See also:

Front Fog Lamp Light
For vehicles with fog lamps, this light comes on when the fog lamps are in use. The light goes out when the fog lamps are turned off. See Fog Lamps  for more information. ...

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 ...

Charging System Light
The charging system light comes on briefly when the ignition is turned on, but the engine is not running, as a check to show the light is working. The light turns off when the engine is sta ...