See also:

Erasing Universal Home Remote Buttons
The programmed buttons should be erased when the vehicle is sold or the lease ends. To erase either Rolling Code or Fixed Code settings on the Universal Home Remote device: 1. Press and hold the two ...

Engine Drive Belt Routing
...

Reactivation for Subsequent Owners
Push and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle. The Advisor will update vehicle records and will explain the OnStar service offers and options ...