Question about 2004 GMC Sierra 2500

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2004 gmc will not turn off / keeps running even with the key out

Truck wont shut off

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  • Anonymous Mar 21, 2014

    truck want shut off

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Hi, sssprinkinkling.

...even when you turn off the key? Google "dieseling". Click and Clack, the Tappet brothers, say that a too-high idle speed is responsible (http://www.cartalk.com/content/columns/Archive/1995/May/13.html).

Regards.
Ken

Posted on Dec 22, 2008

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