OnStar Services

See also:

Maintenance Schedule
Owner Checks and Services At Each Fuel Stop . Check the engine oil level. See Engine Oil  . Once a Month . Check the tire inflation pressures. See Tire Pressure  . . Inspect the tires f ...

Accessories and Modifications
Adding non-dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions s ...

DIC Operation and Displays
Press the DIC buttons to access the different displays. (Trip/Fuel): Press to scroll through the trip and fuel displays. See “Trip/Fuel Display Menu Items” following for more information. ...