OnStar Services

See also:

At Least Once a Year
Starter Switch Check CAUTION: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before you start, be sure you have e ...

Fog Lamps
Fog Lamps For vehicles with fog lamps, the button is located on the exterior lamp control, left of the steering wheel. To turn on the fog lamps, the ignition and the headlamps or parking l ...

Hill and Mountain Roads
Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips for driving in these conditions include: Keep the vehicle serviced and in good shape. Che ...