See also:

Keyless Trunk/Liftgate Opening
Press the trunk/liftgate release button located above the license plate to open the trunk/liftgate if the keyless access transmitter is within range. See Trunk (Sedan, Coupe) for additional ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...

Security Light
The immobilizer light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. If the system is working normally, the indicator ligh ...