GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 699042  Size: SH
  1. Lower the front headliner to access the HVAC control processor. Refer to Headlining Front Trim Panel Replacement in Interior Trim.
  2. Remove the HVAC control processor from the roof panel.
  3. Remove the HVAC control processor access cover (3).

  4. Object Number: 699043  Size: SH
  5. Remove the HVAC control processor (2) from the HVAC processor case (1).

Installation Procedure


    Object Number: 699043  Size: SH
  1. Install the HVAC control processor (2) to the HVAC processor case (1).

  2. Object Number: 699042  Size: SH
  3. Install the HVAC control processor access cover (3).
  4. Install the HVAC control processor to the roof panel.
  5. Install the front headliner. Refer to Headlining Front Trim Panel Replacement in Interior Trim.