OnStar

See also:

Recommended Fuel
Use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle's acceleration could be slig ...

Manual Operation
(Power): Press to turn the climate control system on or off. (Fan Control): Press to increase or decrease the fan speed. Pressing either button cancels automatic operation and the system goes into ...

Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. If the wheel leaks air, replace it ...