TTY Users

OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired customers while in the vehicle. The available dealer&-installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn&-by&-Turn Navigation.

    See also:

    Customer Assistance Offices (Mexico)
    To contact the Customer Assistance Center (CAC), use the phone numbers listed in this section. Customer assistance is available Monday through Friday, 08:00 to 20:00 hours, and Saturdays from 08:00 t ...

    Fuel E85 (85% Ethanol)
    Vehicles that have a FlexFuel badge and a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Fuel E85 (85% Ethanol) on page 9‑53. For al ...

    Muting a Call
    During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them. • To mute a call, press , and then say “Mute call.” . To cancel ...