Underbody Maintenance

Use plain water to flush dirt and debris from the vehicle's underbody.

Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop.

    See also:

    SERVICE ALL WHEEL DRIVE
    This message displays if a problem occurs with the All-Wheel Drive (AWD) system. The vehicle will run in 2WD. This could be caused by: - An electronics problem - An AWD system oil overheat - ...

    Ignition Positions
    The vehicle has an electronic keyless ignition with pushbutton start. Pressing the button cycles it through three modes, ACC/ACCESSORY, ON/RUN/START and STOPPING THE ENGINE/OFF. If the push ...

    OnStar®
    If the vehicle is equipped with an active OnStar system, that system may also record data in crash or near crash-like situations. The OnStar Terms and Conditions provides information on data colle ...