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

2 6 3 1 CAN BUS HI LO REF CAN BUS LO 3 21 DIMMING CTRL TRACTION SW 5.3L, 4.8L, 6.0L 4.3L 6 16 TCC BRAKE SIG PRK BRK SW ABS IND. ABS MDL FUSE 2 ABS MTR FUSE 1 BLK WIRE BLK/PPL WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE IND BREAKOUT TOWARDS INSTRUMENT PANEL CLUSTER) BRK SW FUSE 13 BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUSE 29 GRY WIRE GRY/BLK WIRE HI SPD GMLAN DATA + HI SPD GMLAN DATA + B+ HI SPD GMLAN DATA- HI SPD GMLAN DATA- GND HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY 15 ENERGIZED IGN VOLT IGN VOLT STEERING SENS A STEERING SENS C INSTRUMENT PANEL CLUSTER (IPC) IP CLSTR FUSE 10 LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON INSIDE OF LEFT FRONT WHEEL) LEFT REAR WHEEL SPEED SENSOR (WSS) (AT LEFT REAR WHEEL HUB) LF WHEEL SPD SENS LOW REF LOW REF LO SPD GMLAN LOGIC LOGIC STEERING WHEEL SPEED/ POSITION SENSOR (AT BASE OF STEERING COLUMN) LOW REF RF WHEEL SPD SENS LOW STABILITY IND LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH (UNDER LEFT PNK 7 3 5 6 2 4 1 8 WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON INSIDE OF RIGHT FRONT WHEEL) RIGHT REAR WHEEL SPEED SENSOR (WSS) (AT RIGHT REAR WHEEL HUB) SERIAL DATA SERIAL DATA ENABLE B+ SIDE OF DASH) STEERING ANGLE SENS CAN BUS LO DATA STEERING SENS B STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) STR/WHL SNSR (G) TAN WIRE TAN/BLK WIRE TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VDC IND VEHICLE SPD SIG CAN BUS HI DATA VEHICLE SPEED SIGNAL WHT WIRE WHT/BLK WIRE YAW, LATERAL ACCELERATION SENSOR (UNDER FRONT PASSENGER SEAT) YEL WIRE YEL/BLK WIRE

2 3 11 13 DATA BUS (-) DATA BUS (+) 2 3 DATA BUS (+) DATA BUS (-) 2 3 SERIAL DATA SERIAL DATA 5 4 6 7 157 147 167 177 DATA BUS (+) DATA BUS (-) DATA BUS (-) DATA BUS (+) 6 5 DATA BUS (-) DATA BUS (+) 6.6L 4.8L, 5.3L, 6.0L 4.3L ACC WAKE UP SERIAL DATA DATA BUS (+) DATA BUS (-) BLK/WHT WIRE CHIME MODULE (BEHIND LEFT CENTER OF DASH) CUTAWAY DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DATA LINK RESISTOR DIGITAL RADIO RECEIVER (S-BAND DIGITAL AUDIO SYSTEM) (LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LIGHT DUTY W/O RECREATIONAL VEHICLE, UPFITTER SALES PACKAGE LT GRN WIRE LTR/DLC FUSE 73 NITROGEN OXIDES SENSOR 1 (TOP LEFT REAR SIDE OF ENGINE) NITROGEN OXIDES SENSOR 2 (MIDDLE OF DIESEL PARTICULATE FILTER) RADIO RED WIRE RED/WHT WIRE REDUCTANT SENSOR MODULE (ABOVE REDUCTANT TANK) REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (IF EQUIPPED) (BEHIND CENTER OF DASH) SERIAL DATA SPLICE PACK TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/O RADIO WHT WIRE

11 12 LPS DIMMER SW SIG DIMMING VOLT REF 2 15 HEAD 8 17 PARK LAMPS SIG HEADLAMPS OFF SIG AUXILIARY BLOWER MOTOR SWITCH BATTERY POS VOLT BCM 3 FUSE 26 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE BRN/WHT WIRE CONNECTOR CONTROL DIMMING CTRL DK GRN WIRE DRIVER DOOR LOCK SWITCH DRIVER INFORMATION CENTER (DIC) SWITCH DRIVER WINDOW SWITCH FRONT AUXILIARY HVAC CONTROL ASSEMBLY HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES HVAC CONTROL ASSEMBLY IN FRONT HEADLINER HARNESS, 21 CM INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (W/ MANUAL SUPPRESSION) LEFT STEERING WHEEL CONTROL SWITCH LPS DIMMING CTRL LT BLU WIRE OFF AUTO PARK ORG/ WIRE ORG/WHT WIRE PASSENGER DOOR LOCK (W/ POWER SWITCH MIRRORS, POWER WINDOWS) PASSENGER WINDOW SWITCH PNK CONTROL PNK WIRE PNK PNK W/O REDUNDANT RADIO STEERING WHEEL WIRE PNK WIRE RADIO RED WIRE RED/WHT WIRE RIGHT STEERING WHEEL CONTROL SWITCH STR WHL SNSR FUSE 17 TRACTION CONTROL SWITCH (TCS) (W/ ACTIVE BRAKE CONTROL) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ AUTOMATIC CRUISE CONTROL, REDUNDANT RADIO STEERING WHEEL CONTROL W/ AUTOMATIC ELECTRONIC CRUISE CONTROL W/ AUXILIARY HEATER W/O REAR A/C W/ ELECTRIC SIDE DOOR LOCK W/ ELECTRIC TOW/HAUL SWITCH SIDE DOOR LOCK W/ POWER OPERATED WINDOW W/ REAR W/O REAR AUXILIARY AUXILIARY CONTROLS CONTROLS W/ REDUNDANT RADIO STEERING WHEEL W/ RV UPFITTER W/O RADIO PROVISIONS W/O RV UPFITTER WHT WIRE YEL WIRE

1 18 25 COURTESY LP CTRL COURTESY LP CTRL DEFEAT SW SIG 149 (OR 690) 20 CM FROM RIGHT SUNSHADE BREAKOUT) BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CARGO CARGO DOOR LATCH ASSEMBLY (IN RIGHT REAR CARGO DOOR) CARGO/PASSENGER COURTESY LP CTRL CTSY LP CTRL DK BLU WIRE DK BLU/WHT WIRE DOME DOME READING FL DOME RLY CTRL FRONT DOME/ READING LAMPS GRY WIRE GRY/BLK WIRE HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES LEFT SUNSHADE LIFTGATE AJAR SW SIG MIDDLE DOME/ READING LAMPS ORG/ WIRE PASSENGER PASSENGER/CARGO W/O RV UPFITTER PNK/BLK WIRE PPL PROVISIONAL READING REAR DOME/ READING LAMPS (PASSENGER) DOME LAMP (CARGO) RED WIRE RIGHT SUNSHADE (ON UPPER RIGHT OF HEADLINER) TAN/WHT WIRE THE ENGINE BLOCK) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD LAMP UPFTR AUX 1 FUSE 36 (W/ CUTAWAY, AMBULANCE, RV UPFITTERS) UPFTR CTSY LAMPS FUSE 4 UPFTR CTSY LAMPS PCB RELAY (W/ AMBULANCE, RV UPFITTER) W/ COMMERCIAL TRADESMAN SALES PACKAGE, CARGO LAMP W/ CUTAWAY W/ CUTAWAY, CARGO W/O RV UPFITTER W/ LEFT, RIGHT SUNSHADE MIRROR W/ RV UPFITTER W/ RV UPFITTER, LEFT, RIGHT SUNSHADE MIRROR W/O RV UPFITTER W/O RV W/ RV UPFITTER UPFITTER WHT WIRE YEL/BLK WIRE

12 CM FROM LEFT FRONT DOME FLUORESCENT WORK LAMP CONNECTOR) BLK WIRE BLU WIRE DK BLU/WHT WIRE DOME FLUORESCENT WORK LAMPS DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) FRONT CARGO FLUORESCENT WORK LAMP FUSE 2 GRY WIRE GRY/BLK WIRE LEFT FRONT ACCESS PANEL FLUORESCENT WORK LAMP LEFT REAR ACCESS PANEL FLUORESCENT WORK LAMP LEFT REAR DOOR JAMB SWITCH (W/ LEFT REAR HINGED DOOR) (AT LEFT "B" PILLAR) ORG/ WIRE PACKAGE, CARGO LAMP) DOME FLUORESCENT WORK LAMPS RELAY PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) REAR CARGO FLUORESCENT WORK LAMP REAR FUSE BLOCK (ON LEFT "B" PILLAR) RED WIRE RIGHT ACCESS PANEL FLUORESCENT WORK LAMP RIGHT REAR DOOR JAMB SWITCH (CARGO/ PASSENGER) (AT RIGHT "B" PILLAR) TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

& IGNITION COIL/MODULE 7) 1 2 3 PNK WIRE 1 2 3 PPL BLK WIRE BRN WIRE COMPUTER DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FCSM BATT FUSE 36 FSCM IGN FUSE 6 GMLAN DATA GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY 15 ENERGIZED IGN VOLT IGNITION COIL/MODULE 1 IGNITION COIL/MODULE 3 IGNITION COIL/MODULE 5 LINES SYSTEM LOW REF LT BLU WIRE LT BLU/WHT WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK PNK PPL 15 16 17 18 19 20 21 22 23 24 WIRE PNK WIRE PPL PPL/WHT WIRE PUMP CTRL RED WIRE RED/WHT WIRE RELAY CTRL SENS SIG SERIAL DATA SPARK PLUG TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)

& IGNITION COIL/MODULE 8) 1 2 3 PPL BLK WIRE BRN WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (ON TOP REAR OF ENGINE) FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL INJECTOR 8 FUEL RAIL PRESSURE (FPR) SENSOR GRY WIRE IGNITION COIL/MODULE 2) IGNITION COIL/MODULE 4 IGNITION COIL/MODULE 6 LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 5 6 WIRE PNK 7 8 9 10 11 12 13 14 WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE SPARK PLUG TAN WIRE TAN/WHT WIRE YEL/BLK WIRE

& IGNITION COIL/MODULE 7) 1 2 3 PNK WIRE 1 2 3 PPL BLK WIRE BRN WIRE COMPUTER DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FCSM BATT FUSE 36 FSCM IGN FUSE 6 GMLAN DATA GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY 15 ENERGIZED IGN VOLT IGNITION COIL/MODULE 1 IGNITION COIL/MODULE 3 IGNITION COIL/MODULE 5 LINES SYSTEM LOW REF LT BLU WIRE LT BLU/WHT WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK PNK PPL 15 16 17 18 19 20 21 22 23 24 WIRE PNK WIRE PPL PPL/WHT WIRE PUMP CTRL RED WIRE RED/WHT WIRE RELAY CTRL SENS SIG SERIAL DATA SPARK PLUG TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)

& IGNITION COIL/MODULE 8) 1 2 3 PPL BLK WIRE BRN WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (ON TOP REAR OF ENGINE) FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL INJECTOR 8 FUEL RAIL PRESSURE (FPR) SENSOR GRY WIRE IGNITION COIL/MODULE 2) IGNITION COIL/MODULE 4 IGNITION COIL/MODULE 6 LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 5 6 WIRE PNK 7 8 9 10 11 12 13 14 WIRE PNK PNK PNK PNK PNK PNK PNK PNK PNK 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE SPARK PLUG TAN WIRE TAN/WHT WIRE YEL/BLK WIRE

BATTERY BLK WIRE BRN WIRE CHARGE AIR COOLER INLET TEMPERATURE SENSOR CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSIBLE LINK 1 FUSIBLE LINK 4 GRY WIRE GRY/WHT WIRE HI SPD GMLAN SER DATA - HTR CTRL IAH COMM 1 IAH COMM 2 IAH CURRENT SIG IAH DIG SIG IAH FDBK SIG IAH HEART BEAT SIG IAH SW ON/OFF SIG IAH TEMP SIG IAH VOLT FEEDBACK SIG IAH VOLT SIG IGN 1 VOLT INTAKE AIR HEATER (BETWEEN INTAKE MANIFOLD TUBE, AIR COOLER OUTLET DUCT) LINE HTR CTRL LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSUE (MAP) SENSOR (ATTACHED TO INTAKE MANIFOLD TUBE) ORG/BLK WIRE ORG/WHT WIRE PLUG 1 CTRL PLUG 2 CTRL PLUG 3 CTRL PLUG 4 CTRL PLUG 5 CTRL PLUG 6 CTRL PLUG 7 CTRL PLUG 8 CTRL PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PUMP HTR CTRL RED WIRE RED/WHT WIRE SENS 1 GND SENS 1 SPLY VOLT SENS 2 GND SENS 2 SPLY VOLT TAN WIRE TAN/BLK WIRE UNDERHOOD JUNCTION BLOCK WAKEUP SER DATA YEL WIRE