OnStar Services

See also:

How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Turn the ignition to ON/RUN, with the engine off. 2. Press ...

License Plate Lamp
To replace one of these bulbs: 1. Remove the two screws holding each of the license plate lamps to the liftgate trim. 2. Turn and pull the license plate lamp forward through the liftgate trim open ...

Trailer Brakes
A loaded trailer that weighs more than 450 kg (1,000 lbs) needs to have its own brake system that is adequate for the weight of the trailer. Be sure to read and follow the instructions for the trailer ...