GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 932987  Size: SH
  1. Disconnect the electrical connector from the actuator.
  2. Remove the actuator screws from the HVAC control module.
  3. Remove the actuator from the HVAC control module.

Installation Procedure


    Object Number: 932987  Size: SH
  1. Align the flats on the actuator opening with the flats on the door shaft.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the actuator screws to the HVAC module.
  4. Tighten
    Tighten the screws to 1 N·m (9 lb in).

  5. Connect the electrical connector to the actuator.
  6. 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.

  7. Calibrate the mode door by simultaneously pushing the A/C and RECIRC buttons on the HVAC control module three times each, within two seconds of initial push.
  8. • The A/C and RECIRC button LED's will flash while this calibration is taking place.
    • The calibration will take anywhere between 10 to 30 seconds depending on battery voltage.
    • The LED's will quit flashing when the calibration is complete.
  9. Cycle the ignition and verify proper operation.