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
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170

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. funds.

    See also:

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    Cadillac's version of the Corvette, now in its second year of production, continues to be one of my favorites. Called the XLR, this new Caddy is the first true sports car from General Motors' luxu ...

    Weight of the Trailer
    How heavy can a trailer safely be? It should never weigh more than 450 kg (1,000 lbs). But even that can be too heavy. Speed, altitude, road grades, outside temperature, special equipment, ...

    Battery Power Protection
    This feature shuts off the dome lamps if they are left on for more than 10 minutes when the ignition is in LOCK/OFF. This helps to prevent the battery from running down. ...