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 ...

Door Locks
To lock or unlock a door manually: • From the inside use the door lock knob on the window sill. • From the outside turn the key toward the front or rear of the vehicle, or press the or but ...

Dome Lamps
The dome lamps are located in the overhead console. They come on when any door is opened and turn off after all the doors are closed. Turn the instrument panel brightness knob located below the dome ...