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The most comon problem is a bad electrical connecter above the fuel tank. New electric fuel pump works for a day or two and leaves the truck stranded in a driveway or parking lot. Just get a new fuel pump electrical connector ( the one above the fuel tank) The old connector fails because re-inserting the pins after the fuel pump job pushes them in and things work for a day or two because the pins touch end to end then sort of melt apart with no problem visable on the bad waterproof connector. During startup the truck with a new fuel pump gets little or no fuel and just cranks but won't start. The connector in question is located above the fuel tank in the electrical feed line to the fuel pump. Outside of connector may even look new while the pins inside have been damaged. Some times the pin receptor slips back into the female side of the connector. A new connector carefully installed will fix the problem. Happy Motoring, John Reimer Quakertown, PA

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Q: 2001 gmc Yukon XL wants to start but will not just had fuel pump and filter replaced?
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