Chevrolet Chevy Express G1500 (1996-2012) lt blu/blk Wiring diagrams

BLK WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CLASS 2 CRUISE IND CLASS 2 (PCM) DATA COMPUTER DATA LINES SYSTEM CRUISE CONTROL MODULE (NEAR BRAKE FLUID RESERVOIR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START IGN IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/BLK WIRE NCA WIRE ON CRUISE CONTROL ON/OFF SWITCH OFF ON OFF PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PPL VSS LOW RED/WHT WIRE RESUME/ ACCEL RESUME/ACCEL SERIAL DATA SET/ COAST SPEED SIGNAL AUTO CRUISE INHIBIT SIG VSS HIGH 13 37 STOP LP FUSE 7 STOP/ CHMSL FUSE 8 STOPLAMP SWITCH (ABOVE BRAKE PEDAL) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON RIGHT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE

5.3L, 4.8L, 6.0L 4.3L 6.6L ABS IND. ABS MDL FUSE 2 ABS MTR FUSE 1 B+ SERIAL DATA ENABLE VEHICLE SPD SIG BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE BOOSTER FLUID FLOW ALARM SWITCH (IN POWER STEERING PUMP OUTLET HOSE) BRAKE FLUID LEVEL SWITCH (AT LEFT REAR OF ENGINE COMPT) BRAKE IND BRAKE PRESSURE DIFFERENTIAL SWITCH (ON BRAKE VALVE, NEAR FRONT OF EBCM) BRK FLUID LEVEL SENSOR SIG BRAKE WARNING INDICATOR CTRL BRK SW FUSE 13 COMPUTER DATA LINES SYSTEM DK GRN WIRE GND HI SPD GMLAN BUS - HI SPD GMLAN BUS - HEAVY DUTY HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY 15 ENERGIZED INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 10 LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON INSIDE OF LEFT FRONT WHEEL) LF WHEEL SPEED SENS LOW REF LIGHT DUTY LO SPD GMLAN LOGIC LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE OF DASH, ABOVE BRAKE PEDAL) PARK BRAKE SWITCH (UNDER LEFT PNK WIRE PPL PRK BRK SW RED/BLK WIRE RED/WHT WIRE RF WHEEL SPD SENS LOW REF RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON INSIDE OF RIGHT FRONT WHEEL) SIDE OF DASH) SIGNAL ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) STOP LAMP SWITCH (BEHIND LEFT SIDE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TOWARDS INSTRUMENT PANEL CLUSTER) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED YEL WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) CARGO/ PASSENGER CLASS 2 CRUISE IND CLASS 2 (PCM) DATA COMPUTER DATA LINES SYSTEM CRUISE CONTROL MODULE (NEAR BRAKE FLUID RESERVOIR) CUTAWAY DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START IGN IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/BLK WIRE NCA WIRE ON CRUISE CONTROL ON/OFF SWITCH OFF ON OFF PCM IGN 1 FUSE 38 PNK 17 (OR 1320) WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PPL VSS LOW RED/WHT WIRE RESUME/ ACCEL RESUME/ACCEL SERIAL DATA SET/ COAST SPEED SIGNAL AUTO CRUISE INHIBIT SIG VSS HIGH 13 37 STOP LP FUSE 7 STOP/ CHMSL FUSE 8 STOPLAMP SWITCH (ABOVE BRAKE PEDAL) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON RIGHT SIDE OF TRANSMISSION) WHT (OR LT BLU) WIRE 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 (+) 1959 1955 LR MID OUT (-) RR MID OUT (-) 2 1 8 LO REF 658 1782 VOICE SIG DRAIN WIRE HI SPD GMLAN ANTENNA IN BATT POSITIVE VOLT BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BREAKOUT) BRN/WHT WIRE CELLULAR, DIGITAL RADIO ANTENNA CELLULAR/ NAVIGATION ANTENNA COAX COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CUTAWAY UPFITTER DIGITAL RADIO RECEIVER (LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE GRY WIRE HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) INFO LED DIMMING CTRL GND LF MID OUT (-) RF MID OUT (-) LEFT CARGO DOOR SPEAKER (IF EQUIPPED) LEFT FRONT SPEAKER LEFT REAR SPEAKER LH AUDIO SIG + RH AUDIO SIG + LO GMLAN SERIAL DATA LO REF LO SERIAL DATA LR MID OUT (+) RR MID OUT (+) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MUTE NCA WIRE ORG/ WIRE PASSENGER/ CARGO PNK WIRE RADIO RADIO ANTENNA RDO/ CHIME FUSE 20 RED/WHT WIRE RIGHT CARGO DOOR SPEAKER (IF EQUIPPED) RIGHT FRONT SPEAKER RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROL SWITCH SEEK DOWN SEEK UP SOURCE STEERING WHEEL CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE USB CABLE USB CHARGE USB RECEPTACLE VEHICLE COMMUNICATION INTERFACE MODULE (VICM) (BELOW STEERING COLUMN) VOICE SIG VOL DOWN VOL UP W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL 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

AT IGNITION COIL) BANK 1 SENSOR 1 (IN EXHAUST PIPE, IN FRONT OF CATALYTIC CONVERTER) BANK 2 SENSOR 1 (IN EXHAUST PIPE, IN FRONT OF CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (PART OF DISTRIBUTOR, TOP REAR OF ENGINE) CKP SENS SIG CMP SENS SIG CRANKSHAFT POSITION (CKP) SENSOR (ON LOWER FRONT OF ENGINE, NEAR CRANKSHAFT) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON LEFT SIDE OF ENGINE) EVAP SOL CTRL GEN ON SIG TAC MTR 2 GEN FIELD SIG GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN IGN VOLT IGNITION CONTROL MODULE (ICM) (ON TOP RIGHT SIDE OF ENGINE) KNOCK SENSOR (KS) 1 KNOCK SENSOR (KS) 2 KS 2 SIG KS 2 SIG LOW REF LOW REF KS 1 SIG KS 1 SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MAP SENS SIG LOW REF LOW REF NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 2 3 WIRE PNK WIRE PNK/BLK WIRE PPL PPL IC 1 CTRL IC 3 CTRL IC 2 CTRL PPL/WHT WIRE RED WIRE SENS SIG STARTING/CHARGING SYSTEM TAC MTR 1 TAN WIRE TAN/WHT WIRE TP SENS 1 ECT SENS SIG TP SENS 2 WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

5.3L 5.3L EXCEPT 5.3L 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 13 BRN WIRE COMPUTER DATA LINES SYSTEM CUTAWAY DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 19 ECM IGN/ GLOW PLUG MDL IGN FUSE 30 ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT RADIATOR TEMPERATURE SENSORS 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/ CRNK 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 (OR PNK) 5 6 7 WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 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 WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

& IGNITION COIL/MODULE 8) 1 2 3 PPL BLK WIRE BRN WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (ON TOP REAR OF ENGINE) FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL INJECTOR 8 FUEL RAIL PRESSURE (FPR) SENSOR GRY WIRE IGNITION COIL/MODULE 2) IGNITION COIL/MODULE 4 IGNITION COIL/MODULE 6 LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 5 6 WIRE PNK 7 8 9 10 11 12 13 14 WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE SPARK PLUG TAN WIRE TAN/WHT WIRE YEL/BLK WIRE

22 23 PNK WIRE 2755 1551 1670 1666 1551 1668 1665 1174 LOW REF GND 625 1551 START RLY CTRL GND 771 420 776 PRND A SIG STP LP SW SIG PRND P SIG PPL 772 633 410 1020 PRND B SIG CMP SIG ECT SIG IGN 0 VOLT INJ 5 CTRL INJ 8 CTRL ABS SYSTEM B+ CLASS 2 DATA BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENG 1 FUSE 23 ENG 2 FUSE 21 FROM UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) FUSE 39 FUSE 40 GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START IGN 0 FUSE INJ 1 CTRL INJ 6 CTRL INJ 3 CTRL INJ 2 CTRL INJ 7 CTRL INJ 4 CTRL INJECTORS KS 1 SIGNAL KS 2 SIG CKP SIG REQ TORQ SIG UART SER DATA UART SER DATA LOW REF LOW REF GND 1551 1671 1667 1551 1669 1664 LOW REF LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV SW SIG ORG/ WIRE ORG/BLK WIRE PCM BATT FUSE 2 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 POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PPL PPL PPL/WHT WIRE RANGE B RANGE C IGN 1 VOLT B+ LOW REF RED/WHT WIRE STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) W/ ACTIVE BRAKE CONTROL WHT WIRE YEL WIRE YEL/BLK 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