When I turn corners I frequently (but not always) hear a moaning noise that I suspect is coming from my rear end... It's relatively low pitch but doesn't sound like grinding.... More like rubbing... I have a stock 2.73 rear end and my car is stock... I have about 130k miles on the Z.

Any ideas what the sound may be? What should I inspect?

Thanks,
Steve

 

Sometimes that noise can come from the positraction unit. It can sound like a low growl or moan to a snapping and clanking sound. Try changing the lube and make sure you add some GM posi additive.

 

Thanks Rob, I'll stop by the local GM dealership and pick up a bottle of the limited slip additive... I'm due for an oil change anyway, so I'll do both at the same time.

Thanks again,
Steve

 

Same thing happened to me when I changed gears, put some additive in it and it fixed me right up

 

if its not that, it may be the inner or outer bearings too ya know?