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. ...

Onstar.com
The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service. Get subscription plan pricing and sign up for OnStar Vehicle ...

Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance Center. Any TTY user ca ...