Noise underground, diff

[jsd]

Hi guys

Sorry for the bad videos, but the impotant is the sound of the videos.

This vids i took one month ago. I think its the diff, the car was two weeks by the dealer, because of this problem. He changed the diff fluid and was looking other possibilitys. Next week the car goes oncevagain to the dealer. But my question on you, somebody have an idea what this is, it comes from rear. Its not the brakes for sure.

Please take the time and listen it on my videos.

Thanks

http://youtu.be/un5e6WoDdbk

http://youtu.be/gy6asZvOURs

I here it always louder.

[Oneslowz28]

That would drive me NUTS!!!

Its sounds too slow to be rotational. (driveline) Does it change when applying the clutch?

[ntrimm]

Dang...That would drive me insane for sure. Im with **********..it sounds too slow to me to be drivetrain related. However, it does get faster and slower (at least what I heard) as you slow down the car or speed up the car. My wife's Mercedes E350 had a similar noise but more whining. Ended up being the tranny and they replaced it under warranty. I would definitely take it to dealer and tell them to keep it til its fixed or you have a new one. Good luck

[jsd]

Thanks

The noise dont change when i push the clutch.
When the car is cold, the first 2 or 3 miles i never hear it.
The noise change his intensity between 1 - 55 km/h. After 60 i dont hear it.

I bring the car to the dealer. The last time i receive my car with a big scratch in my rim. But he says, its not doing by him.

[joes407]

almost sounds like a wheel bearing that's low on grease

[djnice]

The rim is probably from going through the car wash.

[jsd]

I wash my car withnmy hands, my z never see some carwash

[jsd]

Unbelieveble, i was make a little tour before, the noise is going.
We have a temperature of 16 celsius before.

The vids i make on some hot summerday.

What you guys think. Is this possible, something then react like his with more heat. I dont understand, my car drives me crazy

Who the diffcool system works

[M502]

Let them check your rear bushings, I had somthing similar and the dealer solve it

[BlackinBlack]

Originally Posted by jsd

Thanks

I bring the car to the dealer. The last time i receive my car with a big scratch in my rim. But he says, its not doing by him.

Get with GM. I had a dealer door ding my car. They attempted to blame me. I provided feedback to GM. Like magic the dealer called and fix the damage.

[jsd]

Thanks a lot for your inputs

I am in switzerland, gm is not interessed to help me with my car, chevrolet switzerland also. My dealer has no problems to do something, but its not so easy to find this problem

Which are the rear bushings? Sorry for the question, but i am not sure which you mean.

[ZL1-V]

I have the same noise! Starting to bug me. To my ears as joes 407 stated it sounds like wheel bearing as is doesn't change pitch. The other thing is my car is lowered with Pedders and the "bushings were replaced. Isn't a bushing noise different than this? This sounds rotational? I guess I'm off to the dealer tomorrow with mine.

[jsd]

@Zl1-V

Please let me know, when you solved the problem. My car is not done.
I hope my mechanic solve this in this year.:frusty

[ZL1-V]

Originally Posted by jsd

@Zl1-V

Please let me know, when you solved the problem. My car is not done.
I hope my mechanic solve this in this year.:frusty

I will update the result of going to the dealer.