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:
Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original
equipment wheels and tires, vehicle performance, including its braking, ride
and handling characteristics, stability, and ...
Vehicle Overview
Cadillac stepped into rear-wheel-drive territory with its STS sedan, which
replaced the front-wheel-drive Seville for 2005. Built on a Sigma-based
architecture, like the company's smaller CTS seda ...
Vehicle Security
This vehicle has theft-deterrent features; however, they do not make it
impossible to steal. ...