OnStar Additional Information

See also:

Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...

If a Tire Goes Flat
It is unusual for a tire to blow out while driving, especially if the tires are maintained properly. See Tires. If air goes out of a tire, it is much more likely to leak out slowly. But if the ...

Interior
Adjust this mirror for a clear view of the area behind the vehicle. Hold the mirror in the center to move it up, down, or side to side. To reduce headlamp glare from behind, push the tab for ...