Add-on Electrical Equipment

The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.

    See also:

    When the Change Engine Oil Soon Message Displays
    Change engine oil and filter. See Engine Oil. An Emission Control Service. When the Change Engine Oil Soon message displays, service is required for the vehicle as soon as possible, within the ne ...

    Engine Cooling When Trailer Towing
    The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating . ...

    A Better-Looking Buick
    Designed mostly in China, where Buick enjoys strong sales, the LaCrosse is an exercise in well-proportioned grace. The front juts out enough that it should give the car an ungainly, pancaked appea ...