See also:

Auto Defog
This will allow you to turn the auto defog on or off. Only vehicles with the dual zone climate control will have this option. Press SELECT when Auto Defog is highlighted to open the menu. Tur ...

Towing with a Stability Control System
When towing, the sound of the stability control system might be heard. The system is reacting to the vehicle movement caused by the trailer, which mainly occurs during cornering. This is normal wh ...

Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard. If the light next to the OnStar buttons is red, the system may not be functioning properly. Push and request a vehicle diagnos ...