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Re: 01 c1500 4.3 fuel spec
Posted to Technical Discussion Forum on 4/9/2012

While you're changing the pump, check the fuel for ethanol content. All Delphi pumps are specced to no more than 20% unless flex-fuel. I've run into this a few times, and the failures were either poor grounds or excessive ethanol in the fuel. A Delphi rep at W... Login to read more.