OnStar Services

See also:

High Intensity Discharge (HID) Lighting
WARNING The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer ...

Starting the Engine Using Remote Start
1. Press and release on the RKE transmitter. 2. Within two seconds, press and hold until the turn signal lamps flash. This confirms the request to remote start the vehicle has been received. If the ...

Engine Power Messages
ENGINE POWER IS REDUCED This message displays and a chime sounds when the cooling system temperature gets too hot and the engine further enters the engine coolant protection mode. See Engine Over ...