Chevrolet Chevy Express G3500 (1996-2012) blk Wiring diagrams

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH ABS RELAY, POWER BRAKE BOOSTER, ELECTRONIC BRAKE CONTROL MODULE ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM (ELECTRONIC BRAKE CONTROL MODULE) ANTI-LOCK BRAKES SYSTEM PPL APP 3 SIG SENS GROUND A/T ISS SENS HI AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (ON LEFT SIDE OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM I FUSE ECM-B FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP FRONT OF ENGINE) FUEL PUMP RELAY GAUGES FUSE 4 GLOW PLUG RELAY, TURBOCHARGER WASTEGATE SOLENOID, EPR SOLENOID GRY WIRE HOT AT ALL TIMES HOT IN HOT IN OFF, RUN OR START HOT IN RUN OR START I/P FUSE BLOCK (LOWER LEFT KICK PANEL) INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF DASH) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PNK PNK WIRE PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE REV, LO RUN WIRE SOUND SYSTEMS TAN WIRE TAN/WHT WIRE TCC PWM SOLENOID TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT) TRANS FLUID TEMP SENSOR TRANS FUSE 20 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON LEFT SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (UNDER GLOVE BOX) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 15 14 PNK IGNITION SERIAL DATA SERIAL DATA WIRE 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 9 11 10 PPL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH ABS RELAY, POWER BRAKE BOOSTER, ELEC BRAKE CONTROL MODULE ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM PPL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ENGINE COOLANT TEMPERATURE SENSOR (RIGHT SIDE OF ENGINE) FLUID TEMP SENSOR GAUGES FUSE 4 GRY WIRE HOT AT ALL TIMES HOT IN HOT IN OFF, RUN, START HOT IN RUN, START I/P FUSE BLOCK (LOWER LEFT KICK PANEL) INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK REV, LO WIRE PNK WIRE POWERTRAIN CONTROL MODULE (ON LEFT INNER FENDER PANEL) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PPL PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE RUN WIRE TCC PWM SOLENOID TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT) TRANS FUSE 20 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) ETC FUSE VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

BATTERY BLK (OR RED) WIRE BLK WIRE BRN WIRE CHARGE INDICATOR FUSIBLE LINK (10 GA-RUST) GAUGES FUSE 4 GENERATOR GRY WIRE HOT IN RUN, START I/P FUSE BLOCK (ON LEFT LOWER KICK PANEL) INSTRUMENT CLUSTER PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) RED WIRE STARTING/CHARGING SYSTEM (STARTING CIRCUIT)

ACCY LOCK OFF AUXILIARY BATTERY BATTERY BATTERY JUNCTION BLOCK ORANGE LABEL STUD BLK WIRE BLUE LABEL STUD CRANK FUSE 8 DIESEL FUSIBLE LINK (14 GA- GAS GAS FUSIBLE LINK (8 GA-RUST: DIESEL) FUSIBLE LINK (10 GA- RUST) GASOLINE GENERATOR GRY WIRE HOLD-IN WINDING PULL-IN WINDING I/P FUSE BLOCK (ON LEFT LOWER KICK PANEL) IGNITION SWITCH PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) POWER DISTRIBUTION SYSTEM PPL RED WIRE RUN WIRE STARTER MOTOR STARTER RELAY (IN UNDERHOOD FUSE/RELAY CENTER) STARTER SOLENOID UNDERHOOD FUSE/RELAY CENTER (ON LEFT SIDE OF ENGINE COMPARTMENT) BATT IGN-A FUSE WHITE LABEL STUD YEL WIRE

ACCY LOCK OFF AUXILIARY BATTERY BATTERY BATTERY JUNCTION BLOCK ORANGE LABEL STUD BLK WIRE BLUE LABEL STUD CRANK FUSE 8 DIESEL FUSIBLE LINK (14 GA- GAS GAS FUSIBLE LINK (8 GA-RUST: DIESEL) FUSIBLE LINK (10 GA- RUST) GASOLINE GENERATOR GRY WIRE HOLD-IN WINDING PULL-IN WINDING I/P FUSE BLOCK (ON LEFT LOWER KICK PANEL) IGNITION SWITCH PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) POWER DISTRIBUTION SYSTEM PPL RED WIRE RUN WIRE STARTER MOTOR STARTER RELAY (IN UNDERHOOD FUSE/RELAY CENTER) STARTER SOLENOID UNDERHOOD FUSE/RELAY CENTER (ON LEFT SIDE OF ENGINE COMPARTMENT) BATT IGN-A FUSE WHITE LABEL STUD YEL WIRE

ACCY LOCK OFF AUXILIARY BATTERY BATTERY BATTERY JUNCTION BLOCK ORANGE LABEL STUD BLK WIRE BLUE LABEL STUD CRANK FUSE 8 DIESEL FUSIBLE LINK (14 GA- GAS GAS FUSIBLE LINK (8 GA-RUST: DIESEL) FUSIBLE LINK (10 GA- RUST) GASOLINE GENERATOR GRY WIRE HOLD-IN WINDING PULL-IN WINDING I/P FUSE BLOCK (ON LEFT LOWER KICK PANEL) IGNITION SWITCH PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) POWER DISTRIBUTION SYSTEM PPL RED WIRE RUN WIRE STARTER MOTOR STARTER RELAY (IN UNDERHOOD FUSE/RELAY CENTER) STARTER SOLENOID UNDERHOOD FUSE/RELAY CENTER (ON LEFT SIDE OF ENGINE COMPARTMENT) BATT IGN-A FUSE WHITE LABEL STUD YEL WIRE

1 2 3 4 PPL PNK PNK WIRE 6 7 8 PPL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE FUEL PUMP AND SENDER ASSEMBLY GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (IN EXHAUST, FRONT OF CATALYTIC CONV) HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 INSTRUMENT CLUSTER SYSTEM KNOCK SENSOR BANK 1 (LOWER LEFT SIDE OF ENG) KNOCK SENSOR BANK 2 (LOWER RIGHT SIDE OF ENG) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL 29 30 PPL/WHT WIRE RED WIRE RED/WHT WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK FUEL PUMP RELAY WHT WIRE YEL WIRE

1 2 3 4 PPL PNK PNK WIRE 1-2 SOL 2-3 SOL 29 30 31 32 PNK WIRE 6 7 8 PPL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (TOP CENTER FRONT OF ENGINE) EVAPORATIVE EMISSION CANISTER VENT SOLENOID (FRONT OF EVAP CANISTER) EXHAUST GAS RECIRCULATION VALVE (TOP REAR OF ENGINE) GRY DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN OFF, RUN, START HOT IN RUN I/P FUSE BLOCK TRANS FUSE 20 LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF INTAKE MANIFOLD) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK 3 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE REV STOP FUSE 1 TCC SOL TCC/ STOP- LAMP SWITCH (ON BRAKE PEDAL SUPPORT) TFT SENSOR VEHICLE SPEED SENSOR (ON LEFT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 PPL PNK PNK WIRE 25 26 27 PNK WIRE 29 30 31 32 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (BELOW DASH, ATTACHED TO ACCELERATOR PEDAL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENG 1 FUSE ETC FUSE GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN, START IGN INTAKE AIR TEMPERATURE SENSOR (PART OF AIR INTAKE DUCT) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (FRONT TOP OF ENGINE) ORG/BLK WIRE PNK 3 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PPL PPL PNK PNK PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE RED/WHT WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/WHT WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (LEFT REAR OF ENGINE COMPT) THROTTLE ACTUATOR CONTROL MOTOR (RIGHT SIDE OF THROTTLE BODY) THROTTLE POSITION SENSOR (DUAL TRACK) (LEFT SIDE OF THROTTLE BODY) TP SENS 1 TP SENS 2 UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 PPL PNK PNK WIRE 25 26 27 PNK WIRE A/C CLU A/C REQ A/C SYSTEM A/C SYSTEM 1310 419 1223 1222 1827 ANTI-LOCK BRAKE SYSTEM (SPEED SIGNAL) AUTOMATIC TRANS- MISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANS) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CTRL DELIVERED TORQ PC SOL HI EGR CTRL PC SOL LO FUEL PMP DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM 1 FUSE EVAP CANP CHARGE IND EVAP VENT MIL CTRL 2-3 SS 1-2 SS VSS OUT VSS OUT TFT SENS SIG GEN F FUEL LEV GAUGES FUSE 4 GEN TO GRY WIRE HOT IN RUN, START I/P FUSE BLOCK IAT SIG IGN CTRL IGN CTRL IGN CTRL IGN CTRL PPL IGN IGN CTRL IGN CTRL IGN CTRL IGN CTRL IGNITION COILS IND CTRL FUEL LEV IGN FEED GND EGR GND PPL INSTRUMENT CLUSTER SYSTEMS (SPEED SIGNAL) INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF SIG MAP SIG MALFUNCTION INDICATOR LAMP NCA WIRE PNK WIRE POWERTRAIN CONTROL MODULE (ON LEFT INNER FENDER) PPL PPL FUEL LEV CYC SW IN PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE REDUCED ENGINE POWER IND REF LO REF LOW REF LOW PRND C TRANS RNG A FUEL SIG CTRL SENS GND SPARK PLUG SPARK PLUG SPARK PLUG STARTING/CHARGING SYSTEM TAN WIRE UNDERHOOD FUSE BLOCK VSS LOW VSS HIGH WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE