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
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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:
Engine Cooling System Messages
A/C OFF DUE TO HIGH ENGINE TEMP
This message displays when the engine coolant becomes hotter than the normal
operating temperature. To avoid added strain on a hot engine, the air
conditioning com ...
Manual Operation of Power Liftgate
To change the liftgate to manual operation, press OFF on the liftgate switch.
With the power liftgate disabled and all of the doors unlocked, the liftgate
can be manually opened and closed.
To ope ...
Initial Drive Information
This section provides a brief overview about some of the important features
that may or may not be on your specific vehicle.
For more detailed information, refer to each of the features which can ...






