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:

    Engine Compartment Overview
    5.3 L V8 Engine Shown (4.3 L V6 Engine, 4.8 L V6 Engine, 6.0 L V8 Engine, and 6.2 L V8 Engine Similar) A. Engine Air Cleaner/Filter on page 10‑17. B. Coolant Surge Tank and Pressure Cap. S ...

    Airbag Readiness Light
    This light shows if there is an electrical problem. The system check includes the airbag sensor(s), passenger sensing system, the pretensioners, the airbag modules, the wiring, and the crash sensing a ...

    Setting the Tone (Bass/Midrange/Treble)
    BASS/MID/TREB (Bass, Midrange, or Treble): To adjust bass, midrange, or treble: 1. Press until the tone control tabs display. 2. Continue pressing to highlight the tab, or press the softkey under ...