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

54 49 22 33 (DIESEL) (GASOLINE) ABS PUMP ABS/TCC SW ABS/VSES FUSE 48 ANTI-LOCK IND BLK WIRE BODY FUSE BLOCK (UNDER 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 11 BRN WIRE CRUISE CONTROL SYSTEM DIESEL DK GRN WIRE GAS GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) BRAKE INPUT LEFT FRONT WHEEL SPEED SENSOR (ON INSIDE OF LEFT FRONT WHEEL) LOGIC LT BLU WIRE PNK WIRE PPL PPL DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) RED/BLK WIRE RIGHT FRONT WHEEL SPEED SENSOR (ON INSIDE OF RIGHT FRONT WHEEL) SERIAL DATA IGNITION STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TCC BRAKE SW TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER 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

ABS/TCC SWITCH ABS/TCS CLASS 2 SERIAL DATA YAW RATE SENSOR LO REF WHEEL POS SENS LOW REF ABS/VSES FUSE 48 AUXILIARY 1 FUSE 32 BLK WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRAKE IN BRKS FUSE 11 BRN WIRE DEL TORQUE DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) GRY WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START IGN E FUSE 22 IGNITION 3 VOLT LATERAL ACCELEROMETER SIG LEFT FRONT WHEEL SPEED SENSOR (ON INSIDE OF LEFT FRONT WHEEL) LEFT REAR WHEEL SPEED SENSOR (AT LEFT REAR OF WHEEL HUB) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE PNK 1 2 WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMPT, ON LEFT INNER FENDER) PPL PPL UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) PPL/WHT WIRE PRECHARGE MOTOR LO BATTERY (+) GND PRECHARGE MOTOR HI PRECHARGE PUMP (AT LEFT FRONT OF FRAME RAIL) RED WIRE REQ TORQUE REQUEST TORQUE SIGNAL DELIVERED TORQUE SIGNAL RIGHT FRONT WHEEL SPEED SENSOR (ON INSIDE OF RIGHT FRONT WHEEL) RIGHT REAR WHEEL SPEED SENSOR (AT RIGHT REAR OF WHEEL HUB) RUN WIRE STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON RIGHT SIDE OF TRANSMISSION) VSES MOTOR VSS HIGH VSS LOW VSS OUTPUT WHT WIRE YEL WIRE YEL/BLK WIRE

ABS IND. BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE PRESSURE DIFFERENTIAL SWITCH (ON BRAKE VALVE, NEAR FRONT OF EBCM) BRN WIRE CAUTION IND DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE GROUND GRY WIRE HEAVY DUTY HOT IN RUN OR START IGN 3 VOLTAGE INSTRUMENT PANEL CLUSTER LIGHT DUTY LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NOT READY IND ORG/BLK WIRE PCM IGN 1 FUSE 38 PNK 1 2 WIRE PNK WIRE PPL SENSOR SELF TEST SIG CIR STEERING WHEEL POS MARKER PULSE SIG STEERING WHEEL POSITION SENS SIG 1 STEERING WHEEL POSITION SIG A STEERING WHEEL POSITION SIG B STEERING WHEEL SPEED/ POSITION SENSOR (AT BASE OF STEERING COLUMN) TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YAW RATE FREQUENCY YAW, LATERAL ACCELERATION SENSOR (UNDER FRONT PASSENGER SEAT) YEL WIRE

1 2 6 8 20 21 22 23 24 40 42 47 48 51 62 63 GND TCC PWM CTRL PC SOL HI CTRL 1 8 17 18 19 20 24 27 GND AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE SENSOR (ON LEFT SIDE OF ENGINE) FROM UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) LT GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START IGN 0 FUSE 6 INSTRUMENT PANEL CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PC SOL LO CTRL PPL FRONT LOW SIG FRONT HIGH SIG PCM BATT FUSE 2 PCM IGN 1 FUSE 38 PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PRNDL INDICATOR RANGE B RANGE C IGN B+ GND GND RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (ON LEFT SIDE OF THROTTLE BODY) TOW/ HAUL SWITCH TOW/HAUL INDICATOR TOW/HAUL SWITCH UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 2-3 SOL 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLU WIRE BRN WIRE DK BLU WIRE GRY WIRE HOT IN RUN, START IGN E FUSE 22 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PPL RED WIRE REV STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TAN (OR WHT) WIRE TAN WIRE TAN/BLK WIRE TCC PWM SOL TCC SOL TFT SENSOR UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) IGN VOLT BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE DK BLU WIRE DK GRN WIRE DRIVER WINDOW SWITCH HOT AT ALL TIMES LT BLU WIRE PASSENGER WINDOW SWITCH PWR WDO CIRCUIT BREAKER 2 RAP RELAY RIGHT DN SPLICE SPLICE BLOCK TAN WIRE UP DN UP DN LEFT WHT WIRE YEL WIRE

ANTENNA ANTENNA IN BLK WIRE BLK/WHT WIRE BLUNT CUT) CLASS 2 DATA COAX COMPUTER DATA LINES SYSTEM CUTAWAY UPFITTER DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER (IF EQUIPPED) LEFT REAR SPEAKER LF SPEAKER (+) LF SPEAKER (-) RR SPEAKER (-) RR SPEAKER (+) GROUND BATTERY LR SPEAKER + LR SPEAKER - RF SPEAKER - RF SPEAKER + LT BLU WIRE NOT USED ORG/ WIRE PASSENGER/ CARGO RADIO RADIO BAT FUSE 1 RED/WHT WIRE RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER (IF EQUIPPED) RIGHT REAR SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPTARTMENT) WHT WIRE

ANTENNA ANTENNA IN BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CLASS 2 DATA COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM DASH LMP DIM CNTRL LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER LEFT REAR SPEAKER LF SPEAKER (+) LF SPEAKER (-) RR SPEAKER (-) RR SPEAKER (+) GROUND BATTERY LT BLU WIRE LT GRN WIRE ORG/ WIRE PPL PPL REMOTE RAD VOLT PPL RSA SWITCH RADIO RADIO BAT FUSE 1 REAR SEAT AUDIO CONTROL RED/WHT WIRE REM RADIO SIG LR SPEAKER (+) LR SPEAKER (-) RF SPEAKER (-) RF SPEAKER (+) RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE

2500 2501 COMPUTER DATA LINES SYSTEM 28 27 43 44 66 46 HI SPD SER DATA (+) HI SPD SER DATA (-) AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION (EXCEPT 4.3L, 5.3L) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE BRAKE POS POS LOW SEN (-) (+) (-) (+) REF SIG BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRK B+ BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID FUEL TEM SIG BRAKE APPLY SEN SIG LOW REF GM LAN HI SPD GRY WIRE HI SPD SER DATA + INTERNAL MODE SWITCH (IMS) MODULE (TCM) PARK/NEUTRAL POSITION (PNP) SWITCH RED WIRE SOL CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL TRANSMISSION CONTROL MODULE (TCM) (6.6L:LEFT FRONT CORNER OF ENGINE COMPT) VALVE ASSEMBLY WHT WIRE YEL WIRE

1 14 5 SERIAL DATA BRAKE WARN IND CTRL PASSENGER SEAT BELT IND 19 15 16 ALARM ENABLE SIG HAZARD SW LEFT SIG HAZARD SW RIGHT SIG 2 59 28 60 SERIAL DATA LH SEAT BELT SW LOW REF RH SEAT BELT SW 8 17 PARK LAMP SIGNAL HEADLAMP SW OFF SIG AIR BAG FUSE 28 AUTO OFF 3 8 BATTERY BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CHIME MODULE (W/O RADIO) (BEHIND LEFT CENTER OF DASH) CONNECTOR BREAKOUT) DATA LINK CONNECTOR (DLC) DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH FUSE 22 GROUND GRY WIRE GRY/BLK WIRE HAZARD SWITCH HEAD PARK HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES IGN SW IGNITION KEY SWITCH IGNITION SWITCH PNK WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR JAMB SWITCH (W/ LEFT REAR HINGED DOOR) (AT LEFT "B" PILLAR) LEFT TURN LOGIC LT BLU WIRE LT BLU/BLK WIRE OFF ORG/ WIRE PARK BRAKE SWITCH (UNDER LEFT SIDE OF DASH) PARK BRK SW SIG PASSENGER AIR BAG IND PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PASSENGER SEAT BELT BUCKLE (W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER) PASSENGER SEAT BELT IND PASSENGER SEAT BELT SWITCH PNK IGN VOLT WIRE PNK PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PPL RADIO RDO/CHIME FUSE 20 RED WIRE RED/WHT WIRE RIGHT REAR DOOR JAMB SWITCH (CARGO/ PASSENGER) (AT RIGHT "B" PILLAR) RIGHT TURN RUN WIRE SEAT BELT IND LOW OIL PRESSURE IND TIRE PRESSURE IND SERIAL DATA SPLICE BLOCK SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ MANUAL SUPPRESSION SWITCH W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER W/O RADIO WHT WIRE YEL WIRE YEL/BLK WIRE