Wiring diagram engine performance 4.3l (vin w)s for GMC Pickup C1500 (1985-1999)

1-2 SHIFT SOL CTRL TCC PWM SOL CTRL INJ 1 CTRL INJ 6 CTRL EGR POSIT INPUT 2-3 SHIFT SOL CTRL 3-2 CTRL SOL. CTRL BANK 1 SENSOR 1 (IN EXHAUST PIPE, NEAR CATALYTIC CONVERTER) BANK 1 SENSOR 2 (IN EXHAUST PIPE, NEAR CATALYTIC CONVERTER) BANK 2 SENSOR 1 (IN EXHAUST PIPE, NEAR CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAM POSIT SENS RTN FUEL LVL OUTPUT TCC ON/OFF SOL CTRL PPL CAM POSIT SENS SIG CAMSHAFT POSITION SENSOR (INSIDE DISTRIBUTOR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK WIRE GRN WIRE HALL EFFECT SENSOR HEATED OXYGEN IDLE AIR CTRL (IAC) A HI IDLE AIR CTRL (IAC) A HI INJ 2 CTRL INJ 3 CTRL IGN FEED KNOCK SENS SIG KNOCK SENSOR (ON REAR OF ENGINE BLOCK) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT LT LT PPL MAP SENS INPUT IAT SENS SIG ECT SENS INPUT THROTTLE POSIT SENS EVAP 472 410 NCA WIRE PNK 32 33 WIRE PNK PNK PNK PNK 5 6 7 8 WIRE PNK PNK PNK PPL 1 2 3 4 WIRE PNK WIRE PNK/BLK WIRE PPL PPL CRANK POSIT SENS SIG VSS RTN VSS SIGNAL CRANK POSIT SENS RTN PPL PNK WIRE PPL/WHT WIRE PURGE VALVE SENS RTN SENS SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE VEHICLE CONTROL MODULE (VCM) (ON LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPD OUTPUT SIG VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION, LEFT SIDE OF TRANSFER CASE VEHICLE SPEED SENSOR SHIELD WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL 20 21 22 23 24 PNK WIRE AUTOMATIC TRANSMISSION BANK 1 SENSOR 3 (IN EXHAUST PIPE, NEAR CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM 1 FUSE ENG 1 FUSE FUEL INJ 1 FUEL INJ 3 FUEL INJ 2 FUEL INJ 4 FUEL INJ 5 FUEL INJ 6 NO.6 GRY WIRE HEATED OXYGEN HOT IN RUN, START LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT PNK PNK WIRE NCA WIRE NOTE: FUEL INJECTORS ARE LOCATED IN THE TOP OF ENGINE, IN INTAKE MANIFOLD PNK 32 33 WIRE PNK PNK 1 2 WIRE PNK PNK PNK PNK 5 6 7 8 WIRE PNK PNK PNK PNK PNK PNK PNK WIRE PNK PNK PNK PPL 1 2 3 4 WIRE PNK WIRE PNK/BLK WIRE PPL PNK PNK WIRE PPL PNK WIRE PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC ON/OFF SOL 2-3 SHIFT SOL TCC PWM SOL 3-2 CONTROL SOL TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR (INTERNAL) UNDER HOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE YEL/BLK WIRE

16 PPL 20 21 22 23 24 PNK WIRE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CONVENIENCE CENTER DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUEL PUMP AND SENDER (IN FUEL TANK) GAUGES FUSE 4 GRN WIRE GRY WIRE HOT IN OFF, RUN OR START HOT IN RUN OR START I/P FUSE BLOCK INPUT FUEL LVL INPUT OIL GAUGE INPUT TACHOMETER INSTRUMENT CLUSTER INTAKE AIR TEMP SENSOR (IN AIR INTAKE DUCT) LT BLU/WHT WIRE LT GRN WIRE M/T ONLY MAP REF LO MASS AIR FLOW SENSOR (MAF) (IN AIR INTAKE DUCT) ORG/ WIRE PNK PNK 1 2 WIRE PNK PNK WIRE PNK WIRE PPL PNK PNK WIRE RED WIRE RED/BLK WIRE REF LO TEMP REF THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY ASSEMBLY) SERVICE ENGINE SOON INDICATOR SPEEDOMETER INPUT TAN WIRE TAN/BLK WIRE TRANS FUSE 20 UPSHIFT LAMP WHT WIRE YEL WIRE YEL/BLK WIRE

420 1807 PPL PPL BRAKE SWITCH INPUT SERIAL DATA SIG A/C REC SW A/C REQUEST SIGNAL AIR CONDI- TIONING SYSTEM AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 18 BRAKE SW INPUT BRN WIRE BRN/WHT WIRE CLUTCH PEDAL POSITION (CPP) SWITCH (AT TOP OF CLUTCH PEDAL) COMP CYCLING SW DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B MINI FUSE EST OUTPUT SIG EVO/PASSLOCK CONTROL MODULE (CENTER OF DASH) FROM I/P CLUSTER BREAKOUT) FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY FUEL PUMP RLY CTRL 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 FUSED OUTPUT GROUND GRY WIRE GRY/BLK WIRE HIGH VOLTAGE COIL WIRE HOT IN RUN HOT IN RUN OR START I/P FUSE BLOCK IGN INPUT IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION CONTROL MODULE (RIGHT SIDE REAR OF ENGINE) INPUT LT BLU/BLK WIRE LT BLU/WHT WIRE LT DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) ORG/ WIRE PNK IGNITION FEED IGN TIMING SIG. TACH. SIG. WIRE PNK PNK WIRE PNK WIRE POWER TRANS PRESS SIG-BIT 2 TRANS PRESS SIG-BIT 1 PPL PPL (OR PPL A/T M/T PPL PPL 420 OR PRESS CTRL SOL LO VCM GROUND VCM GROUND GROUND PRESS CTRL SOL. HI RADIO RED WIRE RED/BLK WIRE SHIFT IND LP OUT EGR VALVE CNTRL SPEED SENSOR SPEED SENSOR INPUT STOPLAMP/ CLUTCH SWITCH VCM INPUT VSS INPUT SERIAL DATA INPUT STOPLAMP SWITCH (TOP OF BRAKE PEDAL) TAN/BLK WIRE TRANS PRESS SIG-BIT 3 TRANSFER CASE CONTROL MODULE (UNDER DASH ON STEERING COLUMN SUPPORT BRACKET) TRANSFER CASE SWITCH (LEFT TOP OF TRANSFER CASE) TRANSMISSIONS SYSTEM (4 WHEEL DRIVE INDICATOR CIRCUIT) UNDERHOOD FUSE-RELAY CENTER VEHICLE CONTROL MODULE (VCM) (ON LEFT SIDE OF ENGINE COMPARTMENT) VSS SIG VSS SIG CHECK ENG LP IND OUT 389 419 WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE