See also:

Tire Pressure
If the vehicle is a hybrid, see the hybrid supplement for more information. Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflatio ...

Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push to try the call again or try again after driving a few miles into ...

System Settings
CONFIG: Press to adjust the number of favorites pages, auto volume, XM (if equipped), and HDD (if available) settings. The FAV, AUTO VOL, XM (if equipped), and HDD (if available) tabs displa ...