OnStar Services

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Additives
To provide cleaner air, all gasolines in the United States are now required to contain additives that will help prevent engine and fuel system deposits from forming, allowing your emission control ...

Cruise Control
With cruise control, you can 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 about 40 km/h (25 mph). ...

Instrument Panel Overview
The main components of your instrument panel are the following: A. Exterior Lamp Control. See Headlamps on page 162. Dome Lamp Override Button. Instrument Panel Brightness Control. B. Air Outl ...