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:

    Underbody Maintenance
    Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...

    Manual Rearview Mirror
    Hold the mirror in the center to move it for a clearer view of behind your vehicle. Adjust the mirror to avoid glare from the headlamps behind you. Push the tab at the bottom of the mirror forward for ...

    Traction Control System (TCS)/StabiliTrak® Light
    The StabiliTrak system or the Traction Control System (TCS) indicator/warning light comes on briefly when the engine is started. If the light does not come on, have the vehicle serviced by your ...