GM Service Manual Online
For 1990-2009 cars only

    Object Number: 474194  Size: SH
  1. Disconnect the fresh/recirculate control cable from the clip (1) and the door at the blower case.
  2. Set the fresh/recirculate lever to the RECIRC position.
  3. At the blower case, hold the door fully downward and install the cable to the clip.
  4. Inspect the fresh/recirc lever for smooth operation.
  5. Ensure that the fresh/recirc lever stops at the correct positions.