The multi-band antenna is on the roof of the vehicle. The antenna is used for AM-FM radio, OnStar, the SiriusXM satellite radio service system, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
If the vehicle has a sunroof, and it is open, reception can also be affected.
Radio Reception
Audio PlayersCourtesy Lamp Replacement Lighting Interior Lighting Courtesy Entry Illumination
Courtesy Lamp ReplacementCalloutComponent Name1Courtesy Lamp Lens and BezelProcedureUsing a nylon flat bladed tool release the lens andbezel.2Courtesy LampProcedureRelease the retaining tabs and remove the courtesy lamp fromthe headliner. ...