Chevrolet Chevy Van G3500 (1996-1998) nca Wiring diagrams

A/T SHIFT LOCK SOLENOID ASHTRAY LAMP AUXILIARY BATTERY (6.5L VIN F) AUXILIARY POWER OUTLET BATTERY BLK WIRE BLK/WHT WIRE CIGARETTE LIGHTER CONVENIENCE CENTER CONVENIENCE CENTER (LEFT SIDE OF DASH) DATA LINK CONNECTOR DAYTIME RUNNING LAMP CONTROL MODULE DAYTIME RUNNING LAMPS RELAY HEADLAMP SWITCH I/P COMPARTMENT LAMP I/P RELAY CENTER IGNITION SWITCH W/ UPFITTER PROVISIONS ILLUMINATED ENTRY MODULE INSTRUMENT CLUSTER LEFT FRONT PARK AND TURN SIGNAL LAMP (INNER) (W/ COMPOSITE HEADLAMPS) LEFT FRONT PARK AND TURN SIGNAL LAMP (OUTER) (W/ COMPOSITE HEADLAMPS) LEFT FRONT PARK AND TURN SIGNAL LAMP (W/ SEALED BEAM HEADLAMPS) LEFT FRONT SIDE MARKER LAMP LEFT HEADLAMP (W/ SEALED BEAM HEADLAMPS) LEFT HIGH BEAM HEADLAMP (W/ COMPOSITE HEADLAMPS) LEFT LOW BEAM HEADLAMP (W/ COMPOSITE HEADLAMPS) LEFT POWER SEAT SWITCH LEFT SUN SHADE MIRROR LAMP LOW ENGINE COOLANT LEVEL INDICATOR MODULE (DIESEL) LOW ENGINE COOLANT LEVEL INDICATOR SENSOR (DIESEL) MULTI-FUNCTION ALARM MODULE NCA WIRE OF ENGINE COMPT) P/B BOOSTER FLUID FLOW SWITCH POWER ANTENNA ASSEMBLY POWER DOOR LOCK CONTROL MODULE POWER DOOR LOCK RELAY RADIO REMOTE CONTROL DOOR LOCK RECEIVER SIDE DOOR JAMB SWITCH (W/ UPFITTER PROVISIONS) RIGHT FRONT RIGHT FRONT PARK AND TURN SIGNAL LAMP (INNER) (W/ COMPOSITE HEADLAMPS) RIGHT FRONT PARK AND TURN SIGNAL LAMP (OUTER) (W/ COMPOSITE HEADLAMPS) RIGHT FRONT PARK AND TURN SIGNAL LAMP (W/ SEALED BEAM HEADLAMPS) RIGHT FRONT SIDE MARKER LAMP RIGHT HEADLAMP (W/ SEALED BEAM HEADLAMPS) RIGHT HIGH BEAM HEADLAMP (W/ COMPOSITE HEADLAMPS) RIGHT LOW BEAM HEADLAMP (W/ COMPOSITE HEADLAMPS) RIGHT SUN SHADE MIRROR LAMP SEAT BELT SWITCH STEERING COLUMN GROUND TEMPERATURE VALVE ACTUATOR MOTOR HEATER AND A/C CONTROLLER UPFITTER PROVISIONS RELAY W/ UPFITTER PROVISIONS W/O KEYLESS ENTRY WHT WIRE

15-77 CM FROM BREAKOUT TO CONNECTOR NEAR STARTER MOTOR) 4.3L 4.3L, GVW OVER 8500 LBS., FEDERAL EMISSIONS 5.0/ 5.7L 5.0L, 5.7L, 7.4L 7.4L 7.4L ONLY 7.4L OTHERS OTHERS 7.4L/ 4.3L SECONDARY AIR INJECTION REACTION PUMP CLUTCH (7.4L ONLY) A/C COMPRESSOR CLUTCH COIL A/C LOW PRESSURE CUTOUT SWITCH A/C LOW PRESSURE CUTOUT SWITCH FUEL PUMP AND SENDER BLK WIRE BLK/WHT WIRE BLOWER MOTOR RESISTOR/ RELAY BRAKE PRESSURE DIFFERENTIAL SWITCH CRUISE CONTROL MODULE INSTRUMENT CLUSTER DATA LINK CONNECTOR DIODE ELECTRONIC BRAKE CONTROL MODULE EVAP EMISSION CANISTER VACUUM SWITCH EVO/ PASSLOCK MODULE EXCEPT 7.4L FUEL PUMP RELAY GASOLINE ENGINES HEATED OXYGEN SENSOR (BANK 1, SENSOR 3) HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR, BANK 1 SENSOR 1 PARK/ NEUTRAL POSITION SWITCH HEATED OXYGEN SENSOR, BANK 1 SENSOR 2 HEATED OXYGEN SENSOR, BANK 1 SENSOR 3 HORNS IGNITION CONTROL MODULE INFLATABLE RESTRAINT FRONT END DISCRIMINATING SENSOR INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE LEFT FRONT DOOR JAMB SWITCH LEFT FRONT POWER DOOR LOCK SWITCH LEFT FRONT POWER SIDE WINDOW SWITCH LEFT POWER OUTSIDE REAR VIEW MIRROR MASS AIR FLOW SENSOR NCA WIRE OTHERS 7.4L OTHERS EXCEPT 7.4L POWER OUTSIDE REAR VIEW MIRROR REMOTE CONTROL SWITCH RIGHT FRONT DOOR JAMB SWITCH RIGHT FRONT POWER DOOR LOCK SWITCH RIGHT FRONT POWER SIDE WINDOW SWITCH RIGHT POWER OUTSIDE REAR VIEW MIRROR STARTER RELAY TAN/WHT WIRE UNDERHOOD FUSE-RELAY CENTER UNDERHOOD REEL LAMP UNDERHOOD LAMP VEHICLE CONTROL MODULE

A/C COMPRESSOR CLUTCH COIL AMBULANCE PACKAGE BLK WIRE BLK/WHT WIRE BLOWER MOTOR RESISTOR/ RELAY BLUNT CUT) BRAKE PRESSURE DIFFERENTIAL SWITCH CENTER HIGH MOUNTED STOPLAMP CENTER HIGH MOUNTED STOPLAMP DATA LINK CONNECTOR DIESEL ENGINES DIODE ELECTRONIC BRAKE CONTROL MODULE EVO/ PASSLOCK MODULE FRONT AUXILIARY HVAC CONTROL MODULE HEATER AND A/C CONTROL LOGIC MODULE FUEL HEATER FUEL LIFT PUMP FUEL PUMP RELAY FUEL SENDER BUFFER MODULE GLOW PLUG RELAY HORNS INSTRUMENT CLUSTER LEFT BACK-UP LAMP LEFT REAR PARK/ STOP LAMP LEFT REAR PARK/ TURN LAMP NCA WIRE PARK/ NEUTRAL POSITION SWITCH PASSENGER VANS ONLY POWERTRAIN CONTROL MODULE REAR AUXILIARY HVAC CONTROL MODULE RIGHT BACK-UP LAMP LICENSE LAMP RIGHT POWER SEAT SWITCH RIGHT REAR DOOR JAMB SWITCH SIDE DOOR JAMB SWITCH RIGHT REAR PARK/ STOP LAMP RIGHT REAR PARK/ TURN LAMP STARTER RELAY TAN/WHT WIRE UNDERHOOD FUSE-RELAY CENTER UNDERHOOD LAMP UNDERHOOD REEL LAMP VEHICLE SPEED SENSOR BUFFER W/ AUXILIARY HEAT ONLY W/ AUXILIARY HEAT, A/C WATER IN FUEL INDICATOR

4.3L, 5.0L, 5.7L ONLY BLK WIRE DIESEL DK GRN WIRE GASOLINE HORN BRUSH HORN FUSE HORN RELAY HORN SWITCH HORNS (LEFT FRONT OF VEHICLE) HOT AT ALL TIMES NCA WIRE ORG/ WIRE STEERING COLUMN GROUND TURN SIGNAL SWITCH UNDERHOOD FUSE/RELAY CENTER

4 5 6 PNK PNK WIRE AIR BAG IND ANTI-LOCK BRAKES SYSTEM ENGINE CONTROLS SYSTEM ANTI-LOCK BRAKES WARNING IND BAT IND BLK WIRE BLK/WHT WIRE BRAKE IND IN BRAKE TT BRAKE PSI IGN PK BRAKE BRAKE WARNING IND BRN WIRE BRN/WHT WIRE CHECK GAUGES IND CHECK GAUGES LAMP DRIVER DAYTIME RUNNING LAMP CONTROL MODULE (UNDER LEFT SIDE OF DASH, TAPED TO HARNESS) DIESEL ONLY EXTERIOR LIGHTS SYSTEM DIODE-I DK BLU WIRE DK GRN WIRE DRL LAMP IND ELECTRONIC BRAKE CONTROL MODULE (LEFT FRAME RAIL, NEAR CENTER OF VEHICLE) ENGINE COOLANT TEMPERATURE GAUGE SENDER (LEFT SIDE OF ENGINE BLOCK) FUEL GAUGE GAUGES FUSE 4 GRN/BLK WIRE GRY WIRE HEADLIGHTS SYSTEM HIGH BEAM IND HOT IN RUN OR START I/P FUSE BLOCK (LOWER LEFT KICK PANEL) IGNITION SWITCH ILLUMIN- ATION LAMPS INSTRUMENT CLUSTER LEFT TURN IND LOCK LOW COOLANT IND. (DIESEL) LT BLU WIRE LT GRN WIRE NCA WIRE OFF OIL PRESS GAUGE PARK/NEUTRAL POSITION, BACKUP LAMP SWITCH (LEFT SIDE OF TRANSMISSION) PNK 1 2 WIRE PNK IGN FEED IND CTRL GND WIRE PNK WIRE PPL PPL/WHT WIRE PRNDL CIRCUIT BOARD RIGHT TURN IND RUN WIRE SAFETY BELT IND SERVICE ENGINE SOON IND SERVICE THROTTLE SOON IND (DIESEL) SOLID STATE SPEEDOMETER/ ODOMETER STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE TEMP GAUGE UNDERHOOD FUSE-RELAY CENTER (LEFT FRONT FENDER) UNDERHOOD FUSE-RELAY CENTER (LEFT FRONT FENDER) ENG-I MINI FUSE VOLT- METER WAIT IND (DIESEL) WARNING SYSTEM ENGINE CONTROLS SYSTEM DIESEL ONLY WATER IN FUEL IND. (DIESEL) WATER-IN-FUEL SENSOR (DIESEL ONLY) (LEFT FRAME RAIL, NEAR CENTER OF VEHICLE) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

2-3 SHIFT SOL BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (PART OF DISTRIBUTOR, REAR TOP OF ENGINE) CANISTER VET SIG CMP RETURN FUEL LVL SIG OUT TCC SOL OUTPUT PPL CMP SIGNAL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK WIRE EVAPORATIVE EMISSION CANISTER VENT VALVE (ON LEFT FRAME RAIL, NEAR EBCM) GRN WIRE KNOCK SENS SIGNAL KNOCK SENSOR (TOP REAR OF ENGINE) 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 SIGNAL IAT SIG ECT SIG TP SIG FUEL TANK PRESS SIG 472 410 NCA WIRE PNK 12 13 14 15 16 WIRE PNK PNK PPL PNK PNK 1 2 3 4 5 6 7 8 WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PPL PPL CKP LOW VSS LOW CSS SIG CKP SIG PPL PNK WIRE PPL PPL PPL/WHT WIRE RED/BLK WIRE SHIFT SOLENOID OUTPUT SOLID STATE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TEMP SENS SIGNAL MAF SIGNAL IAC HIGH IAC LOW FUEL INJ 4 FUEL INJ 3 VEHICLE CONTROL MODULE (VCM) (LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION) VSS SIGNAL WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 4-SPEED TRANS. ONLY 6 7 8 9 10 11 PNK PNK PNK PNK WIRE A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM 1 FUSE ENG 1 FUSE EXHAUST GAS RECIRCULATION VALVE (TOP FRONT OF ENGINE) FUEL INJ 1 FUEL INJ 2 FUEL INJ 3 FUEL INJ 4 FUEL INJ 5 FUEL INJ 6 FUEL INJ 7 FUEL INJ 8 GRN WIRE GRY WIRE HOT IN RUN OR START IGNITION PRESSURE CONTROL SOLENOID VALVE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT PNK WIRE NCA WIRE PNK 1 2 WIRE PNK 12 13 14 15 16 WIRE PNK LT WIRE PNK PNK PPL PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK WIRE RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TCC PCM SOLENOID VALVE TCC SOLENOID VLAVE 3-2 SHIFT SOLENOID TEMP SENSOR SIGNAL TEMP SENSOR GROUND TRANS.) UNDER HOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE YEL/BLK WIRE

2-3 SHIFT SOL CTRL AIR INJECTION RLY CTRL VSS SIGNAL OUT ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU DK WIRE BRN WIRE BRN/WHT WIRE CAM POS SENS SIGNAL CAMSHAFT POSITION SENSOR (PART OF DISTRIBUTOR, REAR TOP OF ENGINE) CRANKSHAFT POSITION SENSOR (LOWER FRONT OF ENGINE, NEAR CRANKSHAFT) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP VENT VLV EVAPORATIVE EMISSION CANISTER VENT VALVE (ON LEFT FRAME RAIL, NEAR EBCM) EVAPORATIVE EMISSIONS CANISTER PURGE VALVE (LEFT SIDE OF ENGINE) IDLE AIR CONTROL VALVE (TOP RIGHT SIDE OF ENGINE) IGN FEED KNOCK SENS SIGNAL KNOCK SENSOR (ON LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR (ON LOWER RIGHT SIDE OF ENGINE) LEFT SENS LO (POST CAT) LEFT SENS LO (PRE CAT) RIGHT SENS LO (POST CAT) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAP SIGNAL INTAKE AIR TEMP SENS ECT SENS SIGNAL NCA WIRE PNK 8 9 10 WIRE PNK IGN FEED SENS RTN SENS SIG WIRE PNK PNK 1 2 WIRE PNK WIRE PNK/BLK WIRE PPL PPL CKP POS SENS RTN VSS RTN VSS SIGNAL CKP POS SIGNAL IN PPL PPL PPL PPL 4 5 PPL/WHT WIRE RED WIRE RED/BLK WIRE RIGHT SENS LO (PRE CAT) SENS RTN FUEL GAUGE SECONDARY AIR INJECTION REACTION PUMP CLUTCH (LOWER RIGHT FRONT OF ENGINE) SECONDARY AIR INJECTION REACTION PUMP RELAY (UNDERHOOD FUSE/ RELAY CENTER) SENSOR RTN SENSOR SIGNAL TAN WIRE TAN/WHT WIRE THROTTLE POS SENS FUEL TANK PRESS SENS SIG VEHICLE CONTROL MODULE (VCM) (LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPEED SENSOR (LEFT SIDE OF TRANS- MISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENG 1 FUSE EXHAUST GAS RECIRCULATION VALVE SOLENOID (TOP LEFT SIDE OF ENGINE) FLUID TEMPERATURE SENSOR FUEL INJ 1 FUEL INJ 2 FUEL INJ 3 FUEL INJ 4 FUEL INJ 5 FUEL INJ 6 FUEL INJ 7 FUEL INJ 8 GRN WIRE GRY WIRE HOT IN OFF, RUN OR START HOT IN RUN OR START I/P FUSE BLOCK IGNITION INTAKE AIR TEMP SENSOR (ON FRONT OF ENGINE, PART OF AIR INTAKE DUCT) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK 8 9 10 WIRE PNK PNK 1 2 WIRE PNK PNK 14 15 WIRE PNK PNK PNK 5 6 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL 4 5 PPL/ WHT WIRE PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE SOLENOID 1-2 SOLENOID 2-3 SWITCH PRESSURE TAN WIRE TAN/ WHT WIRE TAN/WHT WIRE TCC SOLENOID TRANS FUSE 20 UNDERHOOD FUSE/RELAY CENTER WHT LT BLU/ WIRE WHT PPL/ WIRE WHT TAN/ WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

22 23 PPL A/C COMPRESSOR ENABLE RELAY UNDERHOOD FUSE/RELAY CENTER A/C LOW PRESSURE SIG A/C REQUEST SIGNAL AIR CONDITIONING SYSTEM AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) B(+) BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL MODULE (FRONT OF ENGINE COMPT NEAR LEFT FENDER) CRUISE CTRL ENGAGED CRUISE CTRL SIG-ENGAGED DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM I FUSE ECM-B FUSE EGR VALVE CTRL ELEC SPK TIMING CTRL SIGNAL EST CTRL FORCE MTR FEED SENS RTN SENS RTN ELEC SPK TIMING CTRL SIG FORCE MTR RTN GROUND GROUND SENS GROUND FUEL PMP RLY CTRL 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY UNDERHOOD FUSE-RELAY CENTER GROUND GRY WIRE HIGH VOLTAGE COIL WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN FEED IGN FEED PRESS SW SIG PRESS SW SIG 1225 1224 PNK WIRE IGNITION COIL (TOP REAR OF ENGINE) IGNITION CONTROL MODULE (TOP REAR OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE NCA WIRE ORG/ WIRE PNK IGN FEED WIRE PNK WIRE PPL PPL PNK PNK PNK 1 2 3 4 5 6 WIRE PPL PPL 420 1807 BRAKE SW INPUT SERIAL DATA PPL PPL ANTI-LOCK BRAKES SYSTEM PPL SIGNAL RETURN PPL TCC/STOPLAMP INPUT PRESS SW SIG RADIO, POWER STEERING CONTROL MODULE RED WIRE RED/BLK WIRE SPEED SENSOR INPUT TAN/WHT WIRE UNDERHOOD FUSE/RELAY CENTER VEHICLE CONTROL MODULE (VCM) (LEFT SIDE OF ENGINE COMPARTMENT) VSS SIGNAL VSS OUTPUT CHECK ENGINE LP CTRL 389 419 WHT WIRE WHT/BLK WIRE