Harmonic Balancer - 2 part question
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
I was aware of this C6 issue since 2008/09 -
some guys replacing HB by 30k miles
MY 007 F55 MN6 started out sutbly at around 64k Dec 2011; 2 of my buddies ragged on me as soon as they heard it at idle/low speed.
I got it replaced very soon afterwards before it got incessant or noticeable at speed, OR, HB bearings froze the motor.
Instructor
Joined: Apr 2013
Posts: 128
Likes: 7
From: Godfrey Illinois
I always read stuff like this and worry. My question is, when something like this starts to become problematic how easy is it to hear that "chirp"? We're not driving around a car that typically is quiet to begin with. Start adding headers and aftermarket exhaust and are you really going to hear something like this if it starts to go???
Burning Brakes
Joined: Dec 2003
Posts: 974
Likes: 0
From: Boca Raton Florida
Mine went on my 2011 at 26k . Still under factory warranty . Thank goodness . When you hear the chirp , you know what it is . First they replaced the belt then the chirp came back a week later . I wouldn't worry too much . I would go to a corvette shop and put the ATI in and be done with it . If you don't abuse the car I don't think you should have too many issues . Good luck .
Drifting
Joined: Jul 2011
Posts: 1,258
Likes: 99
From: O'Fallon Illinois - Currently own a 2016 Z06 1LZ A8 Coupe
My car (06 with 13,854 miles) is currently at the dealer for the Harmonic balancer to be replaced which is chirping loudly. I contacted GM customer service today because this is a known issue with these cars. At one point there was a TSB out for the 05 cars. I don't expect something for nothing, but at the same time I don't expect to be jacked for money on parts GM knows are a problem. Currently waiting for customer service to call back regarding this. If you do a search many others have had this issue with cars after 05 & 06.
Hopefully it will last another 7 or so years...
MT
Instructor
Joined: Apr 2013
Posts: 128
Likes: 7
From: Godfrey Illinois
I have an '06 with just over 68,000 miles. I had my harmonic balancer and drive belts replaced this past March. It [HB] was borderline wobbling. My local Chevy dealership (which is also our Corvette Club sponsor) did the work. All told...$724.00.
Hopefully it will last another 7 or so years...
MT
Hopefully it will last another 7 or so years...
MT
