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 ...

Reading Lamps
Press the button near each lamp to turn them on or off. For more information, see: • Dome Lamps on page 6‑5. • Instrument Panel Illumination Control on page 6‑5. ...

Power Door Locks
With power door locks, the switches on the front doors can be used to lock and unlock the vehicle. If available, the switches are on the front doors. (Unlock): Press to unlock the doors. (Lock): Pr ...