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Installation Procedure

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: HVAC Control Module & Screws
    GM939703Courtesy of GENERAL MOTORS CORP.
  1. Install the HVAC control module to the center trim bezel.
  2. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the HVAC control module screws to the center trim bezel.

    Tighten:  Tighten the screws to 2.5 N.m (22 lb in).

  4. Fig 2: Temperature Cable Knob & Shaft
    GM933565Courtesy of GENERAL MOTORS CORP.
  5. Center the temperature cable knob by inserting the assembly alignment tab into the centering slot of the temperature knob shaft.
  6. Fig 3: Aligning Cable Lug With Center Point Detent Spring
    GM933637Courtesy of GENERAL MOTORS CORP.
  7. Center the HVAC module temperature door by aligning the cable lug of the temperature control cable with the center point of the detent spring. Detent spring force should hold the temperature door in the desired position.
  8. Fig 4: HVAC Control Module Connectors
    GM939709Courtesy of GENERAL MOTORS CORP.
  9. Connect the temperature cable to the HVAC control module.
  10. Connect the blower switch to the HVAC control module.
  11. Connect the electrical connector to the HVAC control module.
  12. Connect the remaining electrical connectors to the center trim bezel.
  13. Install the center trim bezel to the I/P. Refer to Trim Bezel Replacement - Center in Instrument Panel, Gages and Console.
  14. Install the I/P storage compartment. Refer to Storage Compartment Replacement - Instrument Panel (I/P) in Instrument Panel, Gages and Console.
  15. Install the console shift lever bezel. Refer to Console Shift Lever Bezel Replacement in Instrument Panel, Gages and Console.
  16. IMPORTANT: Any time an HVAC module mode actuator or the HVAC control module is replaced, the HVAC control module must be calibrated to ensure proper air distribution.
  17. Calibrate the mode door by simultaneously pushing the A/C and RECIRC buttons on the HVAC control module three times each, within 2 seconds of initial push.
    • The A/C and RECIRC button LED's will flash while this calibration is taking place.
    • The calibration will take anywhere between 10-30 seconds depending on battery voltage.
    • The LED's will quit flashing when the calibration is complete.
  18. Cycle the ignition and verify proper operation.