Current and Past Models

Technical Service Bulletins and Manuals are available for current and past model GM vehicles.

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1-800-551-4123 Monday – Friday 8:00 AM – 6:00 PM Eastern Time

For Credit Card Orders Only (VISA-MasterCard-Discover), visit Helm, Inc. at: www.helminc.com.
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Prices are subject to change without notice and without incurring obligation. Allow ample time for delivery.

All listed prices are quoted in U.S.

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    See also:

    Exterior Lighting Battery Saver
    If the exterior lamp button has been left on, the exterior lamps will turn off about 10 minutes after the ignition is turned to LOCK/OFF and a door has been opened. This protects against drainin ...

    Electric Power Management
    This vehicle has Electric Power Management (EPM), an advanced control system. It estimates the battery’s temperature and state of charge and then adjusts the voltage for best performance and ext ...

    Cruising, Turning & Stopping
    Ride comfort is still king at Buick, and it's a formula GM shouldn't change. The LaCrosse leaves manhole covers and steel plates behind with the sort of measured wump that you'll notice but won't ...