Chevrolet Cab & Chassis K2500 (1989-2000) note: fuel injectors are located on top of engine, in intake manifold Wiring diagram

1-2 SHIFT SOL 2-3 SHIFT SOL 3-2 SHIFT SOL 4-SPEED TRANS. ONLY 6 7 9 8 9 PNK WIRE AIR INJECTION AIR INJECTION REACTION RELAY (UNDERHOOD FUSE/ RELAY CENTER) AUTOMATIC TRANSMISSION AUX-B FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT VALVE (LEFT SIDE OF ENGINE COMPT) EXHAUST GAS RECIRCULATION (EGR) VALVE (FRONT OF ENGINE NEAR THERMOSTAT HOUSING) FUEL INJ 1 FUEL INJ 2 FUEL INJ 3 FUEL INJ 4 FUEL INJ 5 FUEL INJ 6 FUEL INJ 7 FUSE GRY WIRE HOT AT ALL TIMES 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 ON TOP OF ENGINE, IN INTAKE MANIFOLD PNK FUEL INJ 8 WIRE PNK PNK PNK 1 2 3 4 5 WIRE PNK PNK PNK PNK PNK PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT (OR TAN) WIRE REACTION (SECONDARY) PUMP CLUTCH (ON FRONT OF PUMP) RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT (OR PPL) WIRE TCC SOLENOID TORQUE CONVERTOR CLUTCH PULSE WIDTH MODULATION SOLENOID TRANS.) UNDER HOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE YEL/BLK WIRE