Chevrolet Chevy Express G1500 (1996-2012) tow/ haul switch Wiring diagrams

1 2 6 8 20 21 22 23 40 42 47 48 51 62 63 GND TCC PWM CTRL PC SOL HI CTRL AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE SENSOR (ON LEFT SIDE OF ENGINE) FROM UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START IGN 0 FUSE 6 INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PC SOL LO CTRL PPL FRONT LOW SIG FRONT HIGH SIG PCM BATT FUSE 2 PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PRNDL INDICATOR RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOW/ HAUL SWITCH TOW/HAUL INDICATOR TOW/HAUL SWITCH SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 6 8 20 21 22 23 24 40 42 47 48 51 62 63 GND TCC PWM CTRL PC SOL HI CTRL 1 8 17 18 19 20 24 27 GND AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE SENSOR (ON LEFT SIDE OF ENGINE) FROM UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) LT GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START IGN 0 FUSE 6 INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PC SOL LO CTRL PPL FRONT LOW SIG FRONT HIGH SIG PCM BATT FUSE 2 PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PRNDL INDICATOR RANGE B RANGE C IGN B+ GND GND RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (ON LEFT SIDE OF THROTTLE BODY) TOW/ HAUL SWITCH TOW/HAUL INDICATOR TOW/HAUL SWITCH UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

AIR TEMPERATURE ACTUATOR AMBIENT LIGHT SENSOR AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SOLENOID BCK/UP LAMP PCB BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO DR UNLOCK PCB CENTER CONSOLE 2 ACCESSORY POWER OUTLET CONNECTOR DATA LINK CONNECTOR (DLC) DRIVER INFORMATION CENTER (DIC) SWITCH DRV UNLCK PCB ELECTRONIC COMPASS MODULE FTR REAR DR LOCK PCB FTR REAR PASS DR UNLCK PCB HEADLAMP, PANEL DIMMER SWITCH HEAVY DUTY HORN SWITCH HVAC CONTROL ASSEMBLY INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM (PPS) SENSOR INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT I/P MODULE INDICATOR INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INFLATABLE RESTRAINT VEHICLE ROLLOVER SENSOR INSTRUMENT PANEL CLUSTER (IPC) LEFT STEERING WHEEL CONTROL SWITCH LIGHT DUTY REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RIGHT STEERING WHEEL CONTROL SWITCH RUN WIRE RV UPFITTER STEERING WHEEL SPEED/ POSITION SENSOR THEFT DETERRENT MODULE TOW/ HAUL SWITCH TOWARDS INSTRUMENT CLUSTER PANEL) TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ AUTOMATIC ELECTRONIC CRUISE CONTROL W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ REAR WINDOW DEFOGGER, POWER MIRRORS W/ REDUNDANT RADIO STEERING WHEEL CONTROL W/ REMOTE KEYLESS ENTRY, LOW TIRE PRESSURE INDICATOR W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER WHT WIRE WINDSHIELD WASHER FLUID PUMP WINDSHIELD WIPER MOTOR

AIR TEMPERATURE ACTUATOR AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SOLENOID BCK/UP LAMP PCB BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO DR UNLCK PCB CENTER CONSOLE 2 ACCESSORY POWER OUTLET CONNECTOR DATA LINK CONNECTOR (DLC) DRIVER INFORMATION CENTER (DIC) SWITCH DRVR DR UNLCK PCB ELECTRONIC COMPASS MODULE FTR REAR DR LCK PCB FTR REAR PASS DR UNLCK PCB HEADLAMP, PANEL DIMMER SWITCH HEAVY DUTY HORN SWITCH HVAC CONTROL ASSEMBLY INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM (PPS) SENSOR INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT I/P MODULE INDICATOR INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INFLATABLE RESTRAINT VEHICLE ROLLOVER SENSOR INSTRUMENT PANEL CLUSTER (IPC) LEFT STEERING WHEEL CONTROL SWITCH LIGHT DUTY REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RIGHT STEERING WHEEL CONTROL SWITCH RUN WIRE RV UPFITTER STEERING WHEEL SPEED/ POSITION SENSOR THEFT DETERRENT MODULE TOW/ HAUL SWITCH TOWARDS INSTRUMENT CLUSTER PANEL) TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ AUTOMATIC ELECTRONIC CRUISE CONTROL W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ REAR WINDOW DEFOGGER, POWER MIRRORS W/ REDUNDANT RADIO STEERING WHEEL CONTROL W/ REMOTE KEYLESS ENTRY, LOW TIRE PRESSURE INDICATOR W/ VECHICLE COMMUNICATION SYSTEM W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER W/O VECHICLE COMMUNICATION SYSTEM WHT WIRE WINDSHIELD WASHER FLUID PUMP WINDSHIELD WIPER MOTOR