See also:

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

Power Door Locks
Press or on the RKE transmitter. See Remote Keyless Entry (RKE) System Operation  . : Press to lock the doors. : Press to unlock the doors. See Door Locks  . ...

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 ...