Chevrolet Express G2500 (2013-2013) blk 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

12 CM FROM LEFT FRONT DOME FLUORESCENT WORK LAMP CONNECTOR) BLK WIRE BLU WIRE DK BLU/WHT WIRE DOME FLUORESCENT WORK LAMPS DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) FRONT CARGO FLUORESCENT WORK LAMP FUSE GRY WIRE GRY/BLK WIRE HARNESS, 7 CM FROM BREAKOUT FOR REAR FUSE BLOCK) LEFT FRONT ACCESS PANEL FLUORESCENT WORK LAMP LEFT REAR ACCESS PANEL FLUORESCENT WORK LAMP LEFT SLIDING DOOR AJAR SWITCH (W/ LEFT REAR HINGED DOOR) ORG/ WIRE PACKAGE, CARGO LAMP) DOME FLUORESCENT WORK LAMPS RELAY PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) REAR BODY FUSE BLOCK (ON LEFT "B" PILLAR) REAR CARGO FLUORESCENT WORK LAMP RED WIRE RIGHT ACCESS PANEL FLUORESCENT WORK LAMP RIGHT SLIDING DOOR AJAR SWITCH (CARGO/ PASSENGER) SPLICE BLOCK TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

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

24 39 31 16 LOW REF SENS SIG PPL 2759 1589 (OR 6049) 4.3L 4.8L/5.3L/6.0L 6.6L 2 3 44 43 DATA BUS(-) DATA BUS(+) 50 41 36 35 331 2705 4 30 SENS SIG 58 28 1589 2759 PPL 6 7 8 9 PPL PNK WIRE 7 8 PPL 9 10 PPL BLK WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE BRN WIRE CARGO DOOR LATCH ASSEMBLY (W/ CARGO/PASSENGER) (IN RIGHT REAR CARGO DOOR) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) SWITCH ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) GRY WIRE GRY/BLK WIRE ILLUMI- NATION LEFT SLIDING DOOR AJAR SWITCH (W/ LEFT REAR HINGED DOOR) LOW REF PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PERSON- ALIZATION VEHICLE INFO PNK WIRE PNK/BLK WIRE PPL PPL 2 3 RIGHT SLIDING DOOR AJAR SWITCH (W/ CARGO/PASSENGER) SENS SIG SENS SIG LOW REF SET/ RESET SWITCH SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP/ FUEL W/ BRAKE WARNING INDICATOR SYSTEM WATER IN-FUEL SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

4.3L 4.8L/5.3L/6.0L 6.6L 2 3 4.3L, 4.8L, 6.0L 5.3L (VIN G) 6.0L (VIN B) 7 8 PPL 9 10 PPL ALTERNATIVE FUEL TANK PRESSURE SENSOR BLK WIRE BRAKE BOOSTER FLUID FLOW ALARM SWITCH (IN POWER STEERING PUMP OUTLET HOSE) BRAKE BOOSTER FLUID PRESSURE ALARM SWITCH (IN POWER STEERING PUMP INLET HOSE) BRAKE FLUID LEVEL SWITCH (AT LEFT REAR OF ENGINE COMPT) BRAKE PRESSURE DIFFERENTIAL SWITCH (ON BRAKE VALVE, NEAR FRONT OF EBCM) BRN WIRE CNG CONTROL MODULE (6.0L(VIN B)) (FORWARD OF LEFT REAR SPRING ON FRAME) CNG FUEL VEHICLE ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH (ON LEFT SIDE OF OIL PAN) ENGINE OIL PRESSURE (EOP) SENSOR (EXCEPT 6.6L: ON TOP REAR OF ENGINE) FUEL LEVEL SENSOR (ON FUEL TANK) FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GRN WIRE GRY WIRE HEAVY DUTY LIGHT DUTY LOW REF LPG CONTROL MODULE (6.0L(VIN B)) (ON TANK CONTROL BOX) LPG FUEL VEHICLE W/ 3 TANK LPG FUEL VEHICLE W/ 4 TANK LT BLU/BLK WIRE PPL PPL 2 3 PPL FUEL PUMP RELAY SIG PPL SENSING PRESSING PRIMARY FUEL LEVEL SENSOR PRIMARY SIG FUEL SENDER RED WIRE SECONDARY FUEL LEVEL SENSOR SECONDARY SIG FUEL SENDER TAN WIRE TAN/WHT WIRE W/ BRAKE WARNING INDICATOR SYSTEM WHT 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 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) 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 BCM 2 ENGINE COMPT) FUSE HVAC CONTROL ASSEMBLY HVAC CONTROL PROCESSOR CONNECTOR BREAKOUT) IPL DIMMING CTRL LEFT STEERING WHEEL CONTROL SWITCH LT BLU WIRE OFF AUTO PARK ORG/WHT WIRE PASSENGER AIR BAG DISABLE SWITCH (W/ MANUAL SUPPRESSION) PASSENGER COMPARTMENT FUSE BLOCK 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 FUSE 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 RV UPFITTER WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LH AUDIO SIG (+) RH AUDIO SIG (+) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ LF MID OUT (+) RF MID OUT (+) 10 12 SERIAL DATA BUS (+) HI SPD GMLAN SERIAL DATA BUS(-) 2 1 8 LO REF VOICE SIG DRAIN WIRE HI SPD GMLAN BARE 6817 351 1957 1953 INTERIOR LIGHTS SYSTEM ANTENNA ANTENNA IN ANTI-LOCK BRAKES SYSTEM BARE BLK WIRE BLK/WHT WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN/WHT WIRE CAMERA SIG (-) CELLULAR PHONE, NAVIGATION ANTENNA COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES LED DIMMING CTRL GND LF MID OUT (-) RF MID OUT (-) LH AUDIO SIG + RH AUDIO SIG + LO REF LO SERIAL DATA LR MID OUT (+) RR MID OUT (+) LT BLU WIRE LT BLU/BLK WIRE NAVIGATION ANTENNA NAVIGATION SYSTEM ORG/ WIRE RADIO RDO/ CHIME FUSE 20 RED/WHT WIRE SPD SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE USB CABLE USB RECEPTACLE VOICE SIG W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE

ANTENNA ANTENNA IN ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CAMERA SIG + VOICE SIG PNK WIRE CAMERA SIG - LOW REF COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GND RF MID OUT (+) LF MID OUT (+) RR MID OUT (+) LR MID OUT (+) GRY WIRE HOT AT ALL TIMES LO REF LED DIMMING CTRL LO SERIAL DATA LT BLU WIRE LT BLU/BLK WIRE NAVIGATION ANTENNA NAVIGATION SYSTEM ORG/ WIRE PNK 11 12 WIRE PNK/BLK WIRE RADIO RDO/ CHIME FUSE 20 RED/WHT WIRE RF MID OUT (-) LF MID OUT (-) RR MID OUT (-) LR MID OUT (-) TAN WIRE USB CABLE USB RECEPTACLE VEHICLE SPD SIG VOICE SIG W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE

4 SPEED 6 SPEED A/T A/T 4.3L/ 5.3L 4.8L 6.0L 6.6L 6.6L 6.6L EXCEPT ABS MDL FUSE 2 ABS MTR FUSE 1 AMBULANCE UPFITTER) AUX PWR OUTLET FUSE 25 AUXILIARY BATTERY AUXILIARY GENERATOR BATTERY BCM 2 FUSE 58 BCM 1 FUSE 59 BCM 3 FUSE 26 BCM 7 FUSE 8 BCM 4 FUSE 9 BCM 5 FUSE 7 BCM 6 FUSE 72 BLK WIRE BLOWER MOTOR RESISTOR BODY CONTROL MODULE (BCM) BRN WIRE CENTER CONSOLE 2 ACCESSORY CENTER CONSOLE 1 ACCESSORY CIGAR LIGHTER RECEPTACLE CNSTR VENT SOL FUSE 56 CONTROL SOLENOID VALVE ASSEMBLY COOLANT HEATER (6.6L W/ AUXILIARY FUEL FIRED HEATER) DATA LINK CONNECTOR (DLC) ECM BATT FUSE 19 ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) EVAPORATIVE EMISSION (EVAP) VENT SOLENOID VALVE FCSM BATT FUSE 36 FOH MDL FUSE 35 FROM CMPS FUSE 19 (DIAGRAM 4 OF 5) FROM RUN FRT BLWR FUSE 74 FUEL PUMP CONTROL MODULE (5.3L) FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 (W/ DUAL GENERATOR GENERATOR GLOW PLUG CONTROL MODULE (GPCM) INSTRUMENT PANEL CLUSTER (IPC) (W/ ODOMETER SECURITY WIRING PROVISION (SEO)) INTAKE AIR HEATER (IAH) LTR/DLC FUSE 73 NCA WIRE PASSENGER COMPARTMENT FUSE BLOCK POWER RECEPTACLE POWER RECEPTACLE PROVISION IGNITION POWER PROVISION RELAY REAR PARKING ASSIST CONTROL MODULE RED WIRE RED/BLK WIRE RED/WHT WIRE RPA FUSE SEO TCM BATT FUSE 32 FUSE 27 STARTER MOTOR TO HEADLAMP HIGH BEAM RELAY (DIAGRAM 2 OF 5) TRAILER CONNECTOR TRANSMISSION CONTROL MODULE (TCM) AUTOMATIC TRANSMISSION ASSEMBLY TRLR WRG FUSE 11 TRLR WRG FUSE 42 UNDERHOOD JUNCTION BLOCK UPFITTER AUX 2 READING LAMPS FUSE 28 W/ ACTIVE BRAKE CONTROL W/ CIGAR LIGHTER W/ RV UPFITTER W/O RV UPFITTER W/ TRUCK TRAILER W/ W/ RV CUTAWAY UPFITTER UPFITTER W/O ACTIVE BRAKE CONTROL W/O CIGAR LIGHTER

4.3L 4.8L, 5.3L, 4.3L 6.0L 4.8L, 5.3L, 6.0L 4.8L, 5.3L, 6.6L 6.0L A/C COMPRESSOR RELAY 40 (MANUAL A/C) BANK 1 SENSOR 1 BANK 2 BANK 1 SENSOR 2 SENSOR 2 BANK 2 SENSOR 1 BLK WIRE BREAKOUT) CENTRAL SEQUENTIAL FUEL INJECTION (CENTRAL SFI) (4.3L) CRNK RELAY 39 DRL PCB ECM PWR/TRN FUSE 78 ENGINE CONTROL MODULE (ECM) ENGINE COOLING FAN MOTOR (6.6L) EVEN IGN/ FUEL INJ INJ FUSE 79 FUSE 75 (DIAGRAM 2 OF 5) FAN CLTCH (EV) FUSE 63 (6.6L) ECM PWR/TRN COOLING FUSE 45 FAN RELAY (6.6L) FROM TRLR WRG FUSE 42 (DIAGRAM 1 OF 5) FUEL FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR INJECTOR FUEL FUEL INJECTOR INJECTOR FUEL HEATER (6.6L) FUEL HTR FUSE 71 FUEL INJECTOR FUEL PUMP RELAY 38 HEADLAMP HIGH BEAM RELAY HEATED HEATED OXYGEN OXYGEN SENSOR SENSOR HEATED OXYGEN SENSOR HORN WASH IGNITION IGNITION IGNITION IGNITION COIL 2 COIL 4 COIL 6 COIL 8 IGNITION IGNITION IGNITION IGNITION COIL 3 COIL 1 COIL 5 COIL 7 INJ FUSE 75 LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LOW BEAM LPG FUEL VEHICLE, 3 TANK VEHICLE KIT LPG FUEL VEHICLE, 4 TANK VEHICLE KIT MAF/CNSTR VENT FUSE 64 MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSOR MEGA FUSE NCA WIRE ODD IGN/ FLEX INJ FUSE 65 FUEL FUSE (EXCEPT 6.6L) PASSENGER COMPARTMENT FUSE BLOCK (DIAGRAM 4 OF 5) PNK (OR RED) WIRE PNK WIRE PNK/BLK WIRE PWR/TRN RELAY 49 RED WIRE RED/BLK WIRE REDUCTANT HEATED SENSOR OXYGEN MODULE SENSOR RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY (W/ TRUCK TRAILER) STOP LAMP PCB RELAY (CUTAWAY) TO EVEN IGN/INJ FUSE 79 (DIAGRAM 2 OF 5) TO FUSE HOLDER (DIAGRAM 5 OF 5) TO RUN/CRNK RELAY 15 (DIAGRAM 3 OF 5) W/ CUTAWAY WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY WPR FUSE 55 YEL WIRE