See also:

Erasing Universal Home RemoteButtons
You should erase the programmed buttons when you sell the vehicle or terminate your lease. To erase either rolling code or fixed code on the Universal Home Remote device, do the following: 1. ...

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 ...

OnStar Mobile App
With an iPhone® or Android™-based mobile device, an OnStar mobile app can be downloaded. The vehicle can be remote started, if equipped, or the doors can be unlocked from anywhere there ...