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:
Compass
Your vehicle may have a compass in the Driver Information Center (DIC).
Compass Zone
The zone is set to zone eight upon leaving the factory. Your dealer will set
the correct zone for your location ...
Coverage
Services are provided up to
5 years/160 000 km(100,000mi),
whichever comes first.
In the U.S., anyone driving the
vehicle is covered. In Canada, a
person driving the vehicle without
permiss ...
Heated Mirrors
(Rear Window Defogger):
Press to heat the mirrors.
See Dual Automatic Climate Control
System. ...