See also:

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

Compass
The vehicle may have a compass display in the Driver Information Center (DIC). See Compass. ...

Phone
Bluetooth For vehicles equipped with Bluetooth capability, the system can interact with many cell phones, allowing: Placement and receipt of calls in a hands-free mode. Sharing of the cell ph ...