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

BATTERY BATTERY IND BLK WIRE CLASS 2 SERIAL DATA DK GRN WIRE FUSIBLE LINK 3 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GRY WIRE HOT IN RUN, START UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) IGN E FUSE 22 INSTRUMENT PANEL 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)

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

AIR TEMPERATURE ACTUATOR AUXILIARY 1 FUSE 32 AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY HVAC CONTROL PROCESSOR AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY MODE ACTUATOR AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY RELAY 24 BLK WIRE BODY CONTROL MODULE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BREAKOUT) (W/O RV UPFITTER OPTION) (W/ RV UPFITTER OPTION) BRK FUSE 11 BRN WIRE DK GRN WIRE DRIVER WINDOW SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) TRACTION CONTROL SWITCH FROM BODY FUSE BLOCK (CTSY LP/SEO FUSE 3) (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT AUXILIARY HVAC CONTROL ASSEMBLY REAR AUXILIARY HVAC CONTROL ASSEMBLY FRONT PASSENGER WINDOW SWITCH (IF EQUIPPED) HVAC 1 FUSE 9 HVAC CONTROL ASSEMBLY HVAC FUSE 10 ORG/ WIRE OSRVM FUSE 2 OUTSIDE REARVIEW MIRROR SWITCH (IF EQUIPPED) PROVISIONAL RAP RELAY 23 PWR WND CIRCUIT BREAKER 34 REAR BLOWER FUSE 13 RED/BLK WIRE RED/WHT WIRE SPARE FUSE 1 TAN WIRE UNDERHOOD FUSE BLOCK W/ ACTIVE HANDLING W/ AUXILIARY HVAC W/ REAR AUXILIARY CONTROL W/ REAR AUXILIARY HVAC W/O ACTIVE HANDLING W/O REAR AUXILIARY CONTROL

BLK WIRE CRANK FUSE 27 CRANK VOLT DK GRN WIRE ENG 1 FUSE 23 FUSIBLE LINK 2 GENERATOR HOT AT ALL TIMES IGN A FUSE 49 IGN B FUSE 52 IGNITION SWITCH LEFT BATTERY LOCK PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMPT, ON LEFT INNER FENDER) PPL RED WIRE RED/BLK WIRE RUN WIRE STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY 61 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) YEL WIRE YEL/BLK WIRE

ABS/VSES FUSE 48 AUX PWR FUSE 29 AUXILIARY GENERATOR AUXILIARY POWER OUTLET 2 BATTERY BLK WIRE BLOWER MOTOR RESISTOR ASSEMBLY BODY CONTROL MODULE (BCM) BODY FUSE BLOCK CHIME (W/O RADIO) CIGAR LIGHTER AUXILIARY POWER OUTLET 1 COOLANT HEATER DATA LINK CONNECTOR (DLC) DRIVER SEAT ADJUSTER SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) FOH/ECM TCM BATT FUSE 2 FROM UNDERHOOD FUSE BLOCK (RFA FUSE 20) (DIAGRAM 1 OF 6) FRONT PASSENGER SEAT ADJUSTER SWITCH (IF EQUIPPED) FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 GENERATOR GLOW PLUG CONTROL MODULE (GPCM) HAZRD FUSE 14 INSTRUMENT PANEL CLUSTER (IPC) INTAKE AIR HEATER (IAH) MODULE IPC FUSE 31 LEFT TRAILER STOP/TURN RELAY (IF EQUIPPED) LTR FUSE 30 MEGA FUSE 65 NCA WIRE ORG/ WIRE 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 (OR 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) SECONDARY BATTERY SPARE FUSE 64 STARTER MOTOR STOP LAMP SWITCH STOP LP FUSE 7 TBC 3 FUSE 16 TBC 4 FUSE 11 TBC FUSE 19 TBC 2 FUSE 18 TO BODY FUSE BLOCK (DOOR LKS FUSE 15) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (REAR FOG LAMPS FUSE 34) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (TBC FUSE 19) (DIAGRAM 1 OF 6) TRANSMISSION CONTROL MODULE (TCM) TRL STOP/TRN FUSE 17 TRLR FUSE 13 BLOW FUSE 51 TRLR FUSE 50 TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK W/ CIGAR LIGHTER W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS W/O CIGAR LIGHTER

AIR TEMPERATURE ACTUATOR AUXILIARY 1 FUSE 32 AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY HVAC CONTROL PROCESSOR AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY MODE ACTUATOR AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY RELAY 24 BLK WIRE BODY CONTROL MODULE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BREAKOUT) (W/O RV UPFITTER OPTION) (W/ RV UPFITTER OPTION) BRK FUSE 11 BRN WIRE DK GRN WIRE DRIVER WINDOW SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) TRACTION CONTROL SWITCH FROM BODY FUSE BLOCK (CTSY LP/SEO FUSE 3) (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT AUXILIARY HVAC CONTROL ASSEMBLY REAR AUXILIARY HVAC CONTROL ASSEMBLY FRONT PASSENGER WINDOW SWITCH (IF EQUIPPED) HIGH IDLE SWITCH HVAC 1 FUSE 9 HVAC CONTROL ASSEMBLY HVAC FUSE 10 ORG/ WIRE OSRVM FUSE 2 OUTSIDE REARVIEW MIRROR SWITCH (IF EQUIPPED) PROVISIONAL RAP RELAY 23 PWR WND CIRCUIT BREAKER 34 REAR BLOWER FUSE 13 RED/BLK WIRE RED/WHT WIRE SPARE FUSE 1 TAN WIRE UNDERHOOD FUSE BLOCK VACUUM PUMP W/ ACTIVE HANDLING W/ AUXILIARY HVAC W/ REAR AUXILIARY CONTROL W/ REAR AUXILIARY HVAC W/O ACTIVE HANDLING W/O REAR AUXILIARY CONTROL

+BC BLK WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) CLASS 2 SERIAL DATA COMPOSITE SEALED COMPOSITE+ DIMMER SWITCH SIGNAL DK GRN WIRE FLASH TO PASS SIGNAL FTP FUSIBLE LINK 2 GRY WIRE HDLP- HI BEAM RELAY HDLP- LO BEAM RELAY HEAD HEADLAMP DIMMER SWITCH HEADLAMP ON IND HEADLAMP ON SIGNAL HEADLAMP, PANEL DIMMER SWITCH HIGH BEAM INDICATOR HIGH BEAM RELAY CONTROL HOT AT ALL TIMES IGN CLASS 2 INSTRUMENT PANEL CLUSTER LED DIMMING SIGNAL LEFT HI BEAM FUSE 44 LEFT HIGH BEAM HEADLAMP LEFT HEADLAMP LEFT LO BEAM FUSE 43 LEFT LOW BEAM HEADLAMP LOGIC CLASS 2 SERIAL DATA LOW BEAM RELAY CONTROL LT GRN WIRE OFF PARK PNK HEADLAMP ON IND CONTROL WIRE PNK WIRE PNK/WHT WIRE PPL/WHT WIRE RED WIRE RIGHT HEADLAMP RIGHT HI BEAM FUSE 45 RIGHT HIGH BEAM HEADLAMP RIGHT LO BEAM FUSE 42 RIGHT LOW BEAM HEADLAMP SEALED SPLICE PACK TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

1 2 PNK WIRE 22 23 24 25 26 PPL 23 24 25 26 27 PPL ACC SER DATA BATT POS VOLT BLK WIRE BRN WIRE BRN/WHT WIRE BUS - COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE OIL LEVEL SWITCH (ON LEFT SIDE OF OIL PAN) GRY WIRE GRY/BLK WIRE IAH COMM 1 IAH COMM 2 IAH CURRENT SIG IAH FDBK SIG IAH TEMP SIG IAH VOLT SIG IGN VOLT LT BLU WIRE LT BLU/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE ORG/BLK 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 7 8 9 10 11 12 13 WIRE PNK 8 9 10 11 12 13 WIRE PNK WIRE PNK/BLK WIRE PPL/WHT WIRE RED WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE WATER IN-FUEL SENSOR WHT/LT GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

1 2 PNK WIRE 22 23 24 25 26 PPL BATT POS VOLT BLK WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (ON FRONT OF ENGINE) CKP SENSOR SIG CRANKSHAFT POSITION (CKP) SENSOR (NEXT TO CRANKSHAFT PULLEY) CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EGR 2 SPLY VOLT EGT SENSOR SIG ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FRP SENSOR SIG FUEL INJ 1 CTRL FUEL INJ 2 CTRL FUSIBLE LINK 1 FUSIBLE LINK 4 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN VOLT INTAKE AIR VALVE (ATTACHED TO LEFT SIDE OF INTAKE HOUSING) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 8 9 10 11 12 13 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 22 23 24 PPL/WHT WIRE RED WIRE RED/WHT WIRE TAN WIRE TAN/WHT WIRE TCC BRAKE SIG TP SENS 1 SIG WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE ECM BATT FUSE 54 ECM IGN FUSE 48 ECM PWR/ TRN FUSE 50 ECM PWR/ TRN FUSE 65 FUEL HEATER FUEL HTR FUSE 4 GLOW PLUG MDL FUSE FUEL PUMP FUSE 2 FUEL PUMP RELAY 72 FUEL RAIL PRESSURE (FRP) SENSOR (ON TOP REAR OF ENGINE) GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE MAF/ CNSTR VENT FUSE 49 NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK PNK 1 2 3 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 22 23 24 PWR/ TRN RELAY 76 RED WIRE RED/WHT WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE