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Old 06-26-2008, 04:26 PM   #3
jeepjones85
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Join Date: Dec 2006
Location: Crossett AR
Posts: 9
Re: 03 GMC Code P0449 = Bad Gas mileage Help!!!

I dont even know where the Vent/Valve/Solenoid is
Its not under the seat of my truck Im not shure what
to look for. I dont want to take it to a dealer just yet...
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