When I am going between 50 and 60 mph my truck has a vibration that comes and goes. It feels alot like a u-joint or wheel bearing, but all u-joints have been replaced and I checked wheel bearings when I replaced pinion bearings a week ago. I have a friend that has suggested that it may be the clutches in the limited slip. Has anyone got any info on limited slip or have any new ideas?

 

I'd also like to know this. I think some of mine is in the steering box.

 

Well here was my case.Vibration same speed about,front drive shaft u-joint replaced and balanced shaft,rear shaft u-joint replaced.Front control arms replaced.Vibration gone 0-to 120 mph.Pinion angle is very important in these trucks.