yellow2007

Ok Guys I think I may have found the source of that oscillating vibration that I get around 65 and up. I did some searching and found my harmonic balancer has got a slight wobble to it and from what I understand it is a normal part failure on the C6. So while I wait to see if the Bars leak stop works on my rear main seal I thought I'd ask A) recommendations for a replacement and B) what the going rate is for swapping it out.

Thanks for all the help on the cruise control issue and seal recommendations......

doomi

Most folks are going to recommend either Powerbond or ATI. I chose Powerbond because I feel like the quality was really there for the price.

I got quotes ranging from $350 to $1100 for labor. I found that the best prices were typically performance shops who actually know what the job is and don't base it off of booked hours.
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zryder07

Removed

yellow2007

Thanks for the reply. The guy I will use is the same guy that dropped both my gas tanks to replace sending units, crossover pipe, fuel lines etc. Guy knows his stuff and is the one that will be doing my rear main seal.

Nelag

What was your mileage?

yellow2007

Yup...thats the one I just ordered along with the bolt and new belt.

doomi

That's the one I use as well. It will perform great. Wait until you feel how solid it is compared to the factory balancer.

I'm sure you just missed the 's' accidentally, but I want to mention it to be safe. I'd replace both belts while he's in there.

buckmeister2

If it is a vibration you can feel or hear, and your HB only has a slight wobble, I seriously doubt that is the source of the vibration. Did you look at the same time to see if any pulleys were wobbling?

Hope it works for you, though.

Turbo6TA

Get a new front crank seal too.

Nothing at all to change if your installing a new balancer.

yellow2007

I found the ribbed serpentine belt on Summit but I believe I need two belts. Anybody happen to know part numbers>

Turbo6TA

Yup ... you have 2 belts.

A long belt and a short one that just turns the AC compressor

HK770

Did you get a aftermarket bolt If not. There is a special way that the GM bolt is torqued. Make sure your mechanic knows the sequence to use.

doomi

Here are the two I purchased after a stupid amount of research. It took forever to find the correct A/C belt. There is a lot of conflicting info online.

Continental Elite 4040410 Poly-V / Serpentine Belt (A/C belt)
Continental Elite 4060798 Poly-V / Serpentine Belt

Not So Fast

Had mine done 6 months ago with PowerBond PB1117SS, new seal, belts, bolt etc. total was right at $900. Glad I did it now and not later
NSF

yellow2007

Got my list in hand and will be going to Summit tomorrow.......

Not So Fast

Word of advice, check it over well before doing it or taking it to a shop, I went thru 2 from Summit that had to be returned, wound up at Rock Auto
NSF

BigRuckus

I had mine replaced by a performance shop about a month ago for $650. I didn't want to mess with it and they said they've done bunches of them. Took them 3 hours and now I'm all good. I usually attempt this stuff myself but this one seemed worth the labor charge to not have to figure it out.

yellow2007

Man walking into Summit was like a gear heads home depot...................What a place.........

Walt White Coupe

A "slight wobble" will not cause a vibration that you can feel. Suggest you do further trouble shooting unless you want to spend ~$1000 and still have the original problem.

yellow2007

Well either way the balancer needs to be replaced. As for the vibration it comes and goes so I will look into the next. I appreciate your input though......