See also:

Headlamps
The exterior lamps knob is located on your instrument panel to the left of the steering wheel. (Off): Turn the knob to this symbol and release it to turn off the Daytime Running Lamps (DRL ...

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 ...

Battery Run-Down Protection
This feature shuts off the dome, courtesy, and vanity lamps if they are left on for more than 20 minutes when the ignition is off. This will keep the battery from running down. If the battery ru ...