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:
Rear Side Window Antenna
The AM-FM antenna is located in the passenger rear side windows. Make sure the
inside surfaces of the rear side windows are not scratched and that the lines on
the glass are not damaged. If the in ...
From Map
This destination entry method allows you to select a destination by scrolling
on the map.
From Map: Press to enter the From
Map destination entry method.
To use this destination entry method: ...
Cellular and GPS Antennas
Avoid placing items over or near
the antenna to prevent blocking
cellular and GPS signal reception.
Cellular reception is required for
OnStar to send remote signals to
the vehicle. ...