GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1204254  Size: SH
  1. Remove the rear shelf trim panel. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.
  2. Reposition the sound barrier for access.
  3. Use a small wide-bladed plastic tool to release the adhesive. Remove the navigation antenna (2) from the rear shelf.
  4. Disconnect the navigation antenna cable connector.
  5. Clean the adhesive residue from the rear shelf using a razor blade, an isopropyl alcohol pad, and a clean lint-free cloth.

Installation Procedure


    Object Number: 1204254  Size: SH
  1. Clean the surface of the rear shelf in the navigation antenna mounting location, using an isopropyl alcohol pad and a clean lint-free cloth.
  2. Important: Do not touch the adhesive backing.

  3. Remove the protective backing from the adhesive of the navigation antenna.
  4. Install the navigation antenna (2) to the rear shelf surface.
  5. Press the navigation antenna into place for approximately 30 seconds until fully seated.

  6. Connect the navigation antenna cable connector.
  7. Install the sound barrier.
  8. Install the rear shelf trim panel. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.