Chevrolet Chevy Express G2500 (1996-2012) hot at all times Wiring diagrams

AUXILIARY 1 FUSE 32 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO CARGO DOOR LATCH ASSEMBLY CTSY CTSY LPS SUPPLY BATTERY DK BLU/WHT WIRE DOME DOME DEFEAT DOME HNDL DOOR OPEN SW SIG REAR DOOR AJAR CTSY LAMPS ON SIG LF DOOR SW SIG DRIVER DOOR LATCH ASSEMBLY FL WORK LMP SIG FL WORK LMP CTRL GRY/BLK WIRE HEADLAMP AND PANEL DIMMER SWITCH HNDL HOT AT ALL TIMES LEFT REAR DOOR JAMB SWITCH LT GRN WIRE NOT USED ORG/ WIRE PASSENGER DOOR LATCH ASSEMBLY POWER PPL PPL DEFEAT SW SIG REAR DOME LAMP RED WIRE RED/WHT WIRE RIGHT REAR DOOR JAMB SWITCH TAN WIRE TBC 2 FUSE 18 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ POWER DOOR LOCKS W/O POWER DOOR LOCKS YEL/BLK WIRE

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

BLK WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP STOP LAMP SUPPLY VOLTAGE CRUISE CONTROL SYSTEM DIESEL DK BLU WIRE DK BLU/WHT WIRE DK DK DK GRN WIRE DK GRN/WHT WIRE DRIVER'S OUTSIDE REAR VIEW MIRROR DRL ON/OFF SIG DRV PWR TRN MIR FUSE 14 FRONT TURN SIGNAL LAMP SUPPLY VOLTAGE FRT PRK FUSE 22 GRN WIRE H.D. W/ GAS EARLY PRODUCTION HAZARD SWITCH HEAD OFF HEADLAMP AND PANEL DIMMER SWITCH HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT LEFT TURN SIGNAL IND LOGIC LEFT TURN SIGNAL LAMP LR PKR FUSE 18 LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE NCA WIRE NOT USED 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 WIRE PROVISIONAL RED/WHT WIRE RIGHT RIGHT TURN SIGNAL IND RIGHT TURN SIGNAL LAMP RR PKR FUSE 20 SPLICE PACK STOP/ CHMSL FUSE 8 SUPPLEMENTAL RESTRAINTS SYSTEM 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

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

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

13 14 PNK WIRE 15 16 17 18 19 20 21 22 PPL 22 23 PNK WIRE 5.3L W/ CA EMISSONS OTHER BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (AT LEFT FRONT OF ENGINE) ENGINE OIL LEVEL SWITCH (RIGHT SIDE OF OIL PAN) FUEL PUMP FUSE 12 FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GAS PASS/CARGO HEAVY DUTY (W/O HD TRUCK TRAILER WIRING) GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (IN EXH PIPE, BACK OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (IN EXH PIPE, BACK OF CAT CONVERTER) HOT AT ALL TIMES KNOCK SENSOR 1 (BELOW FRONT OF INTAKE MANIFOLD) KNOCK SENSOR 2 (BELOW REAR OF INTAKE MANIFOLD) LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE OTHER PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK 1 2 3 4 5 WIRE PNK PNK 28 29 WIRE PNK PNK 6 7 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL PPL PPL/WHT WIRE TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

16 17 18 19 20 21 22 23 PPL 21 22 23 24 25 27 26 28 PPL 24 25 26 PNK WIRE 29 30 31 PNK WIRE AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE CAN VENT FUSE 34 CHMSL VLT CRUISE CONTROL SYSTEM CRUISE ON SW DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN IGN 1 VLT LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK 1 2 3 4 5 6 WIRE PNK 7 8 WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE RES/ACCEL SET/COAST SIDE OF TRANSMISSION) SIGNAL TAC MTR CNTL TAC MTR CNTL 1 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR 1 THROTTLE POSITION SENSOR 2 TPS 1 SIG TPS 2 SIG UART SER DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE