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:

    OnStar Steering Wheel Controls
    This vehicle may have a Talk/Mute button that can be used to interact with OnStar hands-free calling. See Audio Steering Wheel Controls for more information. On some vehicles, the mute button c ...

    Power Steering Fluid
    See Engine Compartment Overview for information on the location of the power steering fluid reservoir. ...

    Storing and Deleting Phone Numbers
    The system can store up to 30 phone numbers as name tags in the Hands-Free Directory that is shared between the Bluetooth and OnStar systems. The following commands are used to delete and store pho ...