OnStar®
OnStar® uses several innovative technologies and live advisors to provide a wide range of safety, security, navigation, diagnostics, and calling services.
See also:
When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated.
A Driver Information Center (DIC) tire pressure message may also display. See
Vehicle Messages for more informati ...
Driving On Grades
Reduce speed and shift to a lower gear before starting down a
long or steep downgrade. If the transmission is not shifted down, the brakes might
have to be used so much that they would get hot and ...
Speedometer and Odometer
The speedometer lets you see your speed in
both miles per hour (mph) and kilometers per
hour (km/h).
The odometer shows how far your vehicle has
been driven, in either miles (used in the United
...