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 PlayersSpecial Tools Ordering Information
Special ToolsThe special service tools shown in this service manual that have product numbers beginningwith J, BO, GE, CH, DT, EN, EL, SA, OR KM are available for worldwide distribution.US, Canada and Caribbean only:Note:For Special Service tools only - see different location below for diagnostic to ...