GMC Cab & Chassis K2500 (1989-2000) Wiring diagram engine performance 5.0l (vin h)s, m/t

413 412 PPL AIR CONDITIONING SYSTEM (A/C COMPRESSOR CLUTCH) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRANK SIGNAL COOLANT TEMP SENS SIG MAP SENSOR SIGNAL DATA LINK CONNECTOR (UNDER LEFT SIDE OF I/P) DISTRIBUTOR REF HI DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B MINI FUSE ECM-I MINI FUSE EGR SOLENOID MIL INDICATOR CTRL ENG-I MINI FUSE FUEL PUMP RELAY CTRL FUEL PUMP SIGNAL INPUT DISTRIBUTOR REF LO GAUGES FUSE 4 GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN, BULB TEST OR START HOT IN START I/P FUSE BLOCK CRANK FUSE 8 IAC COIL B LO IAC COIL B HI IAC COIL A HI IAC COIL A LO IDLE AIR CONTROL UNIT (RIGHT REAR OF TBI UNIT) IGN E MINI FUSE IGNITION CONTROL (IC) IC BYPASS OXYGEN SENSOR GROUND OXYGEN SENSOR SIGNAL INJECTOR 1 DRIVER INJECTOR 2 DRIVER INSTRUMENT CLUSTER LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE OXYGEN SENSOR (RIGHT SIDE EXHAUST MANIFOLD) PNK 21 22 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (UNDER RIGHT SIDE OF I/P) PPL PPL/WHT WIRE RED/BLK WIRE SERVICE ENGINE SOON INDICATOR SPARK RETARD SIGNAL A/C ON SIGNAL IN SYSTEM GROUND SYSTEM GROUND SENSOR RETURN GROUND TAN WIRE TAN/BLK WIRE THROTTLE BODY FUEL INJECTOR #1 (TOP OF THROTTLE BODY UNIT) THROTTLE BODY FUEL INJECTOR #2 (TOP OF THROTTLE BODY UNIT) TP SENSOR SIGNAL UNDERHOOD FUSE/RELAY CENTER (LEFT REAR OF ENGINE COMPT) UP- SHIFT LAMP UPSHIFT LAMP CTRL DLC SERIAL DATA DLC DIAGNOSTIC TEST VSS BUFFER SIGNAL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

423 3 121 PNK WIRE ACCY BLK WIRE BLK/WHT WIRE BRN WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EGR ELEC- TRONIC VACUUM REGULATOR SOLENOID (5.7L H/D ONLY) (RIGHT TOP OF ENGINE) ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF LEFT CYLINDER HEAD) FUEL PUMP AND SENDER FUEL PUMP CYCLE MODULE (5.7L H/D ONLY) FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY (UNDERHOOD FUSE/RELAY CENTER) GRY WIRE HOT AT ALL TIMES IGNITION COIL (CENTER REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (RIGHT SIDE OF ENGINE, BELOW EXHAUST MANIFOLD) KNOCK SENSOR MODULE (ABOVE RIGHT SIDE ROCKER COVER) LOCK OFF LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (RIGHT REAR TOP OF ENGINE) NCA WIRE OIL PRESS IN ORG/ WIRE PNK 21 22 WIRE PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE RUN WIRE TACH IN TACHOMETER TEST LEAD TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (RIGHT SIDE OF THROTTLE BODY) VEHICLE SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (UNDER RIGHT END OF I/P) VSS IN WHT WIRE YEL WIRE YEL/BLK WIRE