harmonic balancer/damper
Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
harmonic balancer/damper
OK...lots of threads on this, but what I want to know is has GM updated this part. If I get a new stock GM part is it the same POS thats wobbling in my car now?
Burning Brakes
Joined: Apr 2006
Posts: 850
Likes: 10
From: Athens OH
Buy an aftermarket and be done if you are out of warranty and paying out of pocket.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
Buy an aftermarket and be done if you are out of warranty and paying out of pocket.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
Burning Brakes
Joined: Apr 2006
Posts: 850
Likes: 10
From: Athens OH
Sure responses will follow shortly since I have seen a lot of people posting about this since I have been on the boards for the last year. Good luck with your repair, sure the forum guys will have better advice for you.
Melting Slicks
Joined: Sep 2007
Posts: 2,599
Likes: 1
From: Long Island, Nassau County New York
My car is at the dealership awaiting a new balancer from GM. As per the dealer, there are other balancer in stock at other dealerships, but since they have been on the shelf too long, GM want to use a "fresh" balancer as they believe that the existing stock may also be bad.
PM me if you want more details of what I'm going through.
PM me if you want more details of what I'm going through.
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
After making millions of engines without this problem I never understood why GM abandoned the keyway but all of the Gen III and Gen IV V8 engines use a press-fit damper with no keyway. This has been the case since the LS1 was introduced in 1997. With the harmonic balancer a friction washer became a production part in the 2006 LS2 and LS7 engines (and I suspect it was the 'fix' in later model 2005's as well).
FWIW...it's not ideal but a slight amount of wobble may be within 'acceptable' parameters. If the crank-pulley hasn't loosened-up and walked (if it's on tight) your car may continue to run just fine with a slight wobble. If you're going to replace it I would (as mentioned) go with a better ATI balancer. Using a keyway and pinning the crank might be something else to think about. It's required for forced induction applications and highly advisable for high power naturally aspirated applications as well.
FWIW...it's not ideal but a slight amount of wobble may be within 'acceptable' parameters. If the crank-pulley hasn't loosened-up and walked (if it's on tight) your car may continue to run just fine with a slight wobble. If you're going to replace it I would (as mentioned) go with a better ATI balancer. Using a keyway and pinning the crank might be something else to think about. It's required for forced induction applications and highly advisable for high power naturally aspirated applications as well.
Team Owner
Joined: Aug 2004
Posts: 24,129
Likes: 1,038
From: The Beautiful Pacific Northwest
St. Jude Donor '05-'06-'07-'08-'09, '14-'15-'16-'17-'18
Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
PM sent
My car is at the dealership awaiting a new balancer from GM. As per the dealer, there are other balancer in stock at other dealerships, but since they have been on the shelf too long, GM want to use a "fresh" balancer as they believe that the existing stock may also be bad.
PM me if you want more details of what I'm going through.
PM me if you want more details of what I'm going through.
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From: Santa Rosa Beach FL
Race Director
Joined: Oct 2010
Posts: 14,475
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From: Las Vegas NV
Buy an aftermarket and be done if you are out of warranty and paying out of pocket.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
ATI is the standard out there and if it can run on daily 1000hp car it will live forever on our cars. Pricey but do it once and done. My friend runs a performance shop and this is all he puts on the customer cars, never seen one fail yet.
Instructor
Joined: Jan 2012
Posts: 128
Likes: 17
From: Treasure Island Florida
St. Jude Donor '12-'13-'14
I had my 07 coupe at the dealer today for the "wobble", they are ordering a new one and fixing it under the certified warranty I have. I use Stingray in Palnt City, Fl. They are a huge Corvette dealer and treat their customers well.
Race Director
Joined: Dec 2010
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Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
Race Director
Joined: Dec 2010
Posts: 18,098
Likes: 1,597
No question its a poor design, just saying GM customer service on the forum has no authority to answer such a question.
Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
Race Director
Joined: Dec 2010
Posts: 18,098
Likes: 1,597
I feel your pain. Before I bought my 2011 I had a 2005 with the vin number under 11039. They had a tsb out for the harmonic balancer bolt falling out on them under that vin #. I worried about that sob falling out all the time and since it wasn't a recall you just hoped it didn't happen.
Thread Starter
Racer
Joined: Oct 2010
Posts: 438
Likes: 105
From: calgary alberta
So the final offer from GM Canada is 25% off the estimate of 12-1300 total. I'll get it done, pay under protest and sue in small claims court for a refund AND damages. I think I have a pretty strong case.
GM CUSTOMER SERVICE SUCKS!
GM CUSTOMER SERVICE SUCKS!
Race Director
Joined: Mar 2010
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@montereyredvette,
I have received your private message and will be responding shortly. Thank you.
Tricia, Chevrolet Customer Service.
Intermediate
Joined: Mar 2012
Posts: 25
Likes: 0
Harmonic Balancer
I have an '06 at the dealer right now getting a new balancer. They are waiting for a new/improved part that they say will cure the problem. I just bought the car (two weeks ago) and the extended warranty is paying. Whew!!