REQUEST LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE PPL PPL APP #2 PPL TCC/BRAKE SW PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) TAN WIRE TCC SOL 2-3 SHIFT SOL TCC/ BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TRANS FLUID TEMP (TFT) SENSOR TRANS INPUT SPD SIG LO TRANSFER CASE SWITCH TRANSMISSION INPUT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (UNDER RIGHT END OF I/P) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AUDIO ALARM MODULE CONVENIENCE CENTER AUXILIARY COOLING FAN RELAY BACKUP LAMP SWITCH CONVENIENCE CENTER CRUISE CONTROL ACTIVATOR SWITCH CRUISE CONTROL MODULE DAYTIME RUNNING LAMPS MODULE (PICKUP ONLY) DAYTIME RUNNING LAMPS RELAY DK BLU WIRE ECM IGN FUSE EGR VENT SOLENOID EGR WIDTH MODULATED SOLENOID ENGINES ONLY) F/SOL FUSE FUEL HEATER FUEL INJECTION PUMP FUSE BLOCK GAUGES FUSE GLOW PLUG CONTROL MODULE IGNITION SWITCH INSTRUMENT CLUSTER PRINTED CIRCUIT LT BLU/BLK WIRE ONLY PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE PULSE WIDTH MODULATED BOOST SOLENOID REAR DEFOGGER SWITCH SOL FUSE TCC/ STOPLAMP SWITCH TURN SIGNAL FLASHER TURN-B/U FUSE WATER IN-FUEL SENSOR

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