Chevrolet Chevy Express G2500 (1996-2012) gry Wiring diagrams

1 2 PNK IGN VOLT WIRE 149 (OR 690) AMBIENT LIGHT SENS SIG HDLP ON SIG ANTI-LOCK BRAKES SYSTEM EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM INSTRUMENT CLUSTER SYSTEM BCM 7 FUSE 8 BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CHMSL CTRL CONTROL SYSTEMS COURTESY LAMP CTRL CRUISE CONTROL SYSTEM CRUISE CONTROL, SOUND SYSTEMS CRUISE CTRL SW SIG CURRENT SENS SIG LO REF IGN VOLT DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS AIR CONDITIONING SYSTEM DRV DOOR LOCK SW UNLOCK SIG DRV DOOR LOCK SW LOCK SIG DRV DR LOCK RLY UNLOCK CTRL DRV DR LOCK RLY UNLOCK CTRL PASS DOOR LOCK SW LOCK CTRL GRY WIRE GRY/BLK WIRE HDLP LOW BEAM RLY CTRL PARK LAMP CTRL HDLP OFF SIG COURTESY LAMPS CTRL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TRANSMISSIONS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IGN VOLT IGNITION SWITCH KEY-IN SWITCH LF DOOR OPEN SW SIG A/C REQUEST SIGNAL LF TURN SIG LAMP CTRL STOP LAMPS CTRL TCC BRAKE SIG LIFTGATE AJAR SW SIG LOW REF WIPER LOW SW SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE OFF ORG/ WIRE ORG/BLK WIRE PARK LAMPS SIG PASS DOOR LOCK SW LOCK CTRL PNK 12 VOLT REF WIRE PNK IGN VOLT L TURN HAZ SW SIG R TURN HAZ SW SIG WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL DEFEAT SW SIG PPL HOOD CLD SW SIG PARK BRAKE SW SIG REAR ACCESS OPEN SW SIG RED/WHT WIRE RF DOOR AJAR SW SIG PASS DR LOCK SW UNLOCK CTRL LF DOOR AJAR SW SIG RR DOOR OPEN SW SIG LR DOOR OPEN SW SIG RF DOOR OPEN SW SIG RUN WIRE STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CTRL SW SIG BACKUP LAMP RLY CTRL UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WIPER SW SIG 2 FRONT WIND WIPER SW HI SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM SOUND, CRUISE YEL WIRE YEL/BLK WIRE

14 13 15 5 BRAKE LOW REF BRAKE SENS SIG 15 5 38 45 61 11 54 26 42 FUEL TEM SIG BRAKE APPLY SEN SIG LOW REF 43 44 28 27 SER DATA BUS(+) SER DATA BUS(-) 6.6L 53 57 40 59 32 16 3 65 35 63 5 6 ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL AUTOMATIC TRANSMISSION (6 SPEED A/T) AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR ASSEMBLY BATT + BCM 2 FUSE 58 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE PEDAL POSITION (BPP) SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DATA BUS - DATA BUS + VSS LOW SIG VSS HIGH SIG DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 19 ENGINE CONTROL MODULE (ECM) GMLAN GROUND GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY 15 ENERGIZED IGN INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 10 LEFT STEERING WHEEL CONTROL SWITCH LOGIC LT BLU WIRE LT GRN/BLK WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE RES+ SET- TAN WIRE TAN/BLK WIRE THROTTLE BODY (EXCEPT 6.6L) TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANS- MISSIONS SYSTEM TRANSMISSION CONTROL MODULE (4 SPEED A/T) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

18 19 20 21 22 23 24 PNK WIRE 2755 1551 1670 1666 1551 1668 1665 REF LOW GND 3-2 SS CTRL REF LOW 439 440 574 PNK WIRE 440 1049 B+ CLS 2 DATA 625 1551 RLY CTRL GND 771 420 776 PRND A SIG BRK SW SIG PRND P SIG PPL 772 633 410 1020 PRND B SIG CMP SIG ECT SIG IGN INJ 2 CTRL INJ 6 CTRL BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CENTRAL SEQUENTIAL FUEL INJECTION (AT TOP OF ENGINE) CKP 1 SIG DK BLU 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 6 INJ 1 CTRL INJ 3 CTRL INJ 4 CTRL INJ 5 CTRL KS 1 SIGNAL LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PCM BATT FUSE 2 PNK 1 2 3 4 5 WIRE PNK PNK 25 26 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 REF LOW REF LOW GND 1551 1671 1667 1551 1669 1653 REF LOW REF LOW STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

10 11 PNK WIRE 12 13 14 15 16 17 18 19 PPL 18 19 20 21 22 23 24 PNK WIRE BLK WIRE BRN/WHT WIRE CARGO/ PASSENGER CUTAWAY DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (ON LEFT SIDE OF ENGINE) FUEL PUMP FUSE 12 FUEL PUMP RELAY FUEL PUMP/ SENDER ASSEMBLY (IN FUEL TANK) GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (IN EXH PIPE, REAR OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (IN EXH PIPE, REAR OF CAT CONVERTER) HOT AT ALL TIMES KNOCK SENSOR (ON TOP LEFT REAR OF (ENGINE) LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK 1 2 3 4 5 WIRE PNK PNK 25 26 WIRE PNK PNK 6 7 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL PPL PPL/WHT WIRE TAN WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (ON LEFT SIDE OF THROTTLE BODY) UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE

1-2 SOL 10 11 PNK WIRE 12 13 14 15 16 17 18 19 PPL 14 15 16 17 18 19 20 21 PPL 2-3 SOL 22 23 24 PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (PART OF DISTRIBUTOR, TOP REAR OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR 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 (ON TOP RIGHT SIDE OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE REV STOP LAMP SWITCH (ABOVE BRAKE PEDAL) 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

14 15 16 17 18 19 20 21 PPL 20 21 22 23 24 25 26 27 PPL 22 23 24 PNK WIRE 28 29 30 PNK WIRE 8 9 PNK WIRE BLK/WHT WIRE BRN WIRE CAN VENT FUSE 34 DK BLU 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 (ON RIGHT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

12 REF GND 20 21 22 23 24 25 26 27 PPL 28 29 30 PNK WIRE 8 9 PNK WIRE A/C REQUEST A/C SYSTEM (W/ FRONT MANUAL CONTROLS) ANTI-LOCK BRAKES SYSTEM CRUISE CONTROL SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CNTRL CRANK FUSE 27 CRUISE CONTROL SYSTEM CRUISE ENGAGED CRUISE INHIBIT DISTRIBUTOR DK BLU 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 IDLE AIR CONTROL VALVE (ON LEFT SIDE OF THROTTLE BODY) IGN 1 IGN COIL IGNITION COIL IGNITION CONTROL MODULE 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 PC SOL 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 FRONT LOW SIG FRONT HIGH SIG PPL FUEL LEV SIG A/C LOW PRESS PPL PNK PNK WIRE PPL/WHT WIRE PRND C SIG PRESS SENS SIG FUEL PRESS SIG PNK WIRE REF LOW PRESS SENS SIG CRANK VOLT STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC SOL CTRL CLU RLY CTRL TP SENS SIG IAT SIG IC TIMING CNTRL UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL 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

13 14 PNK WIRE 15 16 17 18 19 20 21 22 PPL 22 23 PNK WIRE 5.3L W/ CA EMISSONS OTHER BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (AT LEFT FRONT OF ENGINE) ENGINE OIL LEVEL SWITCH (RIGHT SIDE OF OIL PAN) FUEL PUMP FUSE 12 FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GAS PASS/CARGO HEAVY DUTY (W/O HD TRUCK TRAILER WIRING) GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (IN EXH PIPE, BACK OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 1) (IN EXH PIPE, FRONT OF CAT CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (IN EXH PIPE, BACK OF CAT CONVERTER) HOT AT ALL TIMES KNOCK SENSOR 1 (BELOW FRONT OF INTAKE MANIFOLD) KNOCK SENSOR 2 (BELOW REAR OF INTAKE MANIFOLD) LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE OTHER PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) 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 PPL PPL PNK PNK WIRE PPL PPL PPL/WHT WIRE TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

1-2 SOL 13 14 PNK WIRE 15 16 17 18 19 20 21 22 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 ACCELERATOR PEDAL POSITION SENSOR (UNDER LEFT SIDE OF DASH) APPS 1 SIG APPS 2 SIG AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) FUEL TANK PRESSURE SENSOR (ON FUEL TANK) GRY DK GRN WIRE GRY WIRE HOT IN RUN, START IGN E FUSE 22 LOW REF 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 PNK PNK WIRE PPL/WHT WIRE RED WIRE REV SENSOR 1 SENSOR 2 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TAN (OR BLK) WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TCC SOL TFT SENSOR THROTTLE ACTUATOR CONTROL MODULE (AT LEFT REAR OF ENGINE COMPT) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE