Question about 2003 GMC Sierra

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'03 GMC Sierra with 6.6 Duramax starts with more difficulty over.

Won't start at all after a couple of days.

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  • Ronnie Wilson May 11, 2010

    Fuel Pressure Must Be Checked UNDER "THIS CONDITION" and also Filter/Filters aslo If Aplicable Water Seperater check/Changed. Have you Done Any of these Items Recently?

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You have an air leak in the fuel supply side of the system.

Posted on May 21, 2010

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