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2003 Tahoe - 5.3L Engine Noise

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Old May 22nd, 2007, 1:13 PM
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Default 2003 Tahoe - 5.3L Engine Noise

When I accelerate onto the highway there is a noise that gets increasingly louder. It sounds like a high pitch whining, almost like a soundthat would be coming out of a synthesizer. I would appreciate any feedback on this. Thanks for your time.

Brett
Old May 23rd, 2007, 11:24 AM
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Default RE: 2003 Tahoe - 5.3L Engine Noise

had a F150 did this once the previous owner had put that fuel thing in his airbox, sounds like a turbo whine on a car, if you had it since new, check your airbox for cracks, or holes.
Old May 23rd, 2007, 10:32 PM
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Default RE: 2003 Tahoe - 5.3L Engine Noise

Another possibility is the serpentine belt idler pulley.
Old May 24th, 2007, 11:15 AM
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Default RE: 2003 Tahoe - 5.3L Engine Noise

wouldnt an idler pully more be a squeal?? I think like turbo whine when you say symthizer
Old June 12th, 2007, 3:55 PM
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Default RE: 2003 Tahoe - 5.3L Engine Noise

it is definately more like a turbo whine than a squeal. I can't find any modifications / holes / cracks in the airbox either.
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