GMC Sierra 2500 HD (2002-2012) hvac control module Wiring diagrams

A/T SHIFT LEVER AUTOMATIC TRANSMISSION BODY CONTROL MODULE BRAKE FUSE BRN WIRE CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE CRUISE POWER TAKEOFF CONTROL MODULE (PTO) SWITCH CRUISE PTO DRIVER SHIFT REQUEST SWITCH ELECTRONIC FRONT BRAKE CONTROL AXLE MODULE ACTUATOR FROM IGN A FUSE (DIAGRAM 1 OF 6) FUSE HVAC 1 FUSE HTR/AC FUSE HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P JUNCTION BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 0 FUSE IGNITION SWITCH LOCK OFF MAN A/C ORG/ WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE PPL RED WIRE RUN WIRE STOPLAMP SWITCH TBC IGN 0 FUSE TRANSMISSION TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) CRANK FUSE WHT WIRE YEL WIRE

A/T SHIFT LEVER AUTOMATIC TRANSMISSION BODY CONTROL MODULE BRAKE FUSE BRN WIRE CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE CRUISE POWER TAKEOFF CONTROL MODULE (PTO) SWITCH CRUISE PTO DRIVER SHIFT REQUEST SWITCH ELECTRONIC FRONT BRAKE CONTROL AXLE MODULE ACTUATOR FROM IGN A FUSE (DIAGRAM 1 OF 6) FUSE HVAC 1 FUSE HTR/AC FUSE HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P JUNCTION BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 0 FUSE IGNITION SWITCH LOCK OFF MAN A/C ORG/ WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE PPL RED WIRE RUN WIRE STOPLAMP SWITCH TBC IGN 0 FUSE TRANSMISSION TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) CRANK FUSE WHT WIRE YEL WIRE

1 5 B(+) GMLAN L 2501 2500 COMPUTER DATA LINES SYSTEM 3340 5060 COMPUTER DATA LINES SYSTEM 4.3L 6.6L EXCEPT 4.3L, 6.6L 4.3L A/C CMPRSR FUSE 17 (EXCEPT 6.6L) FUSE 16 (6.6L) A/C CMPRSR RELAY A/C IND A/C ON A/C REFRIGERANT PRESSURE SENSOR (NEAR COMPRESSOR, ON A/C HIGH PRESSURE HOSE) BLK WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GROUND GRY WIRE HOT AT ALL TIMES HVAC BATT FUSE 39 (EXCEPT 6.6L) FUSE 36 (6.6L) HVAC CONTROL MODULE LOGIC MANUAL A/C AUTOMATIC A/C ORG/BLK WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)

2 OR MORE OF W/ ONSTAR, AUDIO AMPLIFIER (IF EQUIPPED) (UNDER REAR OF CENTER CONSOLE) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) CHIME MODULE (CENTER OF DASH, BEHIND RADIO) DATA LINK CONNECTOR (DLC) (LOWER LEFT SIDE OF DASH) DIGITAL RADIO RECEIVER (BEHIND RIGHT END OF DASH) DIGITAL RADIO RECEIVER (IF EQUIPPED) (BEHIND RIGHT END OF DASH) DIGITAL RADIO, REAR SEAT, DK GRN WIRE DRIVER DOOR LOCK/WINDOW SWITCH DRIVER'S SEAT EARPHONE JACKS RADIO CONTROL GROUND DISTRIBUTION SYSTEM HEATED SEAT CONTROL MODULE (W/ SPO HEATED SEATS) HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW SPD GMLAN SER DATA LOW SPEED GMLAN SERIAL DATA LOW SPEED SERIAL DATA LTR FUSE 53 (EXCEPT 6.6L) FUSE 50 (6.6L) MEMORY SEAT MODULE (W/ INDIVIDUAL FRONT SEAT) (UNDER FRONT OF NOT USED NOT USED PASSENGER DOOR LOCK/WINDOW SWITCH POWER DISTRIBUTION SYSTEM RADIO REAR OBJECT SENSOR CONTROL MODULE (AT REAR CARGO AREA, BEHIND TRIM PANEL) REAR SEAT AUDIO (RSA) CONTROL REAR SEAT AUDIO (RSA) CONTROL (IF EQUIPPED) RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) TAN WIRE TAN/BLK WIRE THEFT DETERRENT CONTROL MODULE (TDM) (ON RIGHT SIDE OF STEERING COLUMN) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) W/ DIGITAL RADIO W/ DIGITAL RADIO, REAR SEAT, ONSTAR, EARPHONE JACKS RADIO CONTROL W/ FRONT SEAT, REMOTE CONTROL W/ INDIVIDUAL FRONT SEAT W/ LUXURY EDITION W/ ONSTAR W/ RADIO PROVISIONS W/ REAR SEAT, EARPHONE JACKS RADIO CONTROL W/ REMOTE KEYLESS ENTRY W/O INDIVIDUAL FRONT SEAT W/O LUXURY EDITION W/O RADIO PROVISIONS WHT WIRE

A/T INSTRUMENT SHIFT PANEL HEADLAMP LOCK CLUSTER SWITCH SOLENOID AIR TEMPERATURE SENSOR ASSEMBLY (INSIDE FRONT) AIR TEMPERATURE SENSOR ASSEMBLY (INSIDE REAR) ANALOG CLOCK AUTO A/C AUTO A/C EXC AVALANCHE/ ESCALADE EXT AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER MOTOR BLOWER MOTOR RECIRCULATION RESISTOR ACTUATOR ASSEMBLY BOSE EXC LUXURY CIGAR LIGHTER CLEARANCE LAMPS CLEARANCE SWITCH COURTESY LAMP ("B" PILLAR) COURTESY LAMP (RIGHT) DOME LAMP (FRONT) DOME READING CENTER LAMP HIGH (REAR) MOUNTED STOP LAMP DRIVER DOOR MODULE EXC CAD EXT CAD FRONT PASSENGER DOOR MODULE HEATED SEAT SWITCH (LEFT REAR) HEATED SEAT SWITCH (RIGHT REAR) HVAC CONTROL ASSEMBLY (FRONT AUXILIARY) HVAC CONTROL MODULE I/P COMPARTMENT LAMP I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) INSIDE REARVIEW MIRROR LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LUXURY MAN A/C OVERHEAD CONSOLE READING LAMP (REAR) REAR WHEEL STEERING SWITCH RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) ROOF BEACON SWITCH ROOF MARKER I/P LAMP COURTESY (LEFT) LAMP (LEFT) DATA LINK CONNECTOR ROOF MARKER LAMP (RIGHT) SUNROOF RELAY TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD LAMP SUNROOF MOTOR UNLOCK LOCK RELAY RELAY VISOR LAMP (LEFT) VISOR LAMP (RIGHT) WINDSHIELD WIPER MOTOR MODULE

A/T SHIFT LOCK SOLENOID AUTO A/C AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER MOTOR CONTROL PROCESSOR BLOWER MOTOR RESISTOR ASSEMBLY CIGAR LIGHTER CLEARANCE LAMPS DOME CENTER LAMP HIGH (FRONT) MOUNTED STOP LAMP EXC LUXURY HD TRAILERING ROOF EQUIPMENT MARKER PROVISION LAMP (LEFT) HEADLAMP SWITCH HVAC CONTROL MODULE I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSIDE REARVIEW MIRROR LUXURY MAN A/C OVERHEAD CONSOLE PNK WIRE REAR WHEEL STEERING SWITCH RIGHT COOLING FAN RECIRCULATION ACTUATOR ROOF MARKER LAMP (RIGHT) SUNROOF SUNROOF CONTROL SWITCH MODULE DATA LINK CONNECTOR UNDERHOOD COOLING FAN FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) COOL/FAN RELAY VANITY DOME/ READING MIRROR LAMP LAMP (REAR) (RIGHT) VANITY MIRROR LAMP (LEFT) W/ 5 LAMP ROOF MARKER W/O 5 LAMP ROOF MARKER WINDSHIELD WIPER INSTRUMENT MOTOR PANEL MODULE CLUSTER

BLK WIRE BLK/WHT WIRE COLUMN SHIFT DATA LINK CONNECTOR DIGITAL RADIO RECEIVER EXC LUXURY HEADLAMP SWITCH HVAC CONTROL MODULE I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) IGNITION KEY ALARM SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LUXURY MULTIFUNCTION TRACTION ACCESSORY CONTROL SWITCH SWITCH NCA WIRE RADIO REAR PARKING ASSIST DISABLE SWITCH REAR SEAT AUDIO AUDIO AMPLIFIER CONTROLLER REAR SEAT ENTERTAINMENT ASSEMBLY REMOTE PLAYBACK DEVICE (CD PLAYER) STEERING WHEEL DIC CONTROLS STEERING WHEEL SPEED/ POSITION SENSOR TAN WIRE THEFT DETERRENT CONTROL MODULE TOW/HAUL SWITCH TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION SHIFT SELECT SWITCH TURN SIGNAL/ HAZARD FLASHER MODULE TURN SIGNAL/ MULTIFUNCTION SWITCH VEHICLE COMMUNICATION INTERFACE MODULE VEHICLE REAR SEAT COMMUNICATION ENTERTAINMENT INTERFACE ASSEMBLY MODULE WHT WIRE WINDSHIELD HAZARD WIPER/WASHER LAMPS SWITCH SWITCH

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK GRN/WHT WIRE FOG LAMP CIRCUIT HVAC CONTROL MODULE INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LOWER RIGHT MULTIFUNCTION ACCESSORY SWITCH NCA WIRE OVERHEAD CONSOLE POWER TAKE OFF (PTO) SWITCH PPL/WHT WIRE REMOTE PLAYBACK DEVICE (CD PLAYER) STEERING WHEEL) TRACTION CONTROL SWITCH TRANSFER CASE SHIFT CONTROL SWITCH UPPER LEFT UPPER RIGHT WHT WIRE

A/C FUSE A/C RELAY ABS FUSE ACCESSORY POWER OUTLET AIR FUSE AUDIO AMPLIFIER AUTOMATIC TRANSMISSION CONTROL MODULE (ALLISON) BATTERY CABLE JUNCTION BLOCK BLK WIRE BODY CONTROL MODULE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) CIGAR LIGHTER CTSY LP FUSE DATA LINK CONNECTOR (DLC) DIESEL ONLY DK GRN WIRE DK USED DRL FUSE EARLY SIERRA PRO ECM-B FUSE ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) POWERTRAIN CONTROL MODULE (PCM) EXTERIOR ILLUM LAMPS RELAY FOG LPS FUSE FOGLAMP RELAY FROM AIR FUSE (DIAGRAM 1 OF 4) FROM FUSE BLOCK (DIAGRAM 4 OF 4) FROM RAP FUSE (DIAGRAM 1 OF 4) PARK LAMPS FUSE FRONT BLOWER MOTOR RESISTOR ASSEMBLY FRONT PASSENGER WINDOW/DOOR LOCK SWITCH FRT HVAC FUSE FUEL PUMP RELAY FUSIBLE LINK GRN WIRE HAZARD FUSE HEADLAMP DAYTIME RELAY RUNNING LAMP (DRL) RELAY HEADLAMP DIMMER SWITCH HEADLAMP ROOF SWITCH BEACON RELAY HEADLAMP SWITCH HORN RELAY HVAC CONTROL MODULE INADVERTENT POWER RELAY INSTRUMENT DRIVER PANEL INFOR- CLUSTER MATION (IPC) CENTER (DIC) INTERIOR LIGHT SUSTEM LATE LEFT BATTERY LEFT GENERATOR LEFT I/P FUSE BLOCK LUXURY NCA WIRE ORG/ WIRE PARKLAMP RELAY PASSENGER DRIVER SEAT SEAT PWR WDO CB POWER TAKEOFF (PTO) RELAY RADIO RADIO FUSE RAP 1 FUSE RAP 2 FUSE RAP 2 RELAY RDO AMP FUSE REAR DEFOGGER RELAY REAR WHEEL STEERING CONTROL MODULE RED WIRE REMOTE CONTROL DOOR LOCK RECEIVER RIGHT GENERATOR (W/ DUAL GENERATOR) RIGHT REAR WINDOW SWITCH ROOF THERMO BEACON CUPHOLDER SWITCH ASSEMBLY SEO 1 FUSE SEO 2 FUSE SIERRA DENALI STARTER SOLENOID STOP LPS FUSE ATC FUSE STOPLAMP TRANSFER SWITCH CASE SHIFT MODULE TBC FUSE TO ECM B FUSE (DIAGRAM 1 OF 4) TO FUSE BLOCK (MIR/LOCK FUSE) (DIAGRAM 4 OF 4) TO FUSIBLE LINK (DIAGRAM 3 OF 4) TO IGN 1 RELAY (DIAGRAM 3 OF 4) TO IGN A FUSE (DIAGRAM 2 OF 4) AUX PWR FUSE CIGAR FUSE TO PARK LAMPS FUSE (DIAGRAM 1 OF 4) TRANSFER CASE ENCODER MOTOR TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)

44 19 (DIESEL) (GAS) AIR TEMPERATURE ACTUATOR ALL OTHER GAS 4.3L ALL OTHER GAS 4.3L FUEL INJECTOR PNK PNK CONTROL MODULE WIRE AUXILIARY BATTERY RELAY BASE BLK WIRE BRAKE FUSE BRN WIRE DIESEL DIESEL GAS DIESEL GAS BLOWER MOTOR SWITCH (MANUAL) ECM PRV FUSE (DIESEL) ENGINE CONTROL MODULE (ECM)/ PNK PNK POWERTRAIN CONTROL MODULE (PCM) WIRE ETC FUSE FROM CRUISE FUSE (DIAGRAM 2 OF 4) FROM ENG 1 FUSE (DIAGRAM 2 OF 4) FROM ECM B FUSE (DIAGRAM 1 OF 4) FROM FUSE LINK (DIAGRAM 1 OF 4) FROM IGN C FUSE (DIAGRAM 2 OF 4) FRONT AXLE ACTUATOR FRONT PASSENGER HEATED SEAT SWITCH FUEL FUEL FUEL INJECTOR 4 INJECTOR 2 INJECTOR 8 FUEL INJECTOR 1 FUEL INJECTOR 3 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUSE GAS HTR A/C FUSE HVAC 1 FUSE HVAC CONTROL MODULE IGN 1 RELAY IGN 3 FUSE IGNITION COIL 1 IGNITION COIL 3 IGNITION COIL 5 IGNITION IGNITION COIL 2 COIL 4 IGNITION IGNITION COIL COIL 7 IGNITION IGNITION IGNITION COIL 8 COIL 6 COIL MODULE INJ A FUSE INJ B FUSE MEGA FUSE MEMORY DRIVER SEAT HEATED MODULE SEAT SWITCH UPLEVEL MODE ACTUATOR NCA WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE REAR REAR WHEEL WHEEL STEERING STEERING SWITCH CONTROL MODULE RECIRCULATION ACTUATOR RECIRCULATION AIR MODE ACTUATOR TEMPERATURE ACTUATOR ACTUATOR RED WIRE RIGHT BATTERY RIGHT BATTERY FUSIBLE LINK RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) STOPLAMP ELECTRONIC SWITCH BRAKE CONTROL MODULE (EBCM) THROTTLE ACTUATOR CONTROL MODULE TRANSFER CASE SHIFT CONTROL MODULE UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)