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:
Navigating an iPod or USB Device on the Music
Navigator Screen (Vehicles with a Navigation
System)
1. Press and release or
to select the next or previous track within the selected category.
2. Press and hold or
to move quickly through the tracks within the selected category.
3. Press and re ...
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chime may sound when the cooling system temperature gets too hot and the engine further enters the engine coolant protection mode. See Engine Overh ...
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 ...