See also:

If a Crash Occurs
Here is what to do if you are involved in a crash. • Check to make sure that you are all right. If you are uninjured, make sure that no one else in your vehicle, or the other vehicle, is injure ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...

Touch Screen Buttons
Touch screen buttons are on the screen and highlighted when a feature is available. Some screen buttons highlight when active and gray out when inactive. ...