See also:

Emergency
With Automatic Crash Response, the built-in system can automatically connect to help in a crash even if you cannot ask for it. Push to connect to an Emergency Advisor. GPS technology is us ...

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

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...