Rear end shaking apart?

[NVPRIUS]

Hey Guys, New weird problem. Its a 2001 3500 auto trans 5.9l 85,000 miles.
The issue is when I make a very hard turn, both right or left, the rear end (or something in the back) seems to be extremely loose and starts to bounce and make an extremely loud banging noise that goes away after I slow down and straighten out. It really feels like the entire truck is going to rattle apart until I get it straight again. Any ideas would be greatly appreciated.
Thanks Neal

 

[DavidC]

Tire seperating, out of balance, loose lugnuts. Those are the easy things to check.

 

[FOXY005]

Don't know what kind of rear ends were in to 01's but if it's a posi with clutches they could be grabbing and need some shark oil lubricant.
Had a very similar problem with a 89 Suburban.

 

[NIsaacs]

https://mopar1973man.com/topic/17792-rear-end-issue/?do=findComment&comment=231404

 

[JKellis]

Don't know what kind of rear ends were in to 01's but if it's a posi with clutches they could be grabbing and need some shark oil lubricant.
Had a very similar problem with a 89 Suburban.

I second the posi clutches grabbing. Fresh gear lube with posi additive can't hurt anything.

 

[NVPRIUS]

Got the lube today and will change tomorrow- Stay tuned,
Thanks guys

 

[BigPapa]

Post a pic of the carrier after you get the cover off and we can tell you what you’ve got.

 

[NVPRIUS]

Drained the old fluid and removed the rear differential cover and was surprised at a few things. The old fluid was surprisingly clean and relatively clear. It also didn't have the horrible smell I usually get from gear oils.The lower inside area of the case had no debris or metal shavings and the magnetic fill plug was clean as well, no shavings. Closed it up using a new gasket and refilled it with 75-140w synthetic with friction modifier. Took it out on the road and it seemed worse than ever..............



Turned it right around and climbed under in the Nevada 113º in the shade and found

The darn thing is just bouncing around in the hanger with so much play I'm surprised it just didn't pop through the bed!

So thanks for pointing in the right direction fo plan B which is now to replace the center bearing and wonder if this is something I can do or do I need special tools to do it.

I'm getting so close and if I get this fixed the truck will be perfect (or for a while) again.

Thanks Neal

 

[NIsaacs]

If your bearing is good, it probably is with only 80k miles you might just get this: Age may have been the culprit.

Click on driveshaft support rubber.

https://www.napaonline.com/en/search?text=drive+shaft+rubber+center&referer=semantic&se=1#

 

[Joe Mc]

Man if that works out that's a really cheap fix. Yes you can do this with no special tools. Before you take "anything" off get a paint pen and mark rear yoke to universal shaft to shaft slip joint (although I think it can only go in one way, but better safe...). Never just replaced the rubber bushing before but I'm guessing the carrier will need to come out to permit easier removal and install of new, so take that paint pen and mark all around where carrier meets chassis and a few straight lines across carrier to chassis so when you reinstall you have best chance of getting it exactly where it was. Have fun. If I'd guess I'd say this looks like a 3-4 beer job, depends on how often you stop for a sip

 

[NVPRIUS]

The bearing was OK but I figured I might as well do it right and replace the whole thing. Ground the bearing and split it with a chisel (not that hard) and slid it off. Had a nice piece of pipe that was exactly the size of the bearing and hammered the new one on. Marked all the pieces before I took off the shafts and replaced them in the same orientation that they came off.

Thanks again for all the help- the truck is perfect again! Neal

 

[JKellis]

The bearing was OK but I figured I might as well do it right and replace the whole thing. Ground the bearing and split it with a chisel (not that hard) and slid it off. Had a nice piece of pipe that was exactly the size of the bearing and hammered the new one on. Marked all the pieces before I took off the shafts and replaced them in the same orientation that they came off.

Thanks again for all the help- the truck is perfect again! Neal
View attachment 122975

Fantastic, thanks for the pics!