See also:

How the System Works
When the vehicle is started, both outside mirror displays will briefly come on to indicate that the system is operating. While driving forward, the left or right side mirror SBZA display will ...

Engine Coolant Temperature Gage
This gage shows the engine coolant temperature. If the gage pointer moves into the red area, the engine coolant has overheated. If you have been operating your vehicle under normal driving c ...

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 ...