Rear End Noise

[NSweet]

Alright... I am get a wierd vibration and noise only when I turn slowly and only after the vehicle has been driven for a length of time.. I just had a rear end service done about two months ago and they swear they put in the correct fluids.. they did a "Full Diff service" on it...I find it highly unlikely.. I never had this noise when I was running Royal Purple Diff fluid...Now..It chatters like like a chipmunk in the Icebox!!

I called the shop today and asked what type of fluid they used.. They stated 75-140w... so I told them about my issue they of course said I need it rebuilt...

Any advice????

 

[Limited02]

This is a common issue and I bet you have the 3.73LS rear. Most likely they didn't add a limited slip additive and that usually solves the problem.

I had the same issue, changed the fluid to 85W-140 and used the LS additive and the vibration went away when I would accelerate from a stop while turning. I only used 85W-140 because I wanted something a little thicker, but I wouldn't say it was neccesary.