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:

    Replacement Bulbs
    For replacement bulbs not listed here, contact your dealer. ...

    Pulling a Trailer
    Here are some important points: • There are many laws, including speed limit restrictions that apply to trailering. Check for legal requirements. • Do not tow a trailer at all during the ...

    Engine Air Cleaner/Filter
    See Engine Compartment Overview  for the location of the engine air cleaner/filter. ...