Chevrolet Chevy Express H2500 (2003-2003) class 2 serial data 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

BATTERY BATTERY IND BLK WIRE CLASS 2 SERIAL DATA DK GRN WIRE FUSIBLE LINK C GENERATOR GRY WIRE HOT IN RUN, START UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) IGN E FUSE INSTRUMENT CLUSTER LOGIC IGN VOLT ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMPT, ON LEFT INNER FENDER) RED WIRE STARTING/CHARGING SYSTEM (STARTER MOTOR)

000000 TRIP ABS IND. ABS SYSTEM AIR BAG IND BACKLIGHTS LAMPS CTRL BATTERY IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER RIGHT SIDE OF DASH) BRAKE IND BRAKE WARNING IND CONTROL BATT VOLTAGE GROUND GROUND IGN VOLTAGE SERIAL DATA BRN/WHT WIRE CHECK GAGES IND. CLASS 2 (BCM) CLASS 2 (EBCM) CLASS 2 (PCM) CLASS 2 (SDM) CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM CRUISE IND DK BLU/WHT WIRE DK GRN WIRE DRL IND FUEL GAUGE GROUND GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START IGN IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN CLASS 2 (PCM) IGN VOLT SIG IGN E FUSE 22 ILLUMINATION (6 BULBS) INSTRUMENT PANEL CLUSTER IPC FUSE 31 LCD DISPLAY LEFT TURN IND LH FRT TURN SIG SUP VOLT LOW FUEL IND LT BLU/WHT WIRE MALFUNCTION IND LAMP MIL CTRL MIL SIGNAL OIL PRESSURE GAUGE OIL PRESSURE IND P R N D 3 2 1 PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ATTACHED TO LEFT FRONT FENDER) PPL CLASS 2 SERIAL DATA RED/WHT WIRE RH FRT TURN SIG SUP VOLT RIGHT TURN IND SEAT BELT IND SECURITY IND SPEEDOMETER TACHOMETER TAN/WHT WIRE TOW/HAUL IND TRIP RESET SWITCH TRIP RESET SWN SIGNAL GROUND UNDERHOOD FUSE BLOCK (IN ENGINE COMPT, ATTACHED TO LEFT FRONT FENDER) VOLTMETER YEL WIRE

AIR BAG BLK WIRE BLK/WHT WIRE CLASS 2 (SDM) CLASS 2 SERIAL DATA DK BLU WIRE GRY WIRE IGN INFLATABLE RESTRAINT FRONT END SENSOR (ON LOWER CENTER OF RADIATOR SUPPORT) INSTRUMENT PANEL CLUSTER LEFT FRONT SEAT BELT PRETENSIONER (ON RIGHT SIDE OF LEFT FRONT SEAT) LEFT INFLATABLE RESTRAINT SEAT POSITION SWITCH (ON LEFT SEAT TRACK) LIGHT DUTY LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PPL RIGHT FRONT SEAT BELT PRETENSIONER (ON LEFT SIDE OF RIGHT FRONT SEAT) RIGHT INFLATABLE RESTRAINT SEAT POSITION SWITCH (ON RIGHT SEAT TRACK) SHORTING BAR SPLICE PACK SPLICE PACK SP 347 (IN BODY HARN, 19 CM FROM TAN/ORG WIRE TAN/WHT WIRE TWISTED PAIR WIRES YEL WIRE