See also:

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 communicat ...

Video Screen
The video screen is located in the overhead console. To use the video screen: 1. Push the release button located on the overhead console. 2. Move the screen to the desired position. When the video ...

Making a Call
To make a call: 1. Press 5 once or twice (depending on the radio). 2. Enter the phone number. 3. Select Call to start dialing the number. ...