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 PlayersTail Lamp Replacement (Terrain) Lighting Exterior Lighting Tail Lamp
Tail Lamp ReplacementCalloutComponent NamePreliminary ProcedureOpen and support the liftgate assembly.1Tail Lamp Access Hole Cover (Qty:-2)Tip:Use a small flat bladed tool to aid in the removal of theaccess hole covers.2Tail Lamp Screw (Qty:-2)Caution:Refer toFastener Caution.Tighten2.5-Y(22-lb-in)3 ...