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i am not a mechanic at all but after reshearching my fuel system prtobs on this hunk of junk your most likely prob is the connector that comes through the floor pan behind drivers seat under carpet thaey loose tension and you end up with no power or ground there my connector actually corodide and the pins in it fell off hopefully that will help you seems to be cause of alot of fuel related probs on this vehicle from all the chats and blogs ive seen good luck

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Q: 1999 Pontiac Montana gas gauge does not work what could be the problem?
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