2003 f350 rear end
 

Good morning all,
i own an f350 crew single rear wheel with an eight foot bed
turning left or right from a dead stop the rear end shudders!
Anybody have a clue as to what the hell this is?
Any suggestions will be greatly appreciated.
Thanks in advance,
ed

I have a 1996 F350 and it does the same thing,,,almost like a rubbing noise?
Someone told me it was the limited slip, that the disc may be worn?
I changed the rear end fluid with Amzoil and the additive. The noise is still there.