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:
Collision Damage Repair (U.S. and Canada)
If the vehicle is involved in a collision and it is damaged, have the damage
repaired by a qualified technician using the proper equipment and quality
replacement parts. Poorly performed collision r ...
Doing Your Own Service Work
WARNING
It can be dangerous to work on your vehicle if you do not have the proper
knowledge, service manual, tools, or parts. Always follow owner manual
procedures and consult the service manual f ...
Overheated Engine Protection Operating Mode
If an overheated engine condition exists and the ENGINE POWER IS REDUCED message
is displayed, an overheat protection mode which alternates firing groups of cylinders
helps prevent engine damage. ...






