I just did the Summit Racing one on my 2005 C6. I could instantly feel it being smoother. I drive my Corvette daily and it has 85K on it. Tax and all it was $980.

Just replaced the shifter cable in my 2006 C6, A6 with 73K miles on it. After the cable replacement a quick check under the hood revealed a slight wobble of the harmonic balancer. A quick call to my Chevy dealer of choice in Rio Vista, Ca. and they are saying about 6 hours of labor to replace the harmonic balancer. And part of the sales pitch for the new GM harmonic balancer was that they have seen trouble with after market harmonic balancers also. About $1350 or so to do the job. No new belts, no new seal, no new tensioners, the only thing new was the harmonic balancer. So as I drive the car very little in the winter I think when the weather gets a bit better next spring I will be replacing the harmonic balancer myself. I guess I will learn to cuss like a sailor.

Thanks for the information. I had a 2005 C6, with the Lingenfelter supercharger installed. At 23,000 miles, I replaced my 1st harmonic balancer. I used a factory replacement. It failed again in 4000 miles. The 2nd time I used the ATI balancer. All is well now. What is upsetting, is that GM has several service bulletins out on this problem, but they don't stand behind the repair.

want to give you huge credit for this video! You nailed it spot on what needed to be done for my car and as a fairly new corvette owner it was a huge help. Thank you!

Great video! The OEM balancer on my C6z broke off its center hub. I also replaced it with an ATI Super Damper and pinned it to the crank with an ARP crank bolt

Great Video, i have a 2007 and did all you did and the following as well...waterpump/thermostat and an ECP alluminum radiator. Not hard, just labor intensive. Car is super reliable now.

Summit balancer $200, ARP bolt $37, PS fluid change $10, labor 6 hours@ $70/hr. Total $680 done,. Runs perfectly

I have replaced my harmonic twice. I think the first time it was Doran, the second time OEM. I saw another video that ranked the C6's and it said, i8f you want one go with the '2' engine. A GM engineer told this guy that the '2' was probably the best platform Chevy has ever made. He said you could turbo it, supercharge it, nothing seemed to phase it.I wish I knew that before I bought my car.

I once looked at a real nice 2001 C5 Convertible . Everything looked just right until I watched the motor running. The crank pulley was wobbling significantly. When I pointed this out to the owner - he looked at me with a strait face and said - there is nothing wrong with it according to Chevrolet. I told him he shouldn't be driving the car like it was. A month later he had put a TON of miles on it - I forgot the exact numbers but it went from like 89,000 to like 94,000 miles in just one month. I couldn't figure out how anybody could put that many miles on a car in so little time. Some people are just not good liars. Knowing how he blatantly lied about it - I passed on the car.

My harmonic balancer went out at 27,000 miles. Could not find a balancer anywhere so finally found a doorman brand. I replaced everything but tensioner mine was 875.00 total on 10/2/23. Saved the old one because I cant find them anywhere and going to take it to a machine shop to see if they can repair it. Good video, thanks Randy

Great video sir! I have used Masterworks for my '99 Coupe on few occasions, and have been completely satisfied every time. Their current labor price is now $135 hourly. Greetings from Shelby Twp.!

You are definitely a die hard Corvette guy and I love it. I have learned a lot of information from you about vets in my quest to buy my first Corvette. So far we are looking at buying a used 2007 or newer thanks to your KZfaq channel. And I believe congratulations are in order since I think you mentioned somewhere else that you just took possession of your brand-new 2023 vet. I love the way you’ve had Corvettes for so long.

Masterworks is great. Hope your satisfied with everything. Brian is good people.

beautiful video, going to look at an 08 c6 today, will definitely look out for wobbles on the damper

I changed my damper with an ATI unit, with an ARP bolt. I also replaced the front oil seal, all belts, hoses, and tensioner. It took all of six hours, dropping the engine cradle to remove the steering rack. The only thing that I would have done differently, is replace the plastic power steering pulley with a steel one.

Summit Racing also makes a great balancer for around $200. I also used an upgraded ARP balancer bolt. Additionally, I purchased a pin kit & had the balancer drilled & pinned to the crankshaft, as the balancer spinning on the shaft can become a problem as well. Money well spent while you're already in there. Hope this helps.

I did that job myself. It was not as easy as some say. If you are not experienced with turning wrenches, don't do it. However I did succeed. I've put over 2500 mi since and it's working. 700 in labor . It's worth it. As long as they are good. Problems with other components may arise if not done carefully.

Just tuned in and was happy to see Masterworks mentioned. They do honest, fair, and great work. Thanks!

got mine done 2 weeks ago from a shop $400 labour you do not need to remove the rack there is a way to do it dropping the cradle takes about 2 hours with a hoist the shop quoted the 6 hour way and i asked them if they would mind watchin a video and they did and the car was dropped off at 7 am they started the job at 8 am and it was sitting outside done by 11 am c6 corvette

dealer rates in South Florida are 220 per hour labor. thank you for the breakdown i think other then labor costs at today's rate you are right on the money. i was charged 2400 at the local dealer labor was 700 more then you estimated and parts could have been a little more expensive as well. i had no idea what a harmonic balancer was but heard a noise and noticed a belt wobble.

Thank you! A lot of videos out there on doing it yourself, but not many on having a shop do it for you, so this was helpful! Want to get a rough estimate for my c5

This is a great video. Tonnes of info. I need mine done on my 2012 and this helps a great deal. thanks

Well done video!

Thank you for sharing this information. Very informative details.

Good job on the video. I had my balancer bolt and belts replaced for half that price tho.

You did an excellent job putting this video together! This Friday, i will be buying a 2013 grand sport. Hopefully, the hb is good on this car! I didn't think of checking it while i looked the car over.

Thanks awesome video..just purchased a 05 c6 27000miles same color as yours..I will have mine replaced...keep up the awesome videos

Great Video Thanks for all the info

2010 With 88k on it. Having HB replaced thru aftermarket warranty with OEM as that is what warranty covers. Should be done today!

The one thing I didn’t see and I would recommend is pinning the balancer. It about a $75 kit and keeps it from walking off the crank.

Think you got taken on the labor charge to replace the tensioner n idler pulley. With it apart already it should have taken the 5 minutes to change

Great informative video, Thank you!

So far, I haven't seen a wobble. I've been watching the weaknesses of the C5. I have a '99 convertible with 7700 miles. Great miles but age takes it's toll.

Excellent coverage and informative information. Do you have any referrals and/or know any independent shops in Southern CA. Thanks!

Well, just saved myself appr. $ 2000 CDN by DIY.. I watched many different vids on this before tackling the Job. Strangely , one part nobody ever mentions ,when I pulled the original Damper I found a shim which has a rubber piece on the circumference., it’s a $ 28 CDN part. It does help to cover the keyway all of the aftermarket Damper have instead of having to mess with ATV filling the Keyway.. My car is a ‘07 Z51 convertible , so I’d assume that “Shim “ will be found on all corresponding yrs C6’s.

I am planning to replace mine soon. I am thinking of doing it myself. I have already got the brand new ac delco balancer, the crankshaft seal and bolt. Note: my original balancer has lasted over 206,000 miles, 19 years. So I am sort of sticking with the oem parts. I have also been researching how to do it, and gathering special tools. I have a removal tool set, an installation tool set, and a special tool to hold crankshaft still, while torqueing bolt. The main thing that is worrying me is the extreme torque required to be used. what if something breaks. What if something goes wrong. If you hire a shop, how can you be sure any corners are not being cut? if job not done properly, there could still be wobble, even with a new balancer. One great way to ensure it is done right is to do it youre self. Already replaced other pulleys and tensioners, and belts many times over the years. That part is easy. I have done the steering pump, and alternator decoupler pulley, before using a special tool kit for each before.

I found a 2007 with 18k miles. Went to teat drive the car and noticed the wobbling HB. I told the GMC dealer they need to replace it or I will not buy the car. What do you think. I could also ask them to discount the car another $1600 and get it fixed. They will only use GM replacements.

Great video on this. Replacing the HB seems to be a given on the LS motors used in the Corvette. This why I am looking for a car this was already done on. Curious if the Camaro V8’s have same issue?

My dad had a stroke, In rehab- I got his low mileage 06 LS2 vette out to clean up- shredded a belt, then shredded another- balancer going out

Thank's tom🤙

Your video of the balancer dancing around looks a lot like mine. 😮 I was planning to replace it anyway. At $1,500 rounded up, it’s almost a no brainer 🧠. What’s the benefits to the non OEM balancer? 😊😅

Did you pin the new balancer? I would have

I'm original owner of my C6 with 58K miles on it. So far the HB is OK. I must of got lucky.

Great video! I took alot of screen shots! My 05 Vette has the wobble. I have a Fluidampr on the way, but I'm just curious. Did you stop driving it after noticing the wobble? I won't be able to get mine changed for a couple of weeks and still want to drive it. Nice and easy of course. Nothing over 3k RPM.

Im getting a pulsating vibration at 74mph+ , could this be the culprit? Changed every chassis component known to man…tires..balance… vibration still there

Just had mine done with OEM part on a 2002 model with 47000 miles.

Aww Damn it i didn't know about the crank seal

Six speed manual 2007 c6 41000 miles ,replaced with super damper and all the other components, had to buy 125 dollars in tools ,chevrolet dealer wanted 2700 to do job,took me all day to replace for first time 12 hours, love the performance of car but after seeing the possibility of having to replace any other part of car ,and the compacted engineering components IM GOING TO SALE IT AND BUY A BICYCLE, after working on my corvette you will cuss like a sailor

What a great deal I would pay that no problem give them a $500 tip

how does the harmonic balancer sound and work now, after doing this video?

I have a 2007 bought new, never raced, and has 33,127 miles as of today. Always dealer maintained. Would you recommend replacing the HB along with the other components as a preventive measure before failure symptoms? After having owned 5 Corvettes, this will be my last, and I plan on keeping it till I can no longer get in or out of it. We will be taking several trips up the coast this spring and summer, and don't want any on the road problems. Thanks

Cost alot to own a Vette. I'll be sure to do this. M6 2005 base grandpa vette has 25k softly driven miles on it. Should I do it now or wait?

Do you still have the C6, and if so, would you consider selling it. Your car is exactly what I’m looking for…Thanks, Jeff

Hey I am looking to purchase a c6 ls2, current owner is getting hb done there was no noise but he caught the wobble. Would you advise to still buy it or just stay away from it? Thanks

My 07 80k mile is getting a non oem next thursday.

Anybody know any good speed shops in northern Illinois

Those labor prices to replace tensioners are high

Does this happen to all LS engines, do they all have a similar design? I see the HB for the supercharged engines have a keyway a drift, on a standard LS can you machine a keyway while the engine is in the car and put in a key and drift to "beef it up?" I personally love the C-6 body style, I think it is the best looking Vette of all time. I really would like to buy one before they start appreciating out of sight. Then my commons sense and experience tells me to remember - GM products are junk and to stay away.......

I’m temped to do it myself as I have done my brakes and spark plugs and oil change on my corvette, I’ve even replaced the window motor but tbh it does look intimidating

Mines 16k miles 2007 ls2 and this is happening f…..

Nothing like being able to choose a $500 part over a $90 part must be nice

Yup those c5 and c6s are money pits especially if you dont do the work yourself!........i brought a c5 convertible for 10k which is pretty cheap and the previous owner showed me 6k worth of reciepts which included the new balancer.....Now I have the car and i am getting codes and the traction control doesnt work, rear end is leaking, ac vent issues but i do much of the work myself!..........c5s and c6s are cool cars but they are junk, typical gm products!.......i dont care if i get heat for telling the truth!

$1500 is not bad. I expecting a lot worse

$725 labour to replace a couple pulleys? Wow, you guys are suckers! That's an hour job including clean up and an oil change. The LS engine is the easiest engine in the world to work on.

I think you got ripped off. The standard hours of replacing the balancer and seal is 4.4 hours

That’s why you don’t buy a vette. Constant money pit 💰

I currently came into ownership of a 2001 c5 convertible and I'm in the Toledo/Detroit area and I appreciate the info on the shop you used. My dad passed away from covid and he was doing some exhaust mods along with some upgrades and I was questioning what reputable shop to use. Thank you again, great video🤙