Removal Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Coaxial Cable Navigation Antenna

Courtesy of GENERAL MOTORS CORP.

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