Chevrolet Chevy Express G3500 (1996-2012) hot at all times Wiring diagrams

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

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

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

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

BLK WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) IGN VOLT BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE DK BLU WIRE DK GRN WIRE DRIVER WINDOW SWITCH HOT AT ALL TIMES LT BLU WIRE PASSENGER WINDOW SWITCH PWR WDO CIRCUIT BREAKER 2 RAP RELAY RIGHT DN SPLICE SPLICE BLOCK TAN WIRE UP DN UP DN LEFT WHT WIRE YEL 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

1 14 5 SERIAL DATA BRAKE WARN IND CTRL PASSENGER SEAT BELT IND 19 15 16 ALARM ENABLE SIG HAZARD SW LEFT SIG HAZARD SW RIGHT SIG 2 59 28 60 SERIAL DATA LH SEAT BELT SW LOW REF RH SEAT BELT SW 8 17 PARK LAMP SIGNAL HEADLAMP SW OFF SIG AIR BAG FUSE 28 AUTO OFF 3 8 BATTERY BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CHIME MODULE (W/O RADIO) (BEHIND LEFT CENTER OF DASH) CONNECTOR BREAKOUT) DATA LINK CONNECTOR (DLC) DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH FUSE 22 GROUND GRY WIRE GRY/BLK WIRE HAZARD SWITCH HEAD PARK HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES IGN SW IGNITION KEY SWITCH IGNITION SWITCH PNK WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR JAMB SWITCH (W/ LEFT REAR HINGED DOOR) (AT LEFT "B" PILLAR) LEFT TURN LOGIC LT BLU WIRE LT BLU/BLK WIRE OFF ORG/ WIRE PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PARK BRK SW SIG PASSENGER AIR BAG IND PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PASSENGER SEAT BELT BUCKLE (W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER) PASSENGER SEAT BELT IND PASSENGER SEAT BELT SWITCH PNK IGN VOLT WIRE PNK PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PPL RADIO RDO/CHIME FUSE 20 RED WIRE RED/WHT WIRE RIGHT REAR DOOR JAMB SWITCH (CARGO/ PASSENGER) (AT RIGHT "B" PILLAR) RIGHT TURN RUN WIRE SEAT BELT IND LOW OIL PRESSURE IND TIRE PRESSURE IND SERIAL DATA SPLICE BLOCK SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ MANUAL SUPPRESSION SWITCH W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER W/O RADIO WHT WIRE YEL WIRE YEL/BLK WIRE