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:
Point of Interest (POI)
The Point of Interest (POI) destination entry method lets you select a destination
from the POI list.
Point of Interest: Press to access
the POI (Point of Interest) screen. From this screen yo ...
Maintenance Replacement Parts
Replacement parts identified here by name, part number, or specification can
be obtained from your dealer.
...
Trailer Towing
(CTS-V and Coupe)
The vehicle is neither designed nor
intended to tow a trailer. ...