Chevrolet Express G3500 (2013-2013) hot at all times Wiring diagrams

1 18 25 COURTESY LP CTRL COURTESY LP CTRL DEFEAT SW SIG 149 (OR 690) 16 17 DATA BUS+ DATA BUS- 20 CM FROM RIGHT SUNSHADE BREAKOUT) 2500 2501 COMPUTER DATA LINES SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) CARGO CARGO DOOR) CARGO/PASSENGER COURTESY LAMPS PROVISION RELAY COURTESY LP CTRL CTSY LP CTRL DK BLU WIRE DK BLU/WHT WIRE DOME DOME READING FL DOME RLY CTRL FRONT DOME/ READING LAMPS GRY WIRE GRY/BLK WIRE HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES LEFT OF HEADLINER) LEFT SUNSHADE (ON UPPER LIFTGATE AJAR SW SIG LOWER RIGHT "B" MIDDLE DOME/ READING LAMPS ORG/ WIRE PASSENGER PASSENGER COMPARTMENT FUSE BLOCK PASSENGER/CARGO W/O RV UPFITTER PNK/BLK WIRE PPL PROVISIONAL READING REAR CARGO DOOR LATCH ASSEMBLY (IN RIGHT REAR REAR DOME/ READING LAMPS (PASSENGER) DOME LAMP (CARGO) RED WIRE RIGHT SUNSHADE (ON UPPER RIGHT OF HEADLINER) SPLICE BLOCK TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THE ENGINE BLOCK) (4.3L: RIGHT REAR OF ENGINE) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD LAMP UPFITTER AUX 1 FUSE (W/ CUTAWAY, AMBULANCE, RV UPFITTERS) UPFTR CTSY LAMP FUSE W/ COMMERCIAL TRADESMAN SALES PACKAGE, CARGO LAMP W/ CUTAWAY W/ CUTAWAY, CARGO W/O RV UPFITTER W/ LEFT, RIGHT SUNSHADE MIRROR W/ RV UPFITTER W/ RV UPFITTER, LEFT, RIGHT SUNSHADE MIRROR W/O RV UPFITTER W/O RV W/ RV UPFITTER UPFITTER WHT WIRE YEL/BLK WIRE

16 CM FROM UNDERHOOD 4 SPEED A/T 6 SPEED A/T AUTOMATIC TRANSMISSION AUX STOP LAMP FUSE BLK WIRE BLK/WHT WIRE BREAKOUT TOWARDS INSTRUMENT PANEL CLUSTER) BREAKOUT) BRK SW FUSE BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CUTAWAY DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) EXCEPT 4.3L 4.3L HEAD PARK AUTO HEADLAMP, PANEL DIMMER HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY 15 ENERGIZED IGN INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE LEFT FRONT SIDE MARKER LAMP LEFT PARK/ TURN SIGNAL LAMP LEFT TURN IND LOGIC LT BLU WIRE LT BLU/WHT WIRE OFF PNK WIRE PROVISIONAL RIGHT RIGHT PARK/ FRONT SIDE TURN MARKER SIGNAL LAMP LAMP RIGHT TURN IND SER DATA STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) STOP LAMPS PCB RELAY SWITCH TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER OF ENGINE COMPT) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

12 8 17 11 SWITCH ON SIG PARK LAMPS SIG SWITCH OFF SIG AMBIENT SENS SIG 23 16 PPL LO BEAM CTRL HI BEAM RLY CTRL 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 HEAD LAMP HIGH BEAM RELAY HEADLAMP, PANEL DIMMER SWITCH HIGH BEAM IND 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 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 GRILLE W/O CHROME GRILLE W/O CHROME GRILLE WHT WIRE YEL WIRE

BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) GRN WIRE HORN ASSEMBLY (AT LEFT FRONT OF ENGINE COMPT) HORN FUSE 16 HORN RELAY CTRL HORN SWITCH (IN STEERING WHEEL) HORN/ WASH PCB RELAY HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) ORG/ WIRE TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)

6 7 8 9 PPL PNK WIRE ABS IND. AIR BAG IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRAKE IND BRN WIRE BRN/WHT WIRE CHARGE IND CMPS FUSE 19 COMPUTER DATA LINES SYSTEM CRUISE IND DIESEL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ENGINE COMPT) ENGINE CONTROLS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM ENGINE COOLANT TEMPERATURE GAUGE FRONT SEAT) FUEL GAUGE GMLAN SERIAL GRY/BLK WIRE HIGH BEAM IND HOT AT ALL TIMES HOT W/ RUN RELAY HOT W/ RUN/CRANK RELAY 15 ENERGIZED I/P CLUSTER FUSE 23 IGN VOLT IND CTRL IND LAMP (MIL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 10 LEFT TURN IND LIFTGATE AJAR SW SIG LF DOOR AJAR SW RR DOOR OPEN SW LR DOOR OPEN SW LOGIC LOW ENGINE OIL PRESSURE GAUGE LOW FUEL IND LOW OIL LOW STABILITY IND LT BLU WIRE LT GRN WIRE MALFUNCTION MIL CTRL NETWORK 3 ODOMETER PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PASS SEAT BELT PASSENGER SEAT BELT IND PNK WIRE PNK/BLK WIRE PPL PPL PNK WIRE PRESSURE IND PRND 321 RED/WHT WIRE RF DOOR AJAR SW RIGHT TURN IND SEAT BELT IND SECURITY IND SEO FUSE 27 SPEEDOMETER SUPPLEMENTAL RESTRAINTS SYSTEM SW SIG SWITCH SIG TAN/WHT WIRE TIRE PRESSURE IND TOW/HAUL IND TRACTION CONTROL IND UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF VOLTS GAUGE W/ BRAKE WARNING INDICATOR SYSTEM W/ ODOMETER SECURITY WIRING PROVISION (SEO) W/O ODOMETER SECURITY WIRING PROVISION (SEO) WAIT TO START IND WHT WIRE YEL WIRE YEL/BLK WIRE

BACKUP LAMPS CIRCUIT BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE DK BLU WIRE DK GRN WIRE EXCEPT 5.3L W/ BACKUP ALARM HOT AT ALL TIMES HOT W/ PRK LAMP LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LT GRN WIRE LT STOP/ TRN TRLR FUSE LT TRAILER TURN SIGNAL LAMP ORG/ WIRE RED WIRE RED/BLK WIRE RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY RT STOP/ TRN TRLR FUSE RT TRAILER TURN SIGNAL LAMP TRAILER CONNECTOR TRAILER PROVISION (BLUNT CUT) TRLR PRK LAMP FUSE TRLR WRG FUSE TRLR WRG FUSE 11 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT(OR BLK) WIRE YEL WIRE

6.0L (VIN B) 6.0L VIN G 6.0L VIN B 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 LT BLU/ WIRE BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BREAKOUT) BRK SENS SPLY BRK SW FUSE BRN WIRE CNG FUEL VEHICLE COMPUTER DATA LINES SYSTEM CUTAWAY LPG FUEL VEHICLE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE ECM IGN/ GLOW PLUG MDL IGN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT RADIATOR TEMPERATURE SENSOR FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL TANK) GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 15 ENERGIZED IAT SENS SIG LOW REF ECT SENS SIG LOW REF LOW REF PRESS SENS SIG PPL LT BLU WIRE LT BLU/ BLK WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MAF SENS SIG LOW REF ORG/BLK WIRE ORG/WHT WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PPL PPL FUEL LEVEL SENS 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 TOWARDS INSTRUMENT PANEL CLUSTER) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VSS W/ 3 TANK LPG FUEL VEHICLE W/ 4 TANK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH RLY CTRL CNSTR/ VENT/ SOL FUSE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM PWR/TRN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS IGNITION RELAY EVAP SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID (NEAR FRONT OF FUEL TANK) EVEN IGN/ INJ FUSE FLEX FUEL FUSE FUEL INJECTOR 2 FUEL INJECTOR 4 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 INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LT BLU WIRE LT BLU/BLK (OR BLK) WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MAF/ CNSTR VENT FUSE MALFUNCTION INDICATOR LAMP (MIL) MIL CTRL ODD IGN/INJ FUSE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK (OR RED) WIRE PNK PNK PNK PNK PNK PNK PNK 1 2 3 4 5 6 7 8 WIRE PNK PPL 2 3 4 WIRE PNK PPL PNK PNK PPL WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED/WHT WIRE SNSR 1 (PRE)/ CLS FUSE SNSR 2 (POST) FUSE TOS SIG TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ 3 TANK W/ 4 TANK WHT WIRE YEL WIRE

13 14 15 16 17 18 PNK WIRE BLK WIRE BRN WIRE DK GRN WIRE DK GRN/WHT WIRE FUEL PUMP RELAY GAS FUEL PUMP FUSE GRY WIRE HOT AT ALL TIMES IGNITION COIL 2 IGNITION COIL 4 IGNITION COIL 6 IGNITION COIL 8 LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MEGA FUSE NATURAL GAS REGULAR GAS NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK PNK 11 12 WIRE PNK PNK 3 4 WIRE PNK PNK 6 7 8 WIRE PNK PNK 8 9 WIRE PNK PPL 14 15 WIRE PNK PPL PNK 19 20 21 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE REAR LPG CUT-OFF SOLENOID VALVE SECONDARY FUEL PUMP RED WIRE RED/WHT WIRE REGULAR GAS W/ 3 TANK REGULAR GAS W/ 4 TANK SECONDARY LPG PUMP ASSEMBLY SIDE OF ENGINE COMPT) SPARK PLUG UNDERHOOD FUSE BLOCK (ON LEFT

BLK WIRE BLK/WHT WIRE BRAKE LO REF BRK SW FUSE 13 BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (ON FRONT OF ENGINE) COMPT) CRANKSHAFT POSITION (CKP) SENSOR (NEXT TO CRANKSHAFT PULLEY) DIESEL FUEL PUMP FUSE 24 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 19 ECM IGN/GLOW PLUG MDL IGN FUSE 30 ECM PWR/ TRN FUSE 45 EXHAUST GAS RECIRCULATION (EGR) TEMPERATURE SENSOR 2 EXHAUST GAS RECIRCULATION (EGR) VALVE (RIGHT SIDE OF ENGINE ABOVE 1 CYLINDER) FUEL FILTER PRESSURE SWITCH (TOP LEFT REAR SIDE OF ENGINE) FUEL HTR FUSE 71 FUEL INJECTOR 2 (ON LEFT SIDE OF ENGINE) FUEL INJECTOR 3 (ON RIGHT SIDE OF ENGINE) FUEL INJECTOR 4 (ON LEFT SIDE OF ENGINE) FUEL INJECTOR 5 (ON RIGHT SIDE OF ENGINE) FUEL INJECTOR 8 (ON LEFT SIDE OF ENGINE) FUEL PUMP RELAY GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY 15 ENERGIZED LOWER RIGHT FRONT OF ENGINE) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAF/ CNSTR FUSE 64 NCA WIRE ORG/BLK WIRE PNK 1 2 3 4 WIRE PNK 5 6 7 8 9 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL/WHT WIRE PWR/ TRN RELAY 49 RED/WHT WIRE SIG BRAKE SENS TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE WHT WIRE WHT/BLK WIRE YEL WIRE