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

12 CM FROM LEFT FRONT DOME FLUORESCENT WORK LAMP CONNECTOR) AUXILIARY 1 FUSE 32 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO DOOR LATCH ASSEMBLY CTSY CTSY LP RELAY 26 CTSY LP/ SEO FUSE 3 CTSY LPS SUPPLY BATTERY DK BLU WIRE DK BLU/WHT WIRE DOME DOME DEFEAT DOME FLOUR- ESCENT FUSE 2 DOME FLUORESCENT WORK LAMP 1 DOME FLUORESCENT WORK LAMP 2 DOME FLUORESCENT WORK LAMP RELAY (AT LEFT "B" PILLAR) DOME HNDL DOOR OPEN SW SIG REAR DOOR AJAR CTSY LAMPS ON SIG REAR DOOR SW SIG DRIVER DOOR LATCH ASSEMBLY FL DOME LP SIG FL DOME RLY CTRL GRY/BLK WIRE HEADLAMP AND PANEL DIMMER SWITCH HNDL HOT AT ALL TIMES LEFT FRONT DOME FLUORESCENT WORK LAMP LEFT REAR DOME FLUORESCENT WORK LAMP LEFT REAR DOOR JAMB SWITCH LEFT VANITY MIRROR LAMP LT GRN WIRE NOT USED ORG/ WIRE PASSENGER DOOR LATCH ASSEMBLY POWER PPL PPL DEFEAT SW SIG PROVISIONAL REAR FUSE BLOCK (ON LEFT "B" PILLAR) RED WIRE RED/WHT WIRE RIGHT DOME FLUORESCENT WORK LAMP RIGHT REAR DOOR JAMB SWITCH RIGHT VANITY MIRROR LAMP TAN WIRE TBC 2 FUSE 18 UNDERHOOD LAMP VANITY MIRROR LAMP CONNECTOR BREAKOUT) WHT WIRE YEL/BLK WIRE

330 OHMS BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BRN WIRE BTSI BCK/UP FUSE 36 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSE BLOCK- UNDERHOOD (LEFT SIDE OF ENGINE COMPARTMENT) FUSE BLOCK- UNDERHOOD (LEFT SIDE OF ENGINE COMPARTMENT) RT DRL/ TURN FUSE 9 GRN WIRE GROUND HAZRD FUSE 14 HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LT BLU WIRE LT DRL/ TURN FUSE 10 LT REAR STOP/ TRN FUSE 4 MARKER LAMP (LF) MARKER LAMP (RF) NOT USED PARK/ TURN SIGNAL LAMP (LF) PARK/ TURN SIGNAL LAMP-RF PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE RED WIRE RED/WHT WIRE RESISTOR RT REAR STOP/ TRN FUSE 6 STOP LAMP FUSE 7 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TRAILER AUXILIARY SUPPLY VOLTAGE TRAILER BACKUP LAMPS SUPPLY VOLTAGE TRAILER WIRING (BLUNT CUT) TRLR BCK/UP FUSE 5 TRLR FUSE 13 TRLR FUSE 50 WHT WIRE YEL WIRE YEL/BLK WIRE

ASSEMBLY BREAKOUT) BACKUP LIGHTS CIRCUIT BLK WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP CHMSL/ STOP LAMP SUPPLY VOLTAGE CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER'S OUTSIDE REAR VIEW MIRROR DRV PWR TRN MIR FUSE 14 FRONT TURN SIGNAL LAMP SUPPLY VOLTAGE FRT PRK FUSE 22 FUSE BLOCK- BODY (UNDER LEFT FRONT SEAT) FUSE BLOCK- BODY (UNDER LEFT FRONT SEAT) STOP/ CHMSL FUSE 8 GRN WIRE H.D. W/ GAS EARLY PRODUCTION HAZARD SWITCH HEAD HEADLAMP AND PANEL DIMMER SWITCH HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT LEFT TURN SIGNAL IND LOGIC LEFT TURN SIGNAL LAMP LICENSE LAMP LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE LT REAR PARK FUSE 18 LT REAR STOP/ TURN FUSE 3 NCA WIRE NOT USED OFF PARK PARK LAMP RELAY 29 PARK LAMP RLY CTRL HAZARD SW SIG DRL LOW CONTROL PARK LAMP SW ON SIG PASS TRN MIR FUSE 19 PASSENGER'S OUTSIDE REAR VIEW MIRROR PNK 8 9 WIRE PNK WIRE PROVISIONAL RED/WHT WIRE RIGHT RIGHT TURN SIGNAL IND RIGHT TURN SIGNAL LAMP RT REAR PARK FUSE 20 RT REAR STOP/ TURN FUSE 6 SPLICE PACK SUPPLEMENTAL RESTRAINTS SYSTEM TAIL/STOP, TURN SIGNAL LAMP (LEFT) TAIL/STOP, TURN SIGNAL LAMP (RIGHT) TRAILER WIRING (BLUNT CUT) TRLR PRK FUSE 21 TURN SIGNAL SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH TURN SIGNAL/HAZARD FLASHER MODULE (BEHIND LEFT CENTER OF DASH) UPFTR PRK LAMPS FUSE 16 W/ OUTSIDE REAR VIEW MIRROR TURN SIGNAL INDICATORS WHT WIRE YEL WIRE YEL/BLK WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BRN WIRE BTSI BCK/UP FUSE 36 DK BLU WIRE DK DK LT DK GRN WIRE FUSE BLOCK- UNDERHOOD (ON LEFT SIDE OF ENGINE COMPARTMENT) FUSE BLOCK- UNDERHOOD (ON LEFT SIDE OF ENGINE COMPARTMENT) RT DRL/ TURN FUSE 9 GRN WIRE GROUND HAZRD FUSE 14 HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LT BLU WIRE LT DRL/ TURN FUSE 10 LT REAR STOP/ TRN FUSE 3 TRLR STOP/ TRN FUSE 17 LT GRN WIRE MARKER LAMP (LF) MARKER LAMP (RF) ORG/ WIRE PARK/ TURN SIGNAL LAMP (LF) PARK/ TURN SIGNAL LAMP-RF PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK 8 9 WIRE PNK WIRE RED WIRE RED/WHT WIRE RT REAR STOP/ TRN FUSE 4 STOP LAMP FUSE 7 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TRAILER AUXILIARY SUPPLY VOLTAGE TRAILER BACKUP LAMPS SUPPLY VOLTAGE TRAILER PARK LAMPS SUPPLY VOLTAGE TRAILER STOP/ TURN RELAY- LEFT TRAILER STOP/ TURN RELAY- RIGHT TRAILER WIRING (BLUNT CUT) TRLR BCK/UP FUSE 5 TRLR FUSE 13 TRLR FUSE 50 WHT WIRE YEL 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

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

BANK 1 SENSOR 1 BANK 1 SENSOR 2 BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLUNT CUT) BRN WIRE BTSI/BU FUSE 36 SPARE FUSE 35 CRUISE CONTROL MODULE (IF EQUIPPED) CTSY LP RELAY (RV/UPFITTER) CTSY LP/SEO FUSE 3 CUTAWAY DK GRN WIRE FR PRK FUSE 22 FROM BODY FUSE BLOCK (AUXILIARY 2 FUSE 33) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (IGN A FUSE 49) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (IGN B, FUSE 52) (DIAGRAM 2 OF 6) FUSE 39 FUSE 40 HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR IGNITION SWITCH INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (HEAVY DUTY) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSIDE REARVIEW MIRROR (W/ TEMP DISPLAY) BODY CONTROL MODULE (BCM) ISRV FUSE 26 LEFT FRONT MARKER LAMP LEFT FRONT PARK/TURN SIGNAL LAMP LICENSE LAMP LOCK LOCK OFF LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OFF ORG/ WIRE PARK PARK LP RELAY PARK/ NEUTRAL POSITION (PNP) SWITCH PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (PCM) RED/BLK WIRE REVERSE RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/TURN SIGNAL LAMP RIGHT TAIL/STOP, TURN SIGNAL LAMP LEFT TAIL/STOP, TURN SIGNAL LAMP RIGHT TAILLAMP ASSEMBLY LEFT TAILLAMP ASSEMBLY RR PRK FUSE 20 LR PRK FUSE 18 RUN WIRE SIR FUSE 37 SPARE FUSE 25 STEERING WHEEL SPEED/ POSITION SENSOR STOP LAMP SWITCH (BLUNT CUT) (NOT USED) TBC IGN 1 FUSE 24 THROTTLE CONTROL ACTUATOR MODULE TO BODY FUSE BLOCK (AUXILIARY 1 FUSE 32) (DIAGRAM 5 OF 6) TO BODY FUSE BLOCK (BRKS FUSE 11) (DIAGRAM 5 OF 6) TO UNDERHOOD FUSE BLOCK (CRANK FUSE 27) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (ENG 2 FUSE 21) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (IGN O FUSE 6) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (TBC ACC FUSE 46) (DIAGRAM 4 OF 6) TRAILER WIRING TRAILER WIRING CUTAWAY TRLR BU FUSE 5 BTSI FUSE 28 TRLR PRK FUSE 21 UPFTR PRK FUSE 16 UNDERHOOD FUSE BLOCK W/ ACTIVE HANDLING W/O ACTIVE HANDLING WHT WIRE YEL WIRE

4.3L A/C RELAY AUTOMATIC TRANSMISSION BODY CONTROL MODULE (BCM) BRN WIRE CRANK FUSE 27 CRUISE CONTROL ON/OFF SWITCH ENG 1 FUSE 23 ENG 2 FUSE 21 EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID EXCEPT 4.3L 4.3L FR WPR FUSE 47 FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM UNDERHOOD FUSE BLOCK (SIR FUSE 37) (DIAGRAM 3 OF 6) FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 6 FUEL INJECTOR 6 FUEL INJECTOR 7 (EXCEPT 4.3L) FUEL INJECTOR 8 (EXCEPT 4.3L) IGN 0 FUSE 6 IGN E FUSE 22 IGNITION COIL IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 5 IGNITION COIL 7 IGNITION COIL 8 IGNITION COIL 4 IGNITION COIL 6 IGNITION COIL MODULE INSTRUMENT PANEL CLUSTER MASS AIR FLOW (MAF SENSOR) PARK/ NEUTRAL POSITION (PNP) SWITCH PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) PPL STOP LAMP SWITCH TBC ACC FUSE 46 TURN SIGNAL SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH WHT WIRE WINDSHIELD WIPER MOTOR 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

BLK WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN/WHT WIRE DEFOGGER SYSTEM DK BLU/WHT WIRE DRIVER OUTSIDE REARVIEW MIRROR (IN DRIVER DOOR) DRIVER PASSENGER EXTERIOR LIGHTS DEFOGGER SYSTEM SYSTEM HOT AT ALL TIMES LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE OSRVM SW FUSE 9 OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR (IN RIGHT FRONT PASSENGER DOOR) PPL/WHT WIRE RED/WHT WIRE RL (+) UP DN UP DN UP UP/DN WHT WIRE YEL WIRE