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:
Reading Lamps
For vehicles with reading lamps, they are located on the overhead console.
To turn on the reading lamps, press the button located next to each lamp. To turn them off, press the button again.
The veh ...
How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is changed so that the system can calculate
the next engine oil change. To reset the system:
1. Turn the ignition to ON/RUN, with the engine off.
2. Press ...
MP3 Radio with a Six-Disc CD Player
To set the time and date:
1. Turn the ignition key to ACC/ ACCESSORY or ON/RUN, then press the button to turn the radio on.
2. Press the MENU button and then the softkey under the tab to display H ...