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

1491 1382 4040 1732 230 2240 INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM 2090 11 INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM 705 1037 INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM 710 301 COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SYSTEM 812 1140 1969 1080 755 ANTI-THEFT SYSTEM ACCESS PANEL RELAY DOOR LOCKS SYSTEM 1 2 ACCY PANEL LEFT SIDE FRONT RLY CTRL 1 2 PASSENGER DOOR SW UNLOCK RLY CTRL ACCY PANEL LEFT SIDE RLY CTRL 1 2 DRIVER DOOR RELEASE RLY CTRL ACCY PANEL RIGHT SIDE RLY CTRL 1 2 CARGO DOOR RELEASE RLY CTRL ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LOWER SIDE OF DASH) BRN/WHT WIRE CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PARK LAMP SW ON SIG COMMERCIAL VEHICLE 1 2 NON-COMMERCIAL VEHICLE DIMMING INPUT HEADLAMP DIMMER SW SIG DK BLU WIRE DK GRN WIRE DOOR LOCKS SYSTEM DRL ON/OFF SW SIG GROUND GROUND SECURITY SYST SENS LOW REF HEADLAMP ON IND SUPPLY VOLT HORN RLY CTRL GRY WIRE HEADLAMP LOW BEAM RELAY CTRL HAZARD SW SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM POWER TOPS SYSTEM HEADLIGHTS SYSTEM HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PASSENGER DOOR SW UNLOCK RLY CTRL PNK WIRE PNK/WHT WIRE PPL INTERIOR LAMP DEFEAT SW SIG PPL/WHT WIRE RED/WHT WIRE SECURITYN SYSTEM SENS SIG TAN WIRE TAN/WHT WIRE TBC 3 FUSE TBC 4 FUSE TBC FUSE TOW/HAUL SWITCH TRACTION CTRL SW SIG UNDERHOOD FUSE BLOCK WHT WIRE YEL 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

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

A/C FUSE 32 A/C RELAY AUXILIARY 2 FUSE 33 CARGO LKS FUSE 5 AUXILIARY RELAY BODY FUSE BLOCK CAN VENT FUSE 34 CARGO UNLK RELAY COMPOSITE+ DK GRN/WHT WIRE DOOR LKS FUSE 15 DOOR LKS RELAY DRV LKS FUSE 7 HTD MIR/DEFOG FUSE 12 DRV UNLK RELAY EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT SOLENOID FROM UNDERHOOD FUSE BLOCK (HDLP HIBM RELAY) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (MEGA FUSE 65) (DIAGRAM 1 OF 6) FROM UNDERHOOD FUSE BLOCK (PWR SEAT CIRCUIT BREAKER 60) (DIAGRAM 1 OF 6) FUEL PUMP FUSE 12 FUEL PUMP RELAY HDLP HIBM RELAY HDLP LOBM RELAY HORN FUSE 15 HORN RELAY IGN A FUSE 49 IGN B FUSE 52 LEFT HEADLAMP LEFT HIBM FUSE 44 LEFT HIGH BEAM HEADLAMP LEFT LOBM FUSE 43 LEFT LOW BEAM HEADLAMP LT GRN/BLK WIRE PASS UNLK RELAY RED/BLK WIRE RED/WHT WIRE RIGHT HEADLAMP RIGHT HIBM FUSE 45 RIGHT HIGH BEAM HEADLAMP RIGHT LOBM FUSE 42 RIGHT LOW BEAM HEADLAMP RR DEFOG RELAY SEALED SPARE FUSE 33 SPARE RELAY 55 SPARE RELAY 62 STARTER RELAY TAN/WHT WIRE TO BODY FUSE BLOCK (PARK LP RELAY) (DIAGRAM 3 OF 6) TO IGNITION SWITCH (DIAGRAM 3 OF 6) TO UNDERHOOD FUSE BLOCK (IGN A FUSE 49) (DIAGRAM 2 OF 6) UNDERHOOD FUSE BLOCK WPR FUSE 41 WPR RELAY YEL WIRE

BANK 1 SENSOR 1 BANK 1 SENSOR 2 BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLUNT CUT) BODY FUSE BLOCK BRN WIRE BTSI/BU FUSE 36 SPARE FUSE 25 CRUISE CONTROL MODULE (IF EQUIPPED) CTSY LP RELAY (RV/UPFITTER) CTSY LP/SEO FUSE 3 CUTAWAY DK GRN WIRE FR PRK FUSE 22 FROM BODY FUSE BLOCK (AUXILIARY 2 FUSE 33) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (IGN A FUSE 49) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (IGN B, FUSE 52) (DIAGRAM 2 OF 6) FUSE 39 FUSE 40 HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR IGNITION SWITCH INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (HEAVY DUTY) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSIDE REARVIEW MIRROR (W/ TEMP DISPLAY) BODY CONTROL MODULE (BCM) ISRV FUSE 26 LEFT FRONT MARKER LAMP LEFT FRONT PARK/TURN SIGNAL LAMP LICENSE LAMP LOCK LOCK OFF LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OFF ORG/ WIRE PARK PARK LP RELAY PARK/ NEUTRAL POSITION (PNP) SWITCH PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (PCM) RED/BLK WIRE REVERSE RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/TURN SIGNAL LAMP RIGHT TAIL/STOP, TURN SIGNAL LAMP LEFT TAIL/STOP, TURN SIGNAL LAMP RIGHT TAILLAMP ASSEMBLY LEFT TAILLAMP ASSEMBLY RR PRK FUSE 20 LR PRK FUSE 18 RUN WIRE SIR FUSE 37 SPARE FUSE 35 STOP LAMP SWITCH (BLUNT CUT) (NOT USED) TBC IGN 1 FUSE 24 TO BODY FUSE BLOCK (AUXILIARY 1 FUSE 32) (DIAGRAM 5 OF 6) TO BODY FUSE BLOCK (BRKS FUSE 11) (DIAGRAM 5 OF 6) TO UNDERHOOD FUSE BLOCK (CRANK FUSE 27) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (ENG 2 FUSE 21) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (IGN O FUSE 6) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (TBC ACC FUSE 46) (DIAGRAM 4 OF 6) TRAILER WIRING TRAILER WIRING CUTAWAY TRLR BU FUSE 5 BTSI FUSE 28 TRLR PRK FUSE 21 UPFTR PRK FUSE 16 UNDERHOOD FUSE BLOCK WHT WIRE YEL 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

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