OnStar Services

See also:

Cruise Control
The cruise control lets the vehicle maintain a speed of about 40 km/h (25 mph) or more without keeping your foot on the accelerator. Cruise control does not work at speeds below 40 km/h (25 mph). ...

Braking
Braking action involves perception time and reaction time. Deciding to push the brake pedal is perception time. Actually doing it is reaction time. Average driver reaction time is about three-qaurt ...

Sunroof
The vehicle may be equipped with a power sliding sunroof. To open or close the sunroof, the ignition must be turned to ON, ACCESSORY, or Retained Accessory Power (RAP) must be active. Press and ...