RickyCorvette90

Hi my american friends,
on my C5 Corvette i heard from the differential a noise like ''tac tac tac tac tac'' when front wheels are in understeer.
Someone can help me?Someone know what is this noise?

Sorry for my bad English,hope you understand!

Greetings from Italy

Riccardo

SaberD

Does your car have active handling?

Outlawtorn

I had a similar noise when reversing ( the car drove ok otherwise ) and it was my limited slip clutch plates ( that had shattered ) spreading there goodness all through out my ring and pinion...necessitating in a diff rebuild.

You probably have better luck than me so I wouldnt suspect thats your issue.

RickyCorvette90

Yes.

Thanks for answer my post.

RickyCorvette90

I hope that's not my problem...:nonfood:
If i change slip clutch plates,i anticipate the total breakdown??
Thanks for your answer

Outlawtorn

Im no expert so best someone else chimes in....If its slip plates that have gone bad, yes, diff needs to come out.. Has it recently had a diff oil change? Really need to have someone at a workshop analyze the fault for you and go from there.

RickyCorvette90

I buy my C5 from 10 days and i will change diff oil in the next day with the mechanic.
Problem is there's no mechanic specialized only on american cars.All they can do everything and no one can do anything

They do Fiat and other car,but if you bring them an american car looks like if you bring them a space ship

73n95

Limited slip rear ends usually require an additive, affectionately known as "gorilla snot" to keep the clutch plates from sticking. Plain old diff oil will not have this. Some of the better aftermarket brands are fine without the additive as its already part of the formula. Best to check with a dealer. Without it you will get a clicking sound when you make tight turns. This will destroy your diff it is not corrected.

RickyCorvette90

Thanks my friend!
I will change diff oil in this day.I hope it resolve.

bikeriderga

All of the diffs make some noise. However, the additive is key for these cars.
I would recommend using the GM brand. I tried aftermarket but had much more noise and I was using Amsoil.

feeder82

After you change they diff oil and add the proper amount of additive, drive the car in a couple of tight circles both directions to get the lube in the plates

RickyCorvette90

ok,i will do it.

Thank you

RickyCorvette90

ok,thank you.

In Italy is difficult to find GM brand.I try with another brand but if it make me some noise i'll order GM additive from U.S.A