Current and Past Models

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

ORDER TOLL FREE:

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.
Or write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207

Prices are subject to change without notice and without incurring obligation. Allow ample time for delivery.

All listed prices are quoted in U.S.

funds. Make checks payable in U.S.

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    See also:

    Endless entertainment options
    Terraza is offered with a wide choice of passenger entertainment features, which can be a welcome addition on long trips while giving owners the ability to interface between the vehicle and one's ...

    Adjusting the Fader and Balance
    1. Press the TONE button. 2. Select Fader or Balance. 3. Select the value. Press the BACK button to go back to the Tone Settings menu. ...

    Ending Cruise Control
    There are three ways to end cruise control: • To disengage cruise control, step lightly on the brake pedal; when cruise control disengages, the indicator light will not be lit. • Press ...