Question about 2002 Chevrolet Astro

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2002 Chev Astro 4.3L Replaced fuel pump assembly and harness. When I filled the tank, gauge showed 3/4 of a tank, then after driving about a mile the gauge read full. After driving 5 hours, the gauge reads 7/8 of a tank. I know there is a problem, but is it the sending unit? The parts hours will warranty the assembly, but I don't want to have to drop the tank again. Any recommendations?

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It sounds like the wiring harness that the fuel pump assembly plugs into. Check to see it there is a replacement one available.

Posted on Apr 24, 2010

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