GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 688318  Size: SH
  1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Remove the 2 screws and the air inlet actuator from the HVAC module.

Installation Procedure


    Object Number: 688318  Size: SH
  1. Install the air inlet actuator to the air inlet door shaft. The actuator can be installed on the shaft in two positions 180 degrees from each other. Ensure that the door is in the correct position for the actuator. Secure with the 2 screws.
  2. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement .