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Old 01-27-2013, 01:05 PM   #5
pobrokefolk
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Join Date: Nov 2012
Location: Saint Helens, Oregon
Posts: 9
Re: 1979 gmc high sierra fuel issue

I changed out the fuel filters. Check the pump, which come to find out is an aftermarket electric pump. It pumps fine. Went under and blew through the lines and I think I found the issue. I think its the part where the two tanks meet. Not sure what it's called tho. I think that piece failed. Thanks for the information.
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