Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information, and an Advisor can run a check.

    See also:

    Engine Cover
    Engine Cover 3.0L V6 A. Oil Fill Cap B. Engine Cover Bolt C. Engine Cover To remove: 1. Remove the oil fill cap (A). 2. Remove the engine cover bolt (B). 3. Raise the engine cover (C) to rele ...

    Brake System Messages
    SERVICE BRAKE SYSTEM This message displays along with the brake system warning light if there is a problem with the brake system. See Brake System Warning Light on page 5‑27. If this message ap ...

    Acadia in the Market
    The Acadia Denali does what it sets out to do: Be a more luxurious three-row crossover than the standard Acadia. GMC includes the right things — dual-pane sunroof, differentiating body panels an ...