Parental Control
The RSE system may have a Parental Control feature, depending on the radio. To enable Parental Control, press and hold the radio power button for more than two seconds to stop all system features such as: radio, video screen, RSA, DVD and/or CD.
While Parental Control is on, 
displays.
When the radio is turned back on, Parental Control is unlocked.
See also:
Vehicle Security
This vehicle has theft-deterrent features; however, they do not make it impossible
to steal. ...
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. ...
Trailer Brakes
Does the trailer have its own brakes? Be sure to read and follow the instructions
for the trailer brakes so they are installed, adjusted, and maintained properly.
Because the vehicle has antilock b ...