See also:

Trailer Towing (CTS-V and Coupe)
The vehicle is neither designed nor intended to tow a trailer. ...

Liftgate
The liftglass or liftgate cannot be opened if the rear wiper is in motion. Attempting to open the liftglass or liftgate while the rear wiper is in motion will cause the release of the liftglass ...

Selecting the XM Band
Press the RADIO/BAND button to choose between the AM, FM and XM bands. The last channel played in that band begins to play when that band is selected. ...