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:
Home Page Features
Various functions are disabled when the vehicle is moving.
Press the Now Playing screen button to display the active source page. The sources
available are AM, FM, XM (if equipped), CD, USB/iPod, a ...
Before Driving
The RSE is for rear seat passengers only. The driver cannot safely view the video
screen while driving.
In severe or extreme weather conditions, the RSE system may not work until the
temperature ...
Head-Up Display (HUD)
WARNING
If the HUD image is too bright or too high in your field of view, it may take you more time to see things you need to see when it is dark outside. Be sure to keep the HUD image dim and placed ...





