Removal Procedure
- Remove the left front sunshade. Refer to SUNSHADE REPLACEMENT .
- Remove the garnish molding from the left front windshield. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILL .
- Remove the instrument panel (IP) trim pad. Refer to TRIM PAD REPLACEMENT - IP UPPER .
- Untape the global positioning sensor (GPS) antenna coaxial cable from the OnStar® harness and unroute the harness from the IP.
- Disconnect the GPS antenna coaxial cable from the vehicle interface unit (VIU).
- Remove the antenna from the windshield and the roof panel.
- Clean the old residue from the windshield using a razor blade and isopropyl alcohol.