Multi-Band Antenna
The antenna located on the roof of the vehicle is used for the OnStar, XM 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, the performance of OnStar, XM, and GPS can be affected.
See also:
Installing the Fence
Insert the fence into the adapters and lock both latches (A) by turning to
align with the arrow on the adapter (B). ...
Calling for Service
When calling Roadside Service, have the following information ready:
Your name, home address, and home telephone number.
Telephone number of your location.
Location of the vehicle.
Model, ye ...
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not o ...