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

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

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

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

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

A/T INPUT SHAFT SPEED ACCESSORY VOLT AT ISS HI SIG BLK WIRE BLK/WHT WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE ECM/TCM GLOW PLUG CNTRL MDL IGN 1 FUSE 38 FOH/ECM TCM BATT FUSE 2 GMLAN DATA (+) VSS LOW PC SOL LOW PPL GMLAN DATA (-) 2-3 SHIFT SOL GMLAN DATA (-) GMLAN DATA (+) TR SW P SIG PC SOL HI VSS HI SIG STOP LMP VOLT GRY WIRE HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN ACC RUN AND START HOT IN RUN OR START IGN 0 FUSE 6 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE P/N PARK/NEUTRAL POSITION (PNP) SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE PPL REAR HI SIG GMLAN DATA (+) GMLAN DATA (-) RED/WHT WIRE SENSOR (A/T ISS) (LEFT SIDE OF TRANSMISSION STOP LAMP FUSE 7 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) STOP/CHMSL FUSE 8 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TBC/TCM ACCY FUSE 46 TFP SW B SIG TFT SENS SIG TR SW A SIG LOW REF IGN 1 VOLT BATTERY TFP SW C SIG TR SW B SIG TR SW C SIG TFP SW A SIG PNK WIRE TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT CORNER OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (RIGHT SIDE OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL VALVE 2-3 SHIFT SOL VALVE 30 45 39 9 44 57 MIL IND CTRL REAR HI SIG A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 CLASS 2 DATA CLASS 2 MIL SIG COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) GRY WIRE IGN INSTRUMENT PANEL CLUSTER LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE P/N SIG CLASS 2 DATA GMLAN (-) GMLAN (+) PNK WIRE PPL PRESSURE CONTROL A/T FLUID SOLENOID TEMP VALVE SENSOR RED WIRE REV TAN WIRE TAN/BLK WIRE TCC PWM SOL VALVE TOW/ HAUL IND TOW/ HAUL SWITCH TOW/HL SW YEL WIRE YEL/BLK WIRE

AUXILIARY BATTERY AUXILIARY GENERATOR BATTERY BLK WIRE BRN/WHT WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) LOGIC ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUSIBLE LINK 3 FUSIBLE LINK 5 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GRY WIRE HOT W/ RUN/CRANK RELAY ENERGIZED IGN VOLT INSTRUMENT PANEL CLUSTER (IPC) IP CLSTR FUSE 10 ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE SER DATA BUS - SERIAL DATA STARTER MOTOR TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK VOLT W/ DUAL GENERATOR, AMBULANCE UPFITTER

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

AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUXILIARY BATTERY BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) GMLAN SERIAL DATA CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRNK RELAY 39 DATA BUS - DATA FUEL BUS (-) INJECTOR SUPPLY VOLTAGE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUSIBLE LINK 2 GRY WIRE IGNITION SWITCH IGNITION VOLTAGE OFF ORG/BLK WIRE PNK WIRE PPL RED WIRE RUN WIRE STARTER ENABLE RELAY CTRL STARTER MOTOR STRTR SOL FUSE 44 TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK WHT WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LH AUDIO SIG (+) RH AUDIO SIG (+) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ LF MID OUT (+) RF MID OUT (+) 1959 1955 LR MID OUT (-) RR MID OUT (-) 2 1 8 LO REF 658 1782 VOICE SIG DRAIN WIRE HI SPD GMLAN ANTENNA IN BATT POSITIVE VOLT BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BREAKOUT) BRN/WHT WIRE CELLULAR, DIGITAL RADIO ANTENNA CELLULAR/ NAVIGATION ANTENNA COAX COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CUTAWAY UPFITTER DIGITAL RADIO RECEIVER (LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE GRY WIRE HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) INFO LED DIMMING CTRL GND LF MID OUT (-) RF MID OUT (-) LEFT CARGO DOOR SPEAKER (IF EQUIPPED) LEFT FRONT SPEAKER LEFT REAR SPEAKER LH AUDIO SIG + RH AUDIO SIG + LO GMLAN SERIAL DATA LO REF LO SERIAL DATA LR MID OUT (+) RR MID OUT (+) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MUTE NCA WIRE ORG/ WIRE PASSENGER/ CARGO PNK WIRE RADIO RADIO ANTENNA RDO/ CHIME FUSE 20 RED/WHT WIRE RIGHT CARGO DOOR SPEAKER (IF EQUIPPED) RIGHT FRONT SPEAKER RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROL SWITCH SEEK DOWN SEEK UP SOURCE STEERING WHEEL CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE USB CABLE USB CHARGE USB RECEPTACLE VEHICLE COMMUNICATION INTERFACE MODULE (VICM) (BELOW STEERING COLUMN) VOICE SIG VOL DOWN VOL UP W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE