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Old May 19, 2020 | 09:38 PM
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Default 99 Corvette

Hello,
I have a 99 corvette with 46k. It recently started making a squealing noise. Sounded like a belt. I changed out the idler pulley, tension pulley and the serpentine belt. Noise is still there. I have researched it and sounds like it may be the harmonic balancer. Wondering if anyone here has had any experience with this or had the same issues and what the fix was, before I go replacing unnecessary parts.
Thank you in advance
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Old May 20, 2020 | 05:18 AM
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Moved to C5 Tech.
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Old May 20, 2020 | 08:07 AM
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Just did mine. These two threads should help you out.

​​​​​​https://www.corvetteforum.com/forums...post1601527078

https://www.corvetteforum.com/forums...post1601522988
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Old May 20, 2020 | 10:10 AM
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Not sure why the harmonic balancer would make a squealing noise but at 21 years of age, it is probably due for replacement. The original on my '98 recently failed at 44K
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Old May 20, 2020 | 08:00 PM
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Replacing the harmonic balancer is a task hoping it is it. Hate to replace that and not fix the problem
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Old May 21, 2020 | 09:32 PM
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Default 99 Corvette

Have you taken the belts off and started it to see if it still squeals?
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Old May 21, 2020 | 10:46 PM
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I have not tried taking the belts off and running it. Not overly mechanically inclined. I can figure most things out on my own but this ones bugging me. Will that harm the car in any way running it like that? Along with if it still squeals what would that pose the issue would be?
Thanks
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