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    Fuel pump high pitch whine

    Hello i have a 01 yukon 5.3 V8 and so bought it with 2k miles on it in 01 currently have 76k miles since i had it i have changed about 2 fuel pump and i think the 3 rd is coming soon, when i start it there is a high pitch whine at all times since i have the truck if i leave the vehicle...

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