Rear End Clunk


I have a 1991 Chevy K1500 Automatic 4x4

There is a clunk in the rear end, it only happens when I take off from a stop, or sometimes when I slow down a bit and give it more gas. It doesn't do it at all when i'm just driving, it happens when I slow down, then start off again.

It think it's something in my differential, on the cover plate there is a long gash mark from the ring gear (8.5" diameter) and a bunch of small nicks on the side; I'm not to sure what it is, i've heard the it could be the yoke bearing.

There is only gear lube leaking from where the yoke goes into the differential, I know that I need a new seal there. But there is no lube coming out from the differential cover plate. There also isn't any large gashes or scraches or nicks on the gears in the differential, except on the edge of the part where the pinion shaft goes trough, but I think it's been there because there wasn't any metal pieces in the differential.

Any help is greatly appreatiated, Thank You

Do you
have the same problem?
Tuesday, August 14th, 2007 AT 10:44 AM

1 Reply


Sounds like you may have a bad universal joint. This is a common cause from bad joints. Check the drive shaft and inspect the joints for wear and the shaft for play.

Let me no what you find


Was this
Thursday, August 16th, 2007 AT 8:25 AM

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