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Originally Posted by BigPete
2200 miles on mine and I hear the same high pitch whine. I would say almost similar to that heard on turbo diesel engines. Sounds possible like a restricted exhaust on mine. Well, if that is the case that will cease when the banks is installed...
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I just got my 04 KC 4x4 no offroad Sunday and I have the exact same noise it is driving me nuts. I only have 350 miles on it. The noise is exactly as you describe, maybe even an electronic type high pitched buzz/whine.
The rear diff was low by about a quart (7/04 build yikes!). Filling it had no effect and the noise is comming from the front of the truck, engine or dash. The tires are all at 35 psi.
The issue only occurs durring normal driving with my foot on the gas, low speed (30) to freeway speeds (65-80).
Did anyone get this fixed at the dealer or have any ideas. I know if I take it in they will say it is fine and think that I am crazy or stupid.