OnStar Services

See also:

Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection ...

Ending Cruise Control
There are four ways to end cruise control: - Step lightly on the brake pedal (manual and automatic transmissions). - Press the clutch pedal to the floor (manual transmissions). - Press on ...

Programming the Power Windows
If the battery on the vehicle has been recharged, disconnected, or is not working, you will need to reprogram each front power window for the express-up feature to work. Before reprogramming, repl ...