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:

    Wiper Blade Replacement
    Windshield wiper blades should be inspected for wear and cracking. See Maintenance Schedule  for more information. Replacement blades come in different types and are removed in different ways. ...

    Cruise Control Light
    This light is white whenever the cruise control is set and turns green when the cruise control is active. The light goes out when the cruise control is turned off. See Cruise Control for mo ...

    Seating & Cargo
    The standard eight-way power driver's seat offers plenty of adjustment range, so spouses of wide-ranging sizes should have no trouble finding their fit. If you're much taller than 6 feet, avoid th ...