On20Z

iTrader: (3)

Some of you guys know i posted about my dam bed shaking.So i replaced axles,pinion shims,uJoints,And it still shakes.Well today my wife took my truck and picked up some wheels/tires for my brother inlaw.She said that the thing didnt budge with weight on it and road beutiful.Is there something i could check in the leaf spring area that could be causing it to shake.I did by the truck used so im wondering if previous owner towed with it.I also adjusted my rear brakes last week and while it was on jack stands i started it and put it in drive and watched the whole bed shake but did notice the overload springs bouncing if that can help any of you point me in the right direction.

built408

iTrader: (10)

I really don't understand your problem, so the truck has a vibration while driving and you can see the bed shake? How much is it lowered? Need alot more info.

006rcsb

sounds like something is binding in the rear end, but you just went through it when you swapped the axles.

On20Z

iTrader: (3)

Its lowered 5/8.rear is a flip kit with stock block and shackle to give me the 8".When i put the axles in the vibration went away for about a week and now its worse.Pinion is shimmed with a 6* shim,u Joints are good.

Yeah i have no clue what is causing it to do this.

Neverdone

Have you checked to see if the tires/wheels are balanced correctly? Tire separation? Flat spot in the tread? Since they have been replaced, are the u-bolts tight?

On20Z

iTrader: (3)

Trev,this is my 3rd set of wheels this year and same problem,U bolts are tight.Someone mentioned mabey spider gears,someday ill get it figured out.

Neverdone

Well that is a head scratcher for sure. With all the work you have already done, what else could it be but the rear end? Definitely let us know if/when you figure it out!

Good luck.