Ground distribution circuit for Chevrolet Chevy Express H1500 (2003-2012)

4.3L 4.3L/5.3L 4.8L 6.0L 4.8L/5.3L/6.0L AUXILIARY BATTERY BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BRAKE FLUID LEVEL SWITCH BREAKOUT) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) ENGINE CONTROL MODULE (ECM), FUEL PRESSURE REGULATOR 2 SHIELD FUEL FUEL FILTER PRESSURE SWITCH GLOW PLUG EXHAUST GAS CONTROL RECIRCULATION (EGR) MODULE VALVE SHIELD HORN ASSEMBLY IGNITION COIL 3 IGNITION IGNITION COIL 1 COIL 8 IGNITION IGNITION IGNITION COIL 4 COIL 6 COIL 2 LEFT FRONT MARKER LAMP LEFT PARK/TURN SIGNAL LAMP NCA WIRE RIGHT FRONT MARKER LAMP RIGHT PARK/TURN SIGNAL LAMP RUN/ CRANK RELAY UNDERHOOD FUSE BLOCK CRNK (ON LEFT W/O ACTIVE BRAKE CONTROL W/ ACTIVE BRAKE CONTROL WINDSHIELD WIPER MOTOR WPR PCB WIPER RELAY

4.3L/6.6L 4.8L/5.3L/6.0L 4.8L/5.3L/6.0L AT GROUND TO LPG BYPASS SOLENOID) W/ 3 TANK VEHICLE KIT, LPG AUXILIARY BATTERY BATTERY BATTERY CURRENT SENSOR (EXCEPT 6.6L) BLK WIRE BLK/WHT WIRE CM FROM W/ 4 TANK VEHICLE KIT, LPG CONNECTOR GROUND TO LPG CONTROL MODULE, WAIT TO START LAMP) IGNITION COIL 6 IGNITION COIL 8 IGNITION IGNITION COIL 3 COIL 1 IGNITION IGNITION COIL 4 COIL 2 IGNITION IGNITION COIL 7 COIL 5 INDICATOR LEFT FRONT MARKER LAMP LEFT PARK/TURN SIGNAL LAMP LPG BYPASS SOLENOID LPG CONTROL MODULE LPG SECONDARY PRIMARY CONTROL FUEL LEVEL FUEL LEVEL MODULE SENSOR SENSOR NCA WIRE PRIMARY FUEL LEVEL SENSOR RUN/ CRNK RELAY UNDERHOOD FUSE BLOCK CRNK PUMP (ON LEFT PCB RELAY RELAY SIDE OF ENGINE COMPT) W/ 4 TANK COMPLETE VEHICLE KIT WAIT TO WINDSHIELD WIPER MOTOR WPR PCB WIPER WIPER RELAY HI DIODE DIODE

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

4.3L 4.3L/5.3L 4.8L 6.0L 5.3L W/ HD TRUCK TRAILER W/O BACKUP ALARM 6.6L 6.6L 6.6L BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BREAKOUT) CNG CONTROL MODULE CONNECTOR BREAKOUT) CONTROL SOLENOID VALVE ASSEMBLY COOLANT FUEL HEATER HEATER COOLANT HEATER FUEL PUMP ENGINE CONTROL MODULE (ECM) EXCEPT 5.3L W/ HD TRUCK TRAILER 4.8L, 6.OL, 4.3L W/O HD TRUCK TRAILER EXCEPT 5.3L W/ HD TRUCK TRAILER, BACKUP ALARM EXHAUST GAS RECIRCULATION (EGR) VALVE SHIELD FUEL FILTER PRESSURE SWITCH FUEL PRESSURE REGULATOR 1 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PUMP, SENDER ASSEMBLY GLOW PLUG CONTROL MODULE (GPCM) INTAKE (BLUNT AIR CUT) VALVE SHIELD SHIELD LPG CUT OFF FUEL SOLENOID PUMP VALVE NCA WIRE REDUCTANT PUMP REDUCTANT REDUCTANT LINE HEATER TANK HEATER REDUCTANT SENSOR MODULE SECONDARY PRIMARY LPG PUMP LPG PUMP ASSEMBLY ASSEMBLY TRAILER CONNECTOR W/ 3 TANK COMPLETE VEHICLE KIT, LPG W/ 4 TANK COMPLETE VEHICLE KIT W/ CARGO 6.6L, EXCEPT 5.3L W/ HD TRUCK TRAILER, BACKUP ALARM W/ DEDICATED CNG W/ FUEL FIRED 6.6L AUXILIARY HEATER W/O DEDICATED CNG WHT WIRE WHT/ BLK WIRE

AUXILIARY HVAC CONTROL MODULE BLK WIRE CUTAWAY UPFITTER DOME LAMP DRIVER DOOR LATCH DRIVER DOOR LOCK SWITCH DRIVER OUTSIDE REARVIEW MIRROR DRIVER WINDOW SWITCH FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT DOME/ READING LAMPS NCA WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER DOOR LATCH PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW PASSENGER OUTSIDE SWITCH REARVIEW MIRROR REAR AUXILIARY HVAC CONTROL ASSEMBLY RIGHT LEFT SUNSHADE SUNSHADE RIGHT LEFT VANITY VANITY MIRROR MIRROR LAMP LAMP RV UPFITTER RV UPFITTER (NOT USED) SPLICE BLOCK TO FRONT DOME/ READING LAMPS (DIAGRAM 3 OF 4) W/ POWER W/O POWER MIRRORS, MIRRORS, WINDOWS WINDOWS W/ REAR A/C, FRONT VANITY MIRROR W/O W/ REAR A/C RV UPFITTER W/O RV UPFITTER W/ REAR A/C, RV UPFITTER W/ REAR A/C, RV UPFITTER, SWB PASSENGER W/O ELECTRONIC SIDE DOOR LOCK CONTROL W/O REAR A/C, FRONT VANITY MIRROR W/ CUTAWAY UPFITTER

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

19 CM FROM LEFT FRONT DOME FLUORESCENT WORK LAMP CONNECTOR) 30 CM FROM PASSENGER 5.3L W/O BACKUP ALARM AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY BLOWER MOTOR BLK WIRE BLK/WHT WIRE BREAKOUT) CARGO DOOR LATCH CARGO DOOR LOCK SWITCH CENTER HIGH MOUNTED STOP LAMP (CHMSL) DOME LAMP EXCEPT 5.3L EXCEPT 5.3L W/ BACKUP ALARM FUEL COOLANT PUMP HEATER COOLANT HEATER FUEL PUMP, SENDER ASSEMBLY LEFT REAR ACCESS PANEL FLUORESCENT WORK LAMP LEFT TAIL/STOP LEFT BACKUP TURN SIGNAL LAMP LAMP LICENSE LAMP MIDDLE DOME/ READING LAMPS NCA WIRE PASSENGER/CARGO, 4.3L/4.8L/6.0L REAR AUXILIARY HVAC CONTROL ASSEMBLY REAR DOME READING LAMPS RIGHT ACCESS PANEL FLUORESCENT WORK LAMP RIGHT BACKUP LAMP RIGHT REAR WINDOW DEFOGGER GRID RIGHT TAIL/STOP, TURN SIGNAL LAMP TRAILER CONNECTOR W/ AUXILIARY HEATER W/O REAR A/C W/ AUXILIARY HEATER, REAR A/C, REAR WINDOW DEFOGGER W/ CARGO 42 CM FROM LEFT FRONT SIDE FRONT ACCESS PANEL ACTUATOR) LAMPS W/ FUEL FIRED AUXILIARY HEATER W/ REAR A/C W/ REAR A/C, SWB W/ REAR W/O REAR WINDOW WINDOW DEFOGGER DEFOGGER W/ REAR WINDOW DEFOGGER W/ TRUCK TRAILER HD WIRING HARNESS W/ TRUCK W/O TRUCK TRAILER HD TRAILER HD WIRING WIRING HARNESS HARNESS W/O AUXILIARY HEATER, REAR A/C W/O ELECTRONIC SIDE DOOR LOCK CONTROL W/O REAR WINDOW DEFOGGER WHT WIRE

AUXILIARY HVAC CONTROL MODULE BLK WIRE CUTAWAY UPFITTER DOME LAMP DRIVER DOOR LATCH DRIVER DOOR LOCK SWITCH DRIVER OUTSIDE REARVIEW MIRROR DRIVER WINDOW SWITCH FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT DOME/ READING LAMPS NCA WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER DOOR LATCH PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW PASSENGER OUTSIDE SWITCH REARVIEW MIRROR REAR AUXILIARY HVAC CONTROL ASSEMBLY RIGHT LEFT SUNSHADE SUNSHADE RIGHT LEFT VANITY VANITY MIRROR MIRROR LAMP LAMP RV UPFITTER RV UPFITTER (NOT USED) SPLICE BLOCK W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ POWER MIRRORS, WINDOWS W/ REAR A/C W/O RV UPFITTER W/ REAR A/C, RV UPFITTER W/ REAR A/C, RV UPFITTER, SWB PASSENGER W/O ELECTRIC SIDE DOOR LOCK CONTROL W/O POWER MIRRORS, WINDOWS W/O REAR A/C, FRONT VANITY MIRROR W/ CUTAWAY UPFITTER

19 CM FROM LEFT FRONT DOME FLUORESCENT WORK LAMP CONNECTOR) 30 CM FROM PASSENGER 42 CM FROM LEFT FRONT SIDE FRONT ACCESS PANEL ACTUATOR) AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY BLOWER MOTOR BLK WIRE BLK/WHT WIRE BREAKOUT) CARGO DOOR LATCH CARGO DOOR LOCK SWITCH CENTER HIGH MOUNTED STOP LAMP (CHMSL) DOME LAMP ELECTRONIC BRAKE CONTROL MODULE (EBCM) FRONT CARGO FLUORESCENT WORK LAMP FUEL FILTER PRESSURE SWITCH LEFT LEFT REAR REAR WINDOW WINDOW DEFOGGER DEFOGGER GRID GRID LEFT REAR SIDE FRONT ACCESS PANEL ACTUATOR LEFT REAR SIDE REAR ACCESS PANEL ACTUATOR W/ AUXILIARY HEATER W/O REAR A/C LEFT TAIL/STOP LEFT BACKUP TURN SIGNAL LAMP LAMP LICENSE LAMP MIDDLE DOME/ READING LAMPS NCA WIRE REAR AUXILIARY HVAC CONTROL ASSEMBLY REAR CARGO FLUORESCENT WORK LAMP REAR DOME READING LAMPS RIGHT ACCESS PANEL FLUORESCENT WORK LAMP RIGHT BACKUP LAMP RIGHT PARK/TURN SIGNAL LAMP RIGHT REAR WINDOW DEFOGGER GRID RIGHT SIDE FRONT ACCESS PANEL ACTUATOR RIGHT TAIL/STOP, TURN SIGNAL LAMP SWING OUT REAR DOOR WINDOW STATIONARY REAR DOOR WINDOW W/ AUXILIARY HEATER, REAR A/C W/ AUXILIARY HEATER, REAR A/C, REAR WINDOW DEFOGGER W/ CARGO LAMPS W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ REAR A/C W/ REAR A/C, SWB W/ REAR WINDOW DEFOGGER W/O ACTIVE BRAKE CONTROL W/ ACTIVE BRAKE CONTROL W/O AUXILIARY HEATER, REAR A/C W/O ELECTRIC SIDE DOOR LOCK CONTROL W/O REAR WINDOW DEFOGGER WHT WIRE