GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Reposition aside the front half of the carpet.

  2. Object Number: 508435  Size: SH
  3. Remove the rear floor air outlet duct (1) from the holes in the floor reinforcement.
  4. Disconnect the lower heater duct from the heater core outlet cover.
  5. Remove the lower heater duct.

Installation Procedure


    Object Number: 508435  Size: SH
  1. Install the lower heat duct.
  2. Connect the lower heater duct to the heater core outlet cover.
  3. Position the rear floor air outlet duct (1) into the holes in the floor reinforcement.
  4. Reposition the front carpet into position.