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 PlayersHood Ajar Indicator Description and Operation Panels
Hood Ajar SwitchThe body control module (BCM) applies B+ to the hood ajarsignal circuit and monitors the voltage to determine the positionof the hood. When the hood is closed, the switch is open andvoltage remains high. When the hood is open, the switch is closedand the voltage is pulled low.The BCM ...