OnStar

TTY Users

~1min read

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 access to all of the OnStar services, except Virtual Advisor and OnStar Turn–by–Turn Navigation.

Test yourself

A quick Cadillac CTS quiz: every answer comes with an explanation and a link to the manual page.