Vette_5025

Hello,

When i start the car a noise from the serpent belt came.

I checked that the sound comes from one pulley, but i dont know what is this pulley.

Here ae the picture (marked with #1):

I toke a short video, few minutes ago. Here in Portugal is night so i toke a light to see better.

http://www.youtube.com/watch?v=BhIGcMurfT8


Someone have this problem?

After some miles the sound disapears.

Thanks

ByByBMW

I am fairly certain that is the water pump. Probably need to replace it. Do you have any coolant leaking in that area? If that is, in fact, the leaking pully then I would replace the water pump.

Vette_5025

Hello

thanks for your answer!

I think that i dont have any collant leaking. The sounds câmera when the engine is cool. Few miles ago the noise stopped.

Rich Mickol

I'm not a mechanic but 05's have had some problems with the crank bolt. The problem was corrected starting with VIN 11009. Search 05 crank bolt. Hopefully it's not your problem. Good Luck

Vette_5025

hello,

What is the Crank bolt?

Mi Vin is 1G1YY....103936

Thanks again!

R&L's C6

The crank bolt holds the harmonic balancer on. It's the pulley directly under the one you have marked. Check to see if it wobbles when running.Your car is in the affected range.

Vette_5025

Hello,

Thanks for your answer.

I toke a short video, few minutes ago. Here in Portugal is night so i toke a light to see better.

http://www.youtube.com/watch?v=BhIGcMurfT8

What do you think?

THanks again

R&L's C6

I would say that it is questionable. I also have an 05 in the questionable vin range. Mine does not wobble at all, or not that I can tell. I bought a small mechanics mirror so I can actually see that bolt and put a mark on it to see if it moves. Some one else with more experience in this matter will probably chime in. If it needs to be repaired it is a $1000 dollar job.

Corby

I'm fairly new to this forum but according to my local chev. dealer '05 models with a vin # prior to 111039 are subject to the crank pully recall.

Vette_5025

Thanks again!

I can tighten screw? to stop the wobble?

And the noise is from here or from the pulleys?

Thanks

SilverScorp

My LS2 was doing that also. The harmonic balancer was indeed wobbling...but not much. It was enough to get a sound from it, but it went away after the engine warmed up. Luckily I traded it in before any issues developed.

z06clif

Im fairly certain that you circled the Harmonic Balancer. if so Ive seen a few get changed out when I was working at the dealership.

Clif

Vette_5025

So you also have the noise before the car get warm, right?

im get crazy with it. In the monring the car dont produce the sound, but in the afternoon the noise comes!!

R&L's C6

They CAN NOT be re torqued, must be replaced with new bolt and DEW washer. It also was not a recall, but a TSB. I believe the noise comes from the belt not running true with the pulley.

Vette_5025

Do you know the part numbers?

thanks

R&L's C6

That is wrong. the item circled on the OP picture is not the harmonic balancer.

Corby

If your car is indeed one of the cars recalled and never repaired, I would get it fixed ASAP. If the balancer comes off it will do a lot of damage. Call the closest chev. dealer (whever that may be) and give them your vin #. They can tell you if the car was ever serviced for the recall or if there is a open recall.

Vette_5025

Do you have ideia of what i need to buy to replace it?

Imagine, Portugal dont have Corvette dealer, only in Spain (only 8 dealers in all country)

not08crmanymore

Read here.

Corby

"must be replaced with new bolt and DEW washer" I believe this is an involved process, not for the DIY. I would first call the chevy dealer in Spain to comfirm if your 'vette has ever been serviced for this problem.