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:

    Driving on Grades
    Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and ...

    Remote Keyless Entry (RKE) System
    The RKE transmitter is used to remotely lock and unlock the doors from up to 60m (195 ft) away from the vehicle. : Press to unlock the driver door. Press again within three seconds to unloc ...

    Power Foldaway
    1. Press (A) to fold the mirrors out to the driving position. 2. Press (B) to fold the mirrors in to the folded position. ...