See also:

Satellite Radio Antenna
For vehicles with XM satellite radio service, the antenna is located on the roof of the vehicle. Keep the antenna clear of obstructions for clear radio reception. ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-521-7300, or write: Buick Customer Assistance Center P.O. Box 33136 Detroit, M ...

Park Tilt Mirrors
If the vehicle has memory mirrors, the outside mirrors have park tilt mirrors. This feature tilts the driver’s side and passenger side mirror to a factory programmed position when the vehicle ...