Chevrolet Chevy Express H2500 (2003-2003) yel/blk Wiring diagrams

ABS FUSE ABS PUMP ABS/TCC SW ANTI-LOCK IND BLK WIRE BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) BRAKE FLUID LEVEL SW IN LEFT FRONT SENSOR (+) RIGHT FRONT SENSOR (-) VSS INPUT BRAKE FLUID LEVEL SWITCH (HEAVY DUTY) (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE IND BRKS FUSE BRN WIRE CRUISE CONTROL SYSTEM DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START IGN E FUSE INSTRUMENT PANEL CLUSTER LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) BRAKE INPUT LEFT FRONT WHEEL SPEED SENSOR LOGIC LT BLU WIRE NCA WIRE OF TRANSMISSION) PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMP, ON LEFT INNER FENDER) PPL PPL DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) RED/BLK WIRE RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA IGNITION STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TCC BRAKE SW UINDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW VSS OUTPUT YEL WIRE YEL/BLK WIRE

ACCESSORY VOLT DOOR OPEN SW SIG DOOR LOCK CTRL DIMMER RETURN BACKUP LAMP SUPPLY VOLT BATTERY BODY CONTROL MODULE (BEHIND LOWER SIDE OF DASH) COURTESY LAMP HIGH CTRL COURTESY LAMP SUPPLY VOLT COURTESY LAMPS ON SIG DOOR LOCK CTRL DK BLU/WHT WIRE FUSE GRY/BLK WIRE HEADLAMP SW HEADLAMP ON SIG HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACC, RUN HOT IN ACC, RUN, START HOT IN RUN, START IGN 0 FUSE LT BLU WIRE LT GRN WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PNK PNK WIRE PNK WIRE RECREATIONAL VEHICLE W/O RECREATIONAL VEHICLE RED/WHT WIRE TAN WIRE TBC 2 FUSE TBC ACC FUSE UNDERHOOD FUSE BLOCK WARNINGS SYSTEM HEADLIGHTS SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

AUXILIARY 1 FUSE 32 BLK WIRE BODY CONTROL MODULE (BCM) (LOWER RIGHT SIDE OF I/P) BODY FUSE BLOCK (BELOW DRIVERS 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 (OR ORG) 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 (2004) (ATTACHED TO LEFT "B" PILLAR) 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 RELAY CTRL FROM LEFT VANITY MIRROR BREAKOUT) 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 (ATTACHED TO LEFT "B" PILLAR) RED WIRE RED/WHT WIRE RIGHT DOME FLUORESCENT WORK LAMP RIGHT REAR DOOR JAMB SWITCH RIGHT VANITY MIRROR LAMP SPLICE TAN WIRE TBC 2 FUSE 18 UNDERHOOD LAMP W/ POWER DOOR LOCKS W/O POWER DOOR LOCKS WHT WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK DK DK GRN WIRE DK GRN/WHT WIRE DR TRN MIR FUSE 14 DRIVER'S OUTSIDE REAR VIEW MIRROR (LEFT TURN SIGNAL) DRL ON/OFF SIG FR PRK FUSE 22 FRONT TURN SIGNAL LAMP SUPPLY VOLTAGE GRN WIRE HAZARD SWITCH HEAD OFF HEADLAMP AND PANEL DIMMER SWITCH HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT LEFT TURN SIGNAL IND LOGIC LP PKR FUSE 18 LT BLU/WHT WIRE LT GRN/BLK WIRE NCA WIRE NOT USED PARK PARK LAMP RELAY PARK LAMP RLY CTRL HAZARD SW SIG DRL LOW CONTROL PARK LAMP SW ON SIG PASS TRN MIR FUSE 19 PASSENGER'S OUTSIDE REAR VIEW MIRROR (RIGHT TURN SIGNAL) PNK WIRE PROVISIONAL RED/WHT WIRE RIGHT RIGHT TURN SIGNAL IND SPLICE PACK TRAILER WIRING (BLUNT CUT) TRLR PRK FUSE 21 TURN SIGNAL SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH TURN SIGNAL/HAZARD FLASHER MODULE (BEHIND LEFT SIDE OF DASH) UPFTR PRK FUSE 16 WHT WIRE YEL WIRE YEL/BLK WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BRN WIRE BTSI/ BU FUSE 38 CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FLASHER FUSE 14 GRN WIRE GROUND HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LEFT FRONT MARKER LAMP LEFT FRONT PARK/ TURN SIGNAL LAMP LH DRL/ TURN FUSE 10 LR STOP/ TURN FUSE 3 LT BLU WIRE NCA WIRE NOT USED NOT USED NOT USED PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK WIRE RED WIRE RED/WHT WIRE RESISTOR 330 OHMS RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/ TURN SIGNAL LAMP RR STOP/ TURN FUSE 4 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) STOP LP FUSE 7 TRAILER AUXILIARY SUPPLY VOLTAGE TRAILER BACKUP LAMPS SUPPLY VOLTAGE TRAILER WIRING (BLUNT CUT) TRLR BU FUSE 5 TRLR FUSE 13 TRLR FUSE 50 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) RH DRL/ TURN FUSE 9 WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) STOP/ CHMSL FUSE 8 BRN WIRE BRN/WHT WIRE CHMSL/ STOP LAMP SUPPLY VOLTAGE DK BLU WIRE DK BLU/WHT WIRE DK CRUISE CONTROL SYSTEM DK GRN WIRE DK GRN/WHT WIRE DK USED DR TRN MIR FUSE 14 DRIVER'S OUTSIDE REAR VIEW MIRROR (LEFT TURN SIGNAL) DRL ON/OFF SIG FR PRK FUSE 22 FRONT TURN SIGNAL LAMP SUPPLY VOLTAGE GRN WIRE HAZARD SWITCH HEAD OFF HEADLAMP AND PANEL DIMMER SWITCH HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT LEFT TAIL LAMP ASSEMBLY LEFT TURN SIGNAL IND LOGIC LICENSE LAMP LP PKR FUSE 18 LR STOP/ TURN FUSE 4 LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE NCA WIRE NOT USED PARK PARK LAMP RELAY PARK LAMP RLY CTRL HAZARD SW SIG DRL LOW CONTROL PARK LAMP SW ON SIG PASS TRN MIR FUSE 19 PASSENGER'S OUTSIDE REAR VIEW MIRROR (RIGHT TURN SIGNAL) PNK WIRE PROVISIONAL RED/WHT WIRE RIGHT RIGHT TAIL LAMP ASSEMBLY CENTER HIGH MOUNTED STOP LAMP RIGHT TURN SIGNAL IND RR STOP/ TURN FUSE 6 SPLICE PACK TAIL/ STOP/ TURN SIGNAL LAMP TRAILER WIRING (BLUNT CUT) TRLR PRK FUSE 21 TURN SIGNAL SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH TURN SIGNAL/HAZARD FLASHER MODULE (BEHIND LEFT SIDE OF DASH) UPFTR PRK FUSE 16 WHT WIRE YEL WIRE YEL/BLK WIRE

+5V (6.0L) 1744 846 INJ 1 CTRL INJ 6 CTRL 2755 1551 1670 1666 1551 1668 1665 1174 REF LOW GND 2759 1551 1671 1667 1551 1669 1664 REF LOW GND 2762 469 1456 REF LOW REF LOW EGR (6.0L) 440 1049 710 2752 632 B+ CLS 2 DATA CLS 2 DATA REF LOW REF LOW 625 1551 719 RLY CTRL GND LOW REF 687 2761 3-2 SS CTRL REF LOW 771 420 776 PRND A SIG BRK SW SIG PRND P SIG PPL 772 633 410 1020 845 PRND B SIG CMP SIG ECT SIG IGN INJ 5 CTRL INJ 8 CTRL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENG 1 FUSE 23 ENG 2 FUSE 21 FROM UNERHOOD 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 6 INJ 7 CTRL INJ 4 CTRL INJECTORS KS 1 SIGNAL KS 2 SIGNAL CKP 1 SIG 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 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 B+ REF LOW RED/WHT WIRE STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 14 15 16 17 18 19 20 21 PPL 16 17 18 19 20 21 22 23 PPL 2-3 SOL 24 25 26 PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (TOP REAR OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) EXHAUST GAS RECIRCULATION VALVE (6.0L) (ON RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) GRY DK GRN WIRE GRY WIRE HOT IN RUN, START IGN E FUSE 22 LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL 9 10 11 12 13 PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE REV STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TAN (OR WHT) WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TCC SOL TFT SENSOR UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

16 17 18 19 20 21 22 23 PPL 24 25 26 27 28 29 30 31 PPL 24 25 26 PNK WIRE 32 33 34 PNK WIRE 8 9 PNK WIRE AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK/WHT WIRE BRN WIRE CAN VENT FUSE 34 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES IGN LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK 6 7 WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE SIGNAL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

24 25 26 27 28 29 30 31 PPL 32 33 34 PNK WIRE 8 9 PNK WIRE A/C REQUEST A/C SYSTEM ANTI-LOCK BRAKES SYSTEM CRUISE CONTROL SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRANK FUSE 27 CRUISE CONTROL SYSTEM CRUISE ENGAGED CRUISE INHIBIT CTRL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENG 1 FUSE 23 EVAP CANP CTRL EVAP VENT CTRL MIL CTRL 2-3 SS CTRL 1-2 SS CTRL VSS VSS TFT SENS SIG GEN CYCLE SIG IAC COIL B HI IAC COIL B LOW IAC COIL A LOW IAC COIL A HI GEN IND. GRY WIRE HOT IN RUN, START HOT IN START IC 8 CTRL IC 2 CTRL IC 5 CTRL IC 3 CTRL IDLE AIR CONTROL VALVE (ON LEFT SIDE OF THROTTLE BODY) IGN IGN FEED GND EGR CTRL (6.0L) TCC SOL CTRL CLU RLY CTRL IGNITION COILS INSTRUMENT PANEL CLUSTER LOGIC LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAF SIG MAP SIG MALFUNCTION INDICATOR LAMP NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PC SOL HI CTRL EGR HI CTRL PC SOL LO CTRL PMP RLY CTRL PCM IGN 1 FUSE 38 PNK 6 7 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PPL FUEL LEV SIG A/C LOW PRESS PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE REF LO SPARK PLUG STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE