Removal Procedure

WARNING: This page is about a different car, the 2004 Buick Regal and 2004 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Remove the rear shelf trim panel. Refer to Trim Panel Replacement - Rear Window Shelf in Interior Trim.
Use a small wide-bladed plastic tool to release the adhesive. Remove the global positioning system (GPS) antenna from the rear shelf.
Disconnect the GPS antenna cable connector.

Fig 1: GPS Antenna Cable Connector

Courtesy of GENERAL MOTORS CORP.

Clean the adhesive residue from the rear shelf using a razor blade, an isopropyl alcohol pad, and a clean lint-free cloth.