OnStar

See also:

How the System Works
The SBZA symbol lights up in the side mirrors when the system detects a vehicle in the side blind zone, indicating it may be unsafe to change lanes. Before making a lane change, check the SBZA dis ...

Engine Oil Messages
CHANGE ENGINE OIL SOON When this message displays, it means that service is required for the vehicle. See your dealer. See Maintenance Schedule and Engine Oil for more information. When you res ...

Power Liftgate Operation
WARNING! Exhaust gases can enter the vehicle if it is driven with the liftgate or trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or ...