C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Harmonic Balancer

Thread Tools
 
Search this Thread
 
Old Mar 28, 2012 | 02:47 PM
  #1  
PUREVOL's Avatar
PUREVOL
Thread Starter
Advanced
10 Year Member
 
Joined: Nov 2009
Posts: 92
Likes: 1
From: Chesapeake VA
Default Harmonic Balancer

So apparently there's no one in the country with a harmonic balancer for my C6.
Reply
Old Mar 28, 2012 | 02:52 PM
  #2  
wysiwyg's Avatar
wysiwyg
Racer
10 Year Member
 
Joined: May 2008
Posts: 342
Likes: 1
From: San Antonio TX
Default

Originally Posted by PUREVOL
So apparently there's no one in the country with a harmonic balancer for my C6.
I had mine replaced under warranty in early March and did not have an issue with parts availability.

Are you looking for OEM?
Reply
Old Mar 28, 2012 | 07:43 PM
  #3  
ricknyc23's Avatar
ricknyc23
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2007
Posts: 2,599
Likes: 1
From: Long Island, Nassau County New York
Default

Funny, Im having the same issue. The car is at the the dealership for the balancer under warranty repair...
Reply
Old Mar 28, 2012 | 09:06 PM
  #4  
Gene Culley's Avatar
Gene Culley
Premium Supporting Vendor
 
Joined: Nov 2006
Posts: 30,317
Likes: 165
From: Reading PA
Default

I assume this is for the LS2. I just looked and there are plenty of them to be had on a **** Case. See your dealer for what that means.
Reply
Old Mar 28, 2012 | 09:51 PM
  #5  
sonof2005owner's Avatar
sonof2005owner
Cruising
10 Year Member
 
Joined: Mar 2012
Posts: 13
Likes: 0
Default Replacing 2005 harmonic balancer

Anyone have any experience replacing harmonic balancer? I see them listed on various sites. Hard for shade tree mechanic to replace? What is cost for dealer to do? Have done this repair on other cars before.
Reply
Old Mar 28, 2012 | 09:53 PM
  #6  
sonof2005owner's Avatar
sonof2005owner
Cruising
10 Year Member
 
Joined: Mar 2012
Posts: 13
Likes: 0
Default

Have seen them on ebay, various auto parts web sites. You've googled no doubt. Surprisingly, did not see them listed for sale on Corvette specialty catalogs.
Reply
Old Mar 28, 2012 | 10:00 PM
  #7  
LPT2011's Avatar
LPT2011
Instructor
 
Joined: Jul 2011
Posts: 199
Likes: 1
Default You better have the right tools ..

Originally Posted by sonof2005owner
Anyone have any experience replacing harmonic balancer? I see them listed on various sites. Hard for shade tree mechanic to replace? What is cost for dealer to do? Have done this repair on other cars before.
Just had mine done last week at the dealership. I went over in process and was very glad a technician was working on it. Looked very complex ... plus under warranty so why try to do it yourself?

As to availability ... the dealership had to have it shipped overnight b/c there were very few left and they didn't want to take a chance that someone else might get it before me !!! Work equivalent was 5 hours labor, if I remember correctly.

Good luck.
Reply
Old Mar 28, 2012 | 10:10 PM
  #8  
Dragracer_Art's Avatar
Dragracer_Art
Burning Brakes
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 972
Likes: 11
From: Dawsonville, GA
Default

After all these years, why hasn't GM done something to recall and correct these problems ? This has been going on for HOW many years now with how many cars ???

There is NO WAY I would put another GM balancer back on the car.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-1

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-2

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
story-3

7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

 Pouria Savadkouei
story-4

How Likely Are These Five 2027 Corvette Rumors to Be True?

 Brett Foote
story-5

9 Best Corvettes You Can Buy for Half Price (& 1 You Should NEVER Buy!)

 Joe Kucinski
story-6

8 Very Best Corvettes of Amelia Island 2026

 Joe Kucinski
story-7

Top 10 WORST Corvette Engineering Failures of All Time!

 Joe Kucinski
story-8

10 Records the C8 Corvette Generation Has SMASHED (& 1 Glaring Failure)

 Joe Kucinski
story-9

7 Wildest Corvette Concepts Ever Made

 Brett Foote
Old Mar 28, 2012 | 10:30 PM
  #9  
PUREVOL's Avatar
PUREVOL
Thread Starter
Advanced
10 Year Member
 
Joined: Nov 2009
Posts: 92
Likes: 1
From: Chesapeake VA
Default

Found some online but the extended warranty co. Won't pay for it.
Reply
Old Mar 29, 2012 | 01:33 AM
  #10  
DSOMC6's Avatar
DSOMC6
Race Director
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Community Builder
 
Joined: Dec 2005
Posts: 11,743
Likes: 106
From: God's Country, ID
Default

Originally Posted by Dragracer_Art
After all these years, why hasn't GM done something to recall and correct these problems ? This has been going on for HOW many years now with how many cars ???

There is NO WAY I would put another GM balancer back on the car.
Exactly! I forsee a lot of folks paying out of pocket once the warrantys start ending.
Reply
Old Mar 29, 2012 | 05:08 AM
  #11  
Wild's Avatar
Wild
Instructor
 
Joined: Feb 2010
Posts: 126
Likes: 0
From: Granbury Tx
Default

Mine came off 4 times within a couple months all fixed under warranty.. finally it fell off again and I pulled the motor and turned it into a 402. The cam bolts had actually backed out and the timing cover was the only thing holding them in... all of this happened within 20k miles. Good luck with your balancer and if it does it again, crank pin it.
Reply
Old Mar 29, 2012 | 06:14 PM
  #12  
ricknyc23's Avatar
ricknyc23
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2007
Posts: 2,599
Likes: 1
From: Long Island, Nassau County New York
Default

Thanks Gene.
As it turns out there are plenty of them. According to the dealership, GM won't let them use any of them because they are all a few years old and are probably still problematic. I am now waiting for the company who makes them for GM to manufacture one to send it to the dealer for the warranty repair.


Originally Posted by Gene Culley
I assume this is for the LS2. I just looked and there are plenty of them to be had on a **** Case. See your dealer for what that means.
Reply
Old Mar 29, 2012 | 10:20 PM
  #13  
Thomasmoto's Avatar
Thomasmoto
Team Owner
10 Year Member
Community Builder
Liked
Top Answer: 1
 
Joined: Aug 2011
Posts: 21,577
Likes: 1,613
From: GREER SC
Default

What years or engines are having these problems and what are the symptoms?
Reply
Old Mar 30, 2012 | 05:53 AM
  #14  
CMY SIX's Avatar
CMY SIX
Safety Car
 
Joined: Feb 2007
Posts: 4,684
Likes: 107
From: Opelika Alabama
Default

Originally Posted by LPT2011
Just had mine done last week at the dealership. I went over in process and was very glad a technician was working on it. Looked very complex ... plus under warranty so why try to do it yourself?

As to availability ... the dealership had to have it shipped overnight b/c there were very few left and they didn't want to take a chance that someone else might get it before me !!! Work equivalent was 5 hours labor, if I remember correctly.

Good luck.
GM manual says 3 hours simple job, not complicated at all if you can get under the car, tell the shop you want two hours labor back, my 06 I'm replacing with a Powerbond 1117-SS
Reply
Old Mar 30, 2012 | 05:56 AM
  #15  
CMY SIX's Avatar
CMY SIX
Safety Car
 
Joined: Feb 2007
Posts: 4,684
Likes: 107
From: Opelika Alabama
Default

Originally Posted by Thomasmoto
What years or engines are having these problems and what are the symptoms?
the biggest problem is they use the Balancer as a pulley also, the 05's had a bad bolt. they will all start to 'look" like there wobbleing
Reply
Old Mar 30, 2012 | 08:17 AM
  #16  
gotjuice?'s Avatar
gotjuice?
Le Mans Master
Supporting Lifetime
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2004
Posts: 5,972
Likes: 47
From: NCM Lifetime#2195 Bulverde, Texas 78163
St. Jude Donor '13
Default

I installed a couple last week with no issues getting the GM part.
Reply
Old Mar 30, 2012 | 09:39 AM
  #17  
ricknyc23's Avatar
ricknyc23
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2007
Posts: 2,599
Likes: 1
From: Long Island, Nassau County New York
Default

As I said, there are plenty available. The problem is, GM wont let the dealership install them because they have been sitting on the shelf for three or four years and those units are still problematic so GM is having one maufactured for me.


Originally Posted by gotjuice?
I installed a couple last week with no issues getting the GM part.
Reply

Get notified of new replies

To Harmonic Balancer

Old Mar 30, 2012 | 11:22 PM
  #18  
Gene Culley's Avatar
Gene Culley
Premium Supporting Vendor
 
Joined: Nov 2006
Posts: 30,317
Likes: 165
From: Reading PA
Default

Originally Posted by ricknyc23
As I said, there are plenty available. The problem is, GM wont let the dealership install them because they have been sitting on the shelf for three or four years and those units are still problematic so GM is having one maufactured for me.
Sorry to say, but this is not true. The balancers have changed part numbers for various reasons since inception... so the current part number would be the latest. They're not going to build this part number any different today then they would have a year ago. Sorry, but I guarantee you they aren't waiting for GM to make another one. I have heard a lot of stories, but this one is really funny lol. Not making fun of YOU, but your dealership has lost it.
Reply
Old Mar 31, 2012 | 09:09 AM
  #19  
Gering's Avatar
Gering
Tolero Apto Victum
Supporting Lifetime
15 Year Member
 
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Default

Originally Posted by Thomasmoto
What years or engines are having these problems and what are the symptoms?
My 07 had the wobbles at about 40,000 miles on it, so I had an ATI unit installed. Now with over 130,000 miles on the car, I have had zero problems with it. After market is the way to go IMO.
Reply
Old Mar 31, 2012 | 09:50 AM
  #20  
QCVette's Avatar
QCVette
Le Mans Master
15 Year Member
Active Streak: 90 Days
Liked
Top Answer: 3
 
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
Default

I can't believe that this has been a problem for so long.

It was a problem with the C5's and still happens on the C6's. It sounds like the stock GM ones are junk. Go with the aftermarket. I used a Powerbond one on my C5. It was the cheapest one that I found, and still it outperforms the GM one without wobble.

Why doesn't GM do something about it and get a good balancer?
Reply




All times are GMT -4. The time now is 11:06 AM.

story-0
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-1
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-2
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE
story-3
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE
story-4
How Likely Are These Five 2027 Corvette Rumors to Be True?

There may be some big changes on the horizon.

By Brett Foote | 2026-03-18 06:55:42


VIEW MORE
story-5
9 Best Corvettes You Can Buy for Half Price (& 1 You Should NEVER Buy!)

Slideshow: 9 best Corvettes you can buy for half price (and 1 you shouldn't!)

By Joe Kucinski | 2026-03-17 10:20:26


VIEW MORE
story-6
8 Very Best Corvettes of Amelia Island 2026

Slideshow: 8 best Corvette of Amelia Island 2026

By Joe Kucinski | 2026-03-11 09:28:52


VIEW MORE
story-7
Top 10 WORST Corvette Engineering Failures of All Time!

Slideshow: Top 10 worst Corvette engineering failures

By Joe Kucinski | 2026-03-10 17:38:03


VIEW MORE
story-8
10 Records the C8 Corvette Generation Has SMASHED (& 1 Glaring Failure)

Slideshow: 10 records the C8 Corvette generation has SMASHED (& 1 glaring failure).

By Joe Kucinski | 2026-03-02 11:16:36


VIEW MORE
story-9
7 Wildest Corvette Concepts Ever Made

Out of the many Corvette concepts that exist, these are by far the wildest of the bunch.

By Brett Foote | 2026-03-02 11:03:54


VIEW MORE