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 PlayersDriveline System Balance Adjustment
Special ToolsEL-38792-2020-Foot Timing Light Power CordExtensionEL-38792-25Inductive Pickup Timing Light, orequivalentEL-38792-AElectronic VibrationAnalyzer-(EVA)-2EL-38792-276-Foot EVA Power CordExtensionFor equivalent regional tools, refer toSpecial Tools and Equipment.This procedure is designed t ...