OnStar Services

See also:

Reduced Engine Power Light
This light comes on when a noticeable reduction in the vehicle’s performance occurs. The vehicle can be driven at a reduced speed when the reduced engine power light is on, but accelerati ...

Used Replacement Wheels
WARNING Replacing a wheel with a used one is dangerous. How it has been used or how far it has been driven may be unknown. It could fail suddenly and cause a crash. When replacing wheels, use a ...

Charging System Light
This light comes on briefly when the ignition key is turned to START, but the engine is not running, as a check to show it is working. If it does not, have the vehicle serviced by your ...