TTY Users

OnStar has the ability to communicate to the deaf, hard-of-hearing, 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.

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    Performance
    One reason the Acadia gets better gas mileage than traditional SUVs is its V-6 engine. Many full-size SUVs are offered with thirsty V-8s, but the Acadia only comes with a 3.6-liter V-6 that produc ...

    Defensive Driving
    Defensive driving means “always expect the unexpected.” The first step in driving defensively is to wear the safety belt. See Safety Belts on page 3‑15. • Assume that other road users (pe ...

    Brake Fluid
    The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview on page 10‑6 for the location of the reservoir. There ...