See also:

Setting the Clock
The navigation system time and the analog clock operate independently. Changing the time through the navigation system does not change the time on the analog clock. See Clock   to change ...

TTY Users
OnStar has the ability to communicate to the deaf, hard–of–hearing, or speech–impaired customers while in the vehicle. The available dealer–installed TTY system can provide in-vehicle acces ...

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has ch ...