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), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicate with GMC by dialing:

1-800-462-8583. TTY users in Canada can dial 1-800-263-3830.

    See also:

    Safety Belt Messages
    BUCKLE SEATBELT This message displays as a reminder when the safety belt is not buckled. ...

    Rear Vision Camera Location
    The camera is located above the license plate. The area displayed by the camera is limited. It does not display objects that are close to either corner or under the bumper and can vary depending ...

    Driver Information Center (DIC)
    The vehicle may have a Driver Information Center (DIC). It displays information about the vehicle and warning messages if there is a system problem detected. DIC messages display in the center of ...