GMC Suburban C1500 (1985-1999) pnk 25 26 27 Wiring diagrams

452 455 PPL AIR CONDITION- ING SYSTEM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE COOLANT TEMP. SENSOR CRUISE CONTROL SYSTEM CRUISE IND REG GRD DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE DLC THROTTLE POSITION SENSOR IN LO SIDE INJ A ECM IGN FUSE EGR VALVE SOLENOID ELEC FUEL PUMP IN MAP SENSOR IN ENGINE CONTROL MODULE (UNDER RIGHT SIDE OF I/P) EVAP CANISTER PURGE CTRL EVAPORATIVE CANISTER PURGE SOLENOID (ON ENGINE) FUEL PUMP RELAY CTRL PCM TRANS FORCE MTR LO FUSE BLOCK GRY WIRE GRY/RED WIRE HOT IN RUN OR START HOT IN RUN, BULB TEST OR START IDLE AIR CONTROL UNIT (RIGHT REAR OF TBI UNIT) IGNITION BYPASS INJ FUSE KNOCK SENSOR IN LINEAR EGR POSITION IN LINEAR EGR REGULATOR SOLENOID VALVE (RIGHT TOP OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE ORG/BLK WIRE OXYGEN SENSOR LO PCM TO TRANS TEMP SENSOR PCM TRANS RANGE A TRANS INPUT SPEED IN HI TRANS INPUT SPEED IN LO PCM TRANS RANGE B PCM TRANS RANGE C MIL INDICATOR CTRL PCM TRANS SHIFT SOL B PCM TRANS SHIFT SOL A PNK 25 26 27 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 1 2 3 4 PPL 22 23 PPL/WHT WIRE RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE ACTUATOR SOL CTRL TCC CLUTCH CTRL A/C ON SIGNAL IN BRAKE SW TO PCM THROTTLE BODY FUEL INJECTOR #1 (TOP OF THROTTLE BODY UNIT) THROTTLE BODY FUEL INJECTOR #2 (TOP OF THROTTLE BODY UNIT) TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANS- MISSION) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

423 3 121 PNK WIRE ACCY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (RIGHT TOP FRONT OF ENGINE) FUSE BLOCK GAUGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION COIL (CENTER REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (RIGHT SIDE OF ENGINE, BELOW EXHAUST MANIFOLD) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (RIGHT REAR TOP OF ENGINE) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 25 26 27 WIRE PNK WIRE PNK/ BLK WIRE PNK/BLK WIRE PPL PPL 1 2 3 4 PPL 22 23 PPL 4 5 PPL/WHT WIRE RED WIRE RED/BLK WIRE RUN WIRE SERVICE ENGINE SOON INDICATOR TACHOMETER TEST LEAD TAN/BLK WIRE TCC/BRAKE SWITCH (TOP OF BRAKE PEDAL BRACKET) THROTTLE POSITION SENSOR (RIGHT SIDE OF THROTTLE BODY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE