OnStar Services

See also:

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 ...

Trailer Sway Control (TSC)
Non-hybrid vehicles with StabiliTrak have a Trailer Sway Control (TSC) feature. If the vehicle is towing a trailer and the system detects that the trailer is swaying, the vehicle brakes are applie ...

Parking (Manual Transmission)
Before getting out of the vehicle, place the shift lever in R (Reverse) and firmly apply the parking brake. For vehicles with the key access ignition, turn the ignition key to OFF/LOCK, and r ...