Chevrolet Chevy Express H1500 (2003-2012) blk/wht Wiring diagrams

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

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

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

12 8 17 11 SWITCH ON SIG PARK LAMPS SIG SWITCH OFF SIG AMBIENT SENS SIG 25 18 HEADLAMP SW SIG HEADLAMP LO SIG AMBIENT LIGHT SENSOR (ON TOP OF INSTRUMENT PANEL) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE DRL 1 FUSE 67 DRL 2 FUSE 66 DRL PCB RELAY FTP FUSIBLE LINK 2 HEAD HEAD 1 8 HEADLAMP, PANEL DIMMER SWITCH HIGH BEAM IND HIGH BEAM PCB RELAY HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY 15 ENERGIZED IGN IPC FUSE 10 LEFT HIGH BEAM HEADLAMP LEFT HEADLAMP LEFT LOW BEAM HEADLAMP LO BEAM RLY CTRL LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW BEAM PCB RELAY LT BLU WIRE LT GRN/BLK WIRE LT LO BEAM FUSE 53 OFF AUTO PARK PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PARK BRK SW SIG PNK WIRE PNK/WHT WIRE PPL PPL 23 16 LO BEAM CTRL HI BEAM RLY CTRL RED WIRE RIGHT HEADLAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HI BEAM FUSE 52 RT LO LT HI BEAM BEAM FUSE 54 FUSE 51 SERIAL DATA SYSTEM TAN/WHT WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ CHROME GRILLE W/ CHROME W/O CHROME GRILLE GRILLE W/O CHROME GRILLE WHT WIRE YEL WIRE

23 3 SERIAL DATA BELT SW 7 63 5 VOLT REF LOW REF ABS IND. AIR BAG IND BATTERY IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER RIGHT SIDE OF DASH) BRAKE IND BRAKE WARNING IND CONTROL BATT VOLTAGE GROUND GROUND IGN VOLTAGE SERIAL DATA BRN WIRE BRN/WHT WIRE CHECK GAGES IND. CLASS 2 (BCM) CLASS 2 (EBCM) CLASS 2 (PCM) CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM CRUISE IND DIMMING DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRL IND ECT SENS ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMP ENGINE COOLANT TEMPERATURE SENSOR (LEFT SIDE OF ENGINE) ENGINE OIL LEVEL SWITCH (4.8L, 5.3L, 6.0L) (RIGHT SIDE OF OIL PAN) ENGINE OIL PRESSURE SENSOR (TOP REAR OF ENGINE) FUEL GAUGE FUEL PUMP/ SENDER ASSEMBLY (IN FUEL TANK) GROUND GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START IGN IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN VOLT SIG IGN E FUSE 22 ILLUMINATION (6 BULBS) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER IPC FUSE 31 LCD DISPLAY 000000 TRIP LEFT FRONT SEAT BELT SWITCH (IN LEFT FRONT SEAT BELT LATCH) LEFT TURN IND LH FRT TURN SIG SUP VOLT LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION IND LAMP MIL CTRL MIL SIGNAL OFF OIL PRESS OIL PRESS (RIGHT REAR OF ENGINE) OIL PRESSURE OIL PRESSURE IND P R N D 3 2 1 PARK BRAKE PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PNK WIRE POWER BRAKE BOOSTER FLUID PRESSURE ALARM SWITCH (IN BOOSTER INLET HOSE) POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL FUEL LEVEL RED/WHT WIRE RH FRT TURN SIG SUP VOLT RIGHT TURN IND SEAT BELT IND SECURITY IND SERIAL DATA SPEEDOMETER SPLICE PACK TAN WIRE TAN/WHT WIRE TOW/HAUL IND TRACTION CONTROL IND'S TRIP RESET SWITCH TRIP RESET SWN SIGNAL GROUND UNDERHOOD FUSE BLOCK (IN ENGINE COMPT, ATTACHED TO LEFT FRONT FENDER) VOLTMETER W/ PWR SEAT W/O PWR SEAT YEL WIRE

11 12 IPL DIMMER SW SIG IP DIMMING VOLT REF 2 15 HEAD 8 17 PARK LAMPS SIG HEADLAMPS OFF SIG AUXILIARY BLOWER MOTOR SWITCH BCM 1 FUSE 59 BCM 2 FUSE 58 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONNECTOR) PNK WIRE CONTROL DK GRN WIRE DRIVER DOOR LOCK SWITCH DRIVER INFORMATION CENTER (DIC) SWITCH DRIVER WINDOW SWITCH FRONT AUXILIARY HVAC CONTROL ASSEMBLY HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) HVAC CONTROL ASSEMBLY IN FRONT HEADLINER HARNESS, 21 CM INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (W/ MANUAL SUPPRESSION) IPL DIMMING CTRL LEFT STEERING WHEEL CONTROL SWITCH LT BLU WIRE OFF AUTO PARK ORG/WHT WIRE PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW SWITCH PNK CONTROL PNK WIRE PNK PNK W/O REDUNDANT RADIO STEERING WHEEL WIRE PNK WIRE RADIO REAR AUXILIARY HVAC CONTROL ASSEMBLY SPLICE BLOCK RED WIRE RED/WHT WIRE RIGHT STEERING WHEEL CONTROL SWITCH SPLICE BLOCK STR/WHL/ SNSR TAN WIRE TAN/BLK WIRE TOW/HAUL SWITCH TRACTION CONTROL SWITCH (TCS) (W/ ACTIVE BRAKE CONTROL) W/ AUTOMATIC ELECTRONIC CRUISE CONTROL W/ AUXILIARY HEATER W/O REAR A/C W/ ELECTRIC SIDE DOOR LOCK W/ POWER OPERATED WINDOW (W/ POWER MIRRORS, POWER WINDOWS) W/ REAR W/O REAR AUXILIARY AUXILIARY CONTROLS CONTROLS W/ REDUNDANT RADIO STEERING WHEEL W/ RV UPFITTER W/O RADIO PROVISIONS W/O RV UPFITTER WHT WIRE YEL WIRE

1 2 3 4 BATTERY B+ SERIAL DATA PNK WIRE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO DOOR LATCH ASSEMBLY CARGO UNLK FUSE 5 CARGO UNLK RELAY 27 DK BLU WIRE DOOR LKS FUSE 15 DOOR LKS RELAY 30 DOOR LOCK CTRL UNLOCK CTRL DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR LOCK SWITCH DRV LKS FUSE 7 DRV UNLK RELAY 28 FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR LOCK SWITCH GROUND GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT REAR SIDE DOOR LOCK ACTUATOR LEFT SIDE DOOR CONTACT PLATE (LEFT "B" PILLAR) LT BLU WIRE LT GRN WIRE PASS UNLK RELAY 31 REAR CARGO DOOR LOCK SWITCH RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND CENTER OF DASH) RIGHT REAR SIDE DOOR LOCK ACTUATOR RIGHT SIDE DOOR CONTACT PLATE (RIGHT "B" PILLAR) SERIAL DATA SERIAL DATA UNLOCK RLY CTRL SW UNLOCK CTRL SW LOCK CTRL RELEASE RLY CTRL SPLICE SPLICE PACK TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) RFA FUSE 20 WHT WIRE

ANTENNA ANTENNA IN BLK WIRE BLK/WHT WIRE BLUNT CUT) CLASS 2 DATA COAX COMPUTER DATA LINES SYSTEM CUTAWAY UPFITTER DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER (IF EQUIPPED) LEFT REAR SPEAKER LF SPEAKER (+) LF SPEAKER (-) RR SPEAKER (-) RR SPEAKER (+) GROUND BATTERY LR SPEAKER + LR SPEAKER - RF SPEAKER - RF SPEAKER + LT BLU WIRE NOT USED ORG/ WIRE PASSENGER/ CARGO RADIO RADIO BAT FUSE 1 RED/WHT WIRE RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER (IF EQUIPPED) RIGHT REAR SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPTARTMENT) WHT WIRE

ANTENNA ANTENNA IN BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CLASS 2 DATA COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM DASH LMP DIM CNTRL LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER LEFT REAR SPEAKER LF SPEAKER (+) LF SPEAKER (-) RR SPEAKER (-) RR SPEAKER (+) GROUND BATTERY LT BLU WIRE LT GRN WIRE ORG/ WIRE PPL PPL REMOTE RAD VOLT PPL RSA SWITCH RADIO RADIO BAT FUSE 1 REAR SEAT AUDIO CONTROL RED/WHT WIRE REM RADIO SIG LR SPEAKER (+) LR SPEAKER (-) RF SPEAKER (-) RF SPEAKER (+) RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE

2500 2501 COMPUTER DATA LINES SYSTEM 28 27 43 44 66 46 HI SPD SER DATA (+) HI SPD SER DATA (-) AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION (EXCEPT 4.3L, 5.3L) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE BRAKE POS POS LOW SEN (-) (+) (-) (+) REF SIG BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRK B+ BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID FUEL TEM SIG BRAKE APPLY SEN SIG LOW REF GM LAN HI SPD GRY WIRE HI SPD SER DATA + INTERNAL MODE SWITCH (IMS) MODULE (TCM) PARK/NEUTRAL POSITION (PNP) SWITCH RED WIRE SOL CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL TRANSMISSION CONTROL MODULE (TCM) (6.6L:LEFT FRONT CORNER OF ENGINE COMPT) VALVE ASSEMBLY WHT WIRE YEL WIRE