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

BLK WIRE CRANK FUSE 27 CRANK VOLT DK GRN WIRE ENG 1 FUSE 23 FUSIBLE LINK 2 GENERATOR HOT AT ALL TIMES IGN A FUSE 49 IGN B FUSE 52 IGNITION SWITCH LEFT BATTERY LOCK PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMPT, ON LEFT INNER FENDER) PPL RED WIRE RED/BLK WIRE RUN WIRE STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY 61 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) YEL WIRE YEL/BLK WIRE

BATTERY BLK WIRE CRANK FUSE 27 CRANK VOLT DK GRN WIRE ENG 1 FUSE 23 ENGINE CONTROL MODULE (ECM) (ON LEFT FRAME RAIL) FUSIBLE LINK 2 GENERATOR HOT AT ALL TIMES IGN A FUSE 49 IGN B FUSE 52 IGNITION SWITCH LOCK PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/BLK WIRE RUN WIRE SECONDARY BATTERY STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY 61 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) UNDERHOOD JUNCTION BLOCK YEL WIRE YEL/BLK WIRE

A/T INPUT SHAFT SPEED ACCESSORY VOLT AT ISS HI SIG BLK WIRE BLK/WHT WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE ECM/TCM GLOW PLUG CNTRL MDL IGN 1 FUSE 38 FOH/ECM TCM BATT FUSE 2 GMLAN DATA (+) VSS LOW PC SOL LOW PPL GMLAN DATA (-) 2-3 SHIFT SOL GMLAN DATA (-) GMLAN DATA (+) TR SW P SIG PC SOL HI VSS HI SIG STOP LMP VOLT GRY WIRE HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN ACC RUN AND START HOT IN RUN OR START IGN 0 FUSE 6 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE P/N PARK/NEUTRAL POSITION (PNP) SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE PPL REAR HI SIG GMLAN DATA (+) GMLAN DATA (-) RED/WHT WIRE SENSOR (A/T ISS) (LEFT SIDE OF TRANSMISSION STOP LAMP FUSE 7 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) STOP/CHMSL FUSE 8 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TBC/TCM ACCY FUSE 46 TFP SW B SIG TFT SENS SIG TR SW A SIG LOW REF IGN 1 VOLT BATTERY TFP SW C SIG TR SW B SIG TR SW C SIG TFP SW A SIG PNK WIRE TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (RIGHT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 BATTERY B+ SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) CARGO DR UNLCK FUSE 33 CARGO DR UNLCK PCB RELAY CHIME MODULE (BEHIND LEFT CENTER OF DASH) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRV DR UNLCK FUSE 36 DRVR DR UNLCK PCB RELAY FRT DR LCK FUSE 31 FRT PASS DR UNLCK FUSE 34 FRT REAR PASS DR UNLCK PCB FTR REAR DR LCK PCB GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) LEFT REAR SIDE DOOR JAM SWITCH (W/ HINGED DOOR) (AT LEFT "B" PILLAR) LIFTGATE AJAR SW SIG LO SPD GMLAN SERIAL DATA LO SPD SERIAL DATA LT BLU WIRE LT GRN WIRE ORG/BLK WIRE PNK/BLK WIRE RADIO REAR DR LCK FUSE 32 REAR OPEN SW REAR PASS DR UNLCK FUSE 35 RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (BEHIND CENTER OF DASH) RFA/TPM FUSE 21 RIGHT REAR SIDE DOOR JAM SWITCH (W/ CARGO PASSENGER) (AT RIGHT "B" PILLAR) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE W/ COMMERCIAL TRADESMAN W/ HINGED DOOR W/O COMMERCIAL TRADESMAN YEL WIRE YEL/BLK WIRE

BLK WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE BRN/WHT WIRE DIMMING CTRL DK BLU WIRE HOT AT ALL TIMES HOT W/ RUN RELAY HVAC 2 FUSE 13 ORG/ WIRE PROVISIONAL REAR BLWR FUSE 29 RED/WHT WIRE WHT WIRE

A/C REFRIGERANT PRESSURE SENSOR ACC SER DATA IGN VOLT BATT POS VOLT PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) ANTI-LOCK BRAKES SYSTEM BANK 1 SENSOR 2 BANK 2 SENSOR 2 BLK WIRE BLK/WHT WIRE BREAKOUT) BRK SW FUSE 32 BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 54 ECM IGN FUSE 48 ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GMLAN DATA- GMLAN DATA+ APP SENS 1 SIG LOW REF LOW REF APP SENS 2 SIG GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY 69 ENERGIZED IAT SENS SIG LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF SENS SIG NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK (OR PNK) 5 6 7 WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 WIRE PNK WIRE PPL PPL FUEL LEVEL SENS PPL LOW REF PRESS SENS SIG PPL/WHT WIRE PRESS SENS SIG LOW REF PWR/TRN RLY CTRL RED/WHT WIRE RELAY CTRL START RLY CTRL STARTING/CHARGING SYSTEM STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VSS WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

4.8L/6.0L 5.3L BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH RLY CTRL CNSTR VENT SOL FUSE 17 COMPT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM PWR/TRN FUSE 50 ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) EVAP SOL CTRL EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID (NEAR FRONT OF FUEL TANK) EVEN IGN/ INJ FUSE 52 FUEL PUMP RELAY 72 (4.8L/6.0L) FUEL/PUMP FUSE 2 GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL IC 7 CTRL IC 8 CTRL IGN INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF/ CNSTR VENT FUSE 49 MALFUNCTION INDICATOR LAMP MIL CTRL ODD IGN/INJ FUSE 55 ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 5 6 7 (OR PNK) WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK PNK PPL PPL 15 16 17 18 19 20 21 22 23 24 WIRE PNK PPL 2 3 4 WIRE PNK WIRE PPL PPL/WHT WIRE PWR/TRN RELAY 76 RED WIRE RED/WHT WIRE SNSR 1 FUSE 46 SNSR 2 FUSE 56 TOS SIG TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE WHT WIRE YEL WIRE

& IGNITION COIL/MODULE 7) 1 2 3 PNK WIRE 1 2 3 PPL BARE BLK WIRE BLUNT CUT) BRN WIRE COMPUTER DATA DK GRN WIRE DK GRN/WHT WIRE FCSM BATT FUSE 15 FSCM IGN FUSE 11 GMLAN DATA GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY 69 ENERGIZED IGN VOLT IGNITION COIL/MODULE 1 IGNITION COIL/MODULE 3 IGNITION COIL/MODULE 5 LINES SYSTEM LOW REF LT BLU WIRE NCA WIRE ORG/ WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK PNK PPL PPL 15 16 17 18 19 20 21 22 23 24 WIRE PNK WIRE POWER DISTRIBUTION PPL PPL 16 17 18 PUMP CTRL RED WIRE RED/WHT WIRE RELAY CTRL SENS SIG SERIAL DATA SPARK PLUG SYSTEM TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)

A/C REFRIGERANT PRESSURE SENSOR ACC SER DATA IGN VOLT BATT POS VOLT PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) ANTI-LOCK BRAKES SYSTEM BANK 1 SENSOR 2 BANK 2 SENSOR 2 BLK WIRE BLK/WHT WIRE BREAKOUT) BRK SW FUSE 32 BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 54 ECM IGN FUSE 48 ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GMLAN DATA- GMLAN DATA+ APP SENS 1 SIG LOW REF LOW REF APP SENS 2 SIG GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY 69 ENERGIZED IAT SENS SIG LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF SENS SIG NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK (OR PNK) 5 6 7 WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 WIRE PNK WIRE PPL PPL FUEL LEVEL SENS PPL LOW REF PRESS SENS SIG PPL/WHT WIRE PRESS SENS SIG LOW REF PWR/TRN RLY CTRL RED/WHT WIRE RELAY CTRL START RLY CTRL STARTING/CHARGING SYSTEM STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VSS WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

4.8L/6.0L 5.3L BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH RLY CTRL CNSTR VENT SOL FUSE 17 COMPT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM PWR/TRN FUSE 50 ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) EVAP SOL CTRL EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID (NEAR FRONT OF FUEL TANK) EVEN IGN/ INJ FUSE 52 FUEL PUMP RELAY 72 (4.8L/6.0L) FUEL/PUMP FUSE 2 GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL IC 7 CTRL IC 8 CTRL IGN INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF/ CNSTR VENT FUSE 49 MALFUNCTION INDICATOR LAMP MIL CTRL ODD IGN/INJ FUSE 55 ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 5 6 7 (OR PNK) WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK PNK PPL PPL 15 16 17 18 19 20 21 22 23 24 WIRE PNK PPL 2 3 4 WIRE PNK WIRE PPL PPL/WHT WIRE PWR/TRN RELAY 76 RED WIRE RED/WHT WIRE SNSR 1 FUSE 46 SNSR 2 FUSE 56 TOS SIG TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE WHT WIRE YEL WIRE