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Old 02-04-2019, 06:19 PM   #106
HITodd
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Join Date: Aug 2013
Location: Hurlock
Posts: 9
M.O.C. #13730
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I got a code on my 2004 Duramax. I had the valve turned off when I filled the TransferFlow tank. When I started a 3000 mile trip, of course I opened the valve. After I drove about 75 miles I got a check engine light. Worried me, but the truck still ran good. When I returned home I took the truck to my local Truck shop. Found out the code was because you can’t fill up while driving at 60mph. Lesson learned.
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