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:

    Bulb Replacement
    For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑45. For any bulb-changing procedure not listed in this section, contact your dealer. ...

    Radio Reception
    Frequency interference and static can occur during normal radio reception if items such as cell phone chargers, vehicle convenience accessories, and external electronic devices are plugged into th ...

    Hitches
    It is important to have the correct hitch equipment. Crosswinds, large trucks going by, and rough roads are a few reasons why the right hitch is needed. • The rear bumper on the vehicle is not inte ...