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:
When to Check Lubricant
It is not necessary to regularly check rear axle fluid unless there is a leak
suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have
it inspected and repaired.
All ax ...
Services Not Included in Roadside Service
Impound towing caused by violation of any laws.
Legal fines.
Mounting, dismounting, or changing of snow tires, chains, or other traction
devices.
Towing or services for vehicles driven on ...
Navigation System
If the vehicle has a navigation system, there is a separate navigation
system manual that includes information on the radio, audio players, and
navigation system.
The navigation system provides d ...