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Chevrolet Express
Platform: GMT Van

Noise Noise Noise, Squeek around the Serpentine Belt, Need to locate the problem

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Old Dec 22, 2025 | 12:37 AM
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[QUOTE=DSD-2016;320470]So all of the easy stuff has been done. Replace Belt, Replace Tensioner, Replace A/C compressor, Replace Idler Wheel, Replace Alternator, So the only 2 pulleys not replaced are that for the fan, ( its not squeeking there ), and that for the Harmonic Balancer pulley and balancer.

Ok now here is a twist, since the truck has 165,000 miles on it, it has developed small leaks around the oil pan and around the cam covers. So since I do see slight wetness of oil on the balancer wheel behind the pulley for the belt, could the problem with squeaking be that ??? I am trying to test all things before actually replacing the harmonic balancer and the pulley in front of it that holds the serpentine belt.

I also feel I need a good boom microphone so I can isolate where the noise is coming from. Any and all ideas welcome, since the weather is breaking to the nice side and would like to get started on it.

2010 Chevy Express 2500 4.8 flex
/QUOTE]
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