GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2007 🢒 VUE - FWD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 HVAC Control Module Replacement

Removal Procedure
  1. Remove the console shift lever bezel. Refer to Console Shift Lever Bezel Replacement .
  2. Remove the instrument panel (I/P) storage compartment. Refer to Instrument Panel Storage Compartment Replacement .
  3. Remove the center trim bezel. Refer to Instrument Panel Accessory Bezel Replacement .

    4. Object Number: 1644394 Size: SH
  4. Disconnect the electrical connectors from the HVAC control module.
  5. Disconnect the remaining electrical connectors from the center trim bezel.

    6. Object Number: 1644589 Size: SH
  6. Remove the HVAC control module screws from the center trim bezel.
  7. Remove the HVAC control module from the center trim bezel.

Installation Procedure

    Object Number: 1644589 Size: SH
  1. Install the HVAC control module to the center trim bezel.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the HVAC control module screws to the center trim bezel.

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


    Object Number: 1644394 Size: SH
  3. Connect the electrical connectors to the HVAC control module.
  4. Connect the remaining electrical connectors to the center trim bezel.
  5. Install the center trim bezel to the I/P. Refer to Instrument Panel Accessory Bezel Replacement .
  6. Install the I/P storage compartment. Refer to Instrument Panel Storage Compartment Replacement .
  7. Install the console shift lever bezel. Refer to Console Shift Lever Bezel Replacement .

    8. 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.

  8. Calibrate the mode door by simultaneously pushing the A/C and RECIRC buttons on the HVAC control module 3 times each, within 2 seconds of initial push.
    9. 8.1. The A/C and RECIRC button LED's will flash while this calibration is taking place.
    8.2. The calibration will take anywhere between 10-30 seconds depending on battery voltage.
    8.3. The LED's will quit flashing when the calibration is complete.
  9. Cycle the ignition and verify proper operation.
  10. Refer to Control Module References for programming and setup information.