Broken Harmonic Balancer - Questions - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-27-2006, 11:46 AM   #1
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Default Broken Harmonic Balancer - Questions

Hey All,

Well, the Bonne must have been jealous that I had my pickup in the shop getting some new parts yesterday, because on the way home from lunch, it started making a gawd-awful racket! Made the car sound like an old VW Beetle at idle, it was embarrasing.

Was diagnosed as a broken harmonic balancer. In a brief search, I've seen this mentioned in a few different posts. Just curious if this was a common problem for these cars, and curious if once replaced, I should worry about it happening again.

My car has around 108,000 miles on it right now. Did the balancer have a life-span? It'* not a part I would have expected to wear out, but obviously something went wrong there. Thanks!!
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Old 06-27-2006, 11:54 AM   #2
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It happens. There is a center hub and outer ring, connected by rubber, and the rubber degrades over time. The design of the replacement part is supposedly longer lasting.
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Old 06-27-2006, 09:14 PM   #3
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Same thing happened to my car. Replaced it and fixed it immediately. Was an easy task especially if you have access to a hoist. I took it to Midas, and it cost me $200 for the part, and $30 labor.
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Old 06-28-2006, 02:02 AM   #4
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I did both of mine at about 120k.
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Old 06-28-2006, 08:43 AM   #5
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It'* a rubber part with 12 years on it. Considering how low your mileage is..I'd think a little dryrot might have helped it along.

Not considered a wear item...but they do go.. replace and no more worries. It'* not an expected thing.
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Old 06-28-2006, 01:24 PM   #6
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I own two Bonnevilles of different generations, and I've done 2 harmonic balancers. Your not alone.
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Old 06-28-2006, 01:27 PM   #7
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Alright. Thanks everyone for the info. New one installed and ready to roll once again. Sounds like something I shouldn't bother worrying about after I finally pay my SHOP BILL off!!! :(

Wow!! That is an awesome price at Midas. Wish I would have known of a shop like that I could trust to do the job. It was. . . um . . . significantly higher. . . . at my dealer. Guess if I woulda had time to diagnose it myself more, I could have found someplace else to get it done, and saved a decent amount of $$$. Live and learn I suppose.
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