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 Advisor can run a check., and an Advisor can run a check.

    See also:

    Running the Engine While Parked
    It is better not to park with the engine running. But if you ever have to, here are some things to know. CAUTION: Idling the engine with the climate control system off could allow dangerous exha ...

    If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow
    Slowly and cautiously spin the wheels to free the vehicle when stuck in sand, mud, ice, or snow. See Rocking Your Vehicle to Get It Out. If the vehicle has a traction system, it can often help to ...

    Vehicle Information Menu Items
    Press MENU on the turn signal lever until Vehicle Information Menu is displayed. Use to scroll through the following menu items: • Unit • Tire Pressure • Jump Start (eAssist Only) • ...