Chevrolet Chevy Express G3500 (1996-2012) blk Wiring diagrams

BLK WIRE BODY FUSE BLOCK (BELOW LEFT FRONT SEAT) CLASS 2 CLASS 2 (PCM) DATA COMPUTER DATA LINES SYSTEM CRUISE IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START IGN IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LT BLU WIRE NCA WIRE ON CRUISE CONTROL ON/OFF SWITCH OFF ON OFF ORG/BLK WIRE 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 SET/ COAST STOP LP FUSE 7 STOP/ CHMSL FUSE 8 STOPLAMP SWITCH (ABOVE BRAKE PEDAL) THROTTLE ACTUATOR CONTROL (TAC) MODULE (AT LEFT REAR OF ENGINE COMPARTMENT) TURN SIGNAL/ MULTIFUNCTION SWITCH UART SERIAL DATA UART SERIAL DATA UART SERIAL DATA UART SERIAL DATA SERIAL DATA 14 58 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON RIGHT SIDE OF TRANSMISSION) VSS HIGH WHT WIRE YEL 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

ABS/VSE FUSE 48 AUX PWR FUSE 29 IPC FUSE 31 AUXILIARY POWER OUTLET 2 BATTERY BLK WIRE BLOW FUSE 51 BLOWER MOTOR RESISTOR ASSEMBLY BODY CONTROL MODULE (BCM) BODY FUSE BLOCK CHIME (W/O RADIO) CIGAR LIGHTER AUXILIARY POWER OUTLET 1 DATA LINK CONNECTOR (DLC) DRIVER SEAT ADJUSTER SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) FROM UNDERHOOD FUSE BLOCK (RFA FUSE 20) (DIAGRAM 1 OF 6) FRONT PASSENGER SEAT ADJUSTER SWITCH (IF EQUIPPED) FUSIBLE LINK 2 FUSIBLE LINK 3 GENERATOR HAZRD FUSE 14 INSTRUMENT PANEL CLUSTER (IPC) LEFT TRAILER STOP/TURN RELAY (IF EQUIPPED) LTR FUSE 30 MEGA FUSE 65 ORG/ WIRE PCM BAT FUSE 2 POWERTRAIN CONTROL MODULE (PCM) PWR SEAT CIRCUIT BREAKER 60 RADIO (W/ RADIO) HVAC CONTROL ASSEMBLY RADIO BAT FUSE 1 RR DEF/HTD MIR FUSE 8 RED WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (IF EQUIPPED) RFA FUSE 20 RIGHT TRAILER STOP/TURN RELAY (IF EQUIPPED) SPARE FUSE 64 STARTER STOP LAMP SWITCH STOP LP FUSE 7 TBC 2 FUSE 18 TBC 3 FUSE 16 TBC 4 FUSE 11 TBC FUSE 19 TO BODY FUSE BLOCK (DOOR LKS FUSE 15) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (CAN VENT FUSE 34) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (TBC FUSE 19) (DIAGRAM 1 OF 6) TRL STOP/TRN FUSE 17 TRLR FUSE 13 TRLR FUSE 50 TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ CIGAR LIGHTER W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS W/O CIGAR LIGHTER

40 21 STOPLAMP SW INPUT IGNITION 44 57 22 54 2 4 6 HI SPD GMLAN + HI SPD GMLAN - TCC BRK SW VSS 61 34 10 CRUISE ON INPUT SET/COAST SIG RESUME/ACCEL SIG ANTI-LOCK BRAKE SYSTEM BLK WIRE BLK/WHT WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CLASS 2 CLASS 2 (PCM) DATA COMPUTER DATA LINES SYSTEM CRUISE IND DK BLU WIRE ECM/TCM GLO PLUG MDL FUSE 38 ENGINE CONTROL MODULE (ECM) FOH/ECM TCM BATT FUSE 2 GROUND GROUND GROUND 1551 1551 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START IGN IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LT BLU WIRE NCA WIRE ON CRUISE CONTROL ON/OFF SWITCH OFF ON OFF PNK WIRE PPL PPL 420 1827 PPL VSS LOW RED/WHT WIRE RESUME/ ACCEL RESUME/ACCEL SET/ COAST STOP LP FUSE 7 STOP/ CHMSL FUSE 8 STOPLAMP SWITCH (ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER OF ENGINE COMPT) 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 YEL/BLK WIRE

397 552 5929 CRUISE CONTROL SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) COOLANT LEV SIG HI IDLE SW COOLANT LEVEL SWITCH CRUISE CONTROL SYSTEM CRUISE ON LOW REF LOW REF CRUISE SET DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EGR VAL POS SIG ECT SENSOR SIG ENGINE CONTROL MODULE (ECM) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP OF ENGINE, NEAR THERMOSTAT HOUSING) ENGINE OIL LEVEL SWITCH (LEFT SIDE OF OIL PAN) FUEL PRESS INJ + GROUP 2 GRY WIRE GRY/BLK WIRE IAT SENSOR 2 SIG IAT SENSOR SIG LOW REF LOW REF CMP SENSOR SIG LOW REF CRANK VOLT PPL LOW REF TUR VANE POS INJ + GROUP 3 INJ 5 INJ 4 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL LEVEL SW SIG CRUISE RESUME LOW REF OIL PRESS SIG ORG/ WIRE ORG/BLK WIRE PARTIAL PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE STARTING/CHARGING SYSTEM TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) BLK WIRE BRN WIRE COMPUTER DATA LINES STSYEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FUSIBLE LINK 1 GLOW PLUG 1 GLOW PLUG 2 GLOW PLUG 3 GLOW PLUG 4 GLOW PLUG 5 GLOW PLUG 6 GLOW PLUG 7 GLOW PLUG 8 GLOW PLUGS GMLAN DATA GRD GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IAH COMM 1 IAH COMM 2 IAH CURRENT SIG IAH SIG IAH TEMP SIG IAH VOLT SIG IGN 0 IGN 1 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE WATER IN-FUEL SENSOR WHT WIRE WHT/BLK WIRE WHT/DK GRN WIRE WHT/LT GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

8 9 10 11 12 PNK WIRE A/C REQ SIG A/C SYSTEM BLK WIRE BRN WIRE CKP SENSOR SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM/TCM GLOW PLUG CNTRL MDL IGN 1 FUSE 38 ENG 1 FUSE 23 ENGINE CONTROL MODULE (ECM) FRP SENSOR SIG FUSIBLE LINK 4 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC, RUN, START HOT IN RUN, START IGN 0 FUSE 6 IGN 1 IGN E FUSE 22 INJ 1 INJ 2 INTAKE AIR TEMPERATURE (IAT) SENSOR 2 (AT FRONT OF TURBOCHARGER) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK 22 23 24 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 25 26 27 28 29 30 PPL/WHT WIRE RED WIRE RED/WHT WIRE STOPLAMP SWITCH (ABOVE BRAKE PEDAL) TAN WIRE TAN/WHT WIRE TUR VAN POS UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

8 9 10 11 12 PNK WIRE BLK WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE E.C.M. FUSE 33 ECM ACT FUSE 63 ECM RELAY 62 FOH/ECM TCM BATT FUSE 2 FUEL HEATER FUEL HTR FUSE 25 FUEL INJECTORS FUEL PMP FUSE 12 FUEL PMP RELAY 57 FUEL RAIL PRESSURE (FRP) SENSOR (ON TOP RIGHT SIDE OF ENGINE) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK 22 23 24 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 20 21 PPL 25 26 27 28 29 30 PPL/WHT WIRE RED/WHT WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRK FUSE 11 BRN WIRE CRANKSHAFT POSITION (CKP) SENSOR (NEXT TO CRANKSHAFT PULLEY) DK BLU WIRE DK GRN WIRE FUEL PUMP (LEFT CENTER INNER FRAME RAIL) GRY WIRE GRY/BLK WIRE HIGH IDLE SWITCH HOT IN LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ATTACHED TO INTAKE MANIFOLD TUBE) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PPL 11 12 PPL 20 21 PPL/WHT WIRE RED WIRE RED/WHT WIRE RUN WIRE TAN WIRE TURBOCHANGER VANE POSITION SENSOR (TOP OF TURBOCHARGER) WHT/BLK WIRE YEL WIRE

1020 2500 COMPUTER DATA LINES SYSTEM 23 1786 1320 6863 STARTING/ CHARGING SYSTEM EXTERIOR LIGHTS SYSTEM 2501 2221 COMPUTER DATA LINES SYSTEM A/C SYSTEM STARTING/ CHARGING SYSTEM ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM RELAY ENGINE CONTROL MODULE (ECM) FUEL LEVEL SENSOR (ON LEFT FRAME RAIL) FUEL PUMP FUEL RAIL TEMPERATURE (FRT) SENSOR (TOP LEFT SIDE OF ENGINE) GENERATOR SIG PARK/NEUTRAL SIG CHMSL + LOW REF GMLAN DATA (-) HI REAR SIG GRY WIRE HOT AT ALL TIMES IND INSTRUMENT PANEL CLUSTER IPC FUSE 31 LOW REF MIL CONTROL A/C COMPRESS START ENABLE EGR MOTOR HIGH LOW REF LT BLU WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK IGN 0 + GMLAN DATA (+) WIRE PNK PPL IGN 1 + TCC BRAKE SIG CHARGE IND GENERATOR 2 SIG A/C LO PRESS SW WIRE PNK WIRE PPL PPL 11 12 PPL FUEL LEV SEN SIG RED/WHT WIRE STARTING/ CHARGING SYSTEM A/C SYSTEM 7076 603 TAN WIRE TAN/WHT WIRE TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SIG WAIT TO WAIT TO START HI IDLE IND WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE