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:

    Rear Window Wiper/Washer
    The rear wiper controls are on the end of the windshield wiper lever. ON: Press the upper portion of the button for continuous rear window wipes. OFF: The rear wiper turns off when the button is r ...

    Ignition Transmission Lock Check
    While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. • The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). †...

    Conditions in Which Remote Start Will Not Work
    The remote vehicle start feature will not operate if: ○ The key is in the ignition. ○ The hood or doors are not closed. ○ The hazard warning flashers are on. ○ There is an ...