Completely agree shade tree.

 

Your Federal tires may have broken belts in them.
I would replace the tires.

the other trick to diagnose vibration is to the the front drive shaft off and run the truck in CDL and see how this changes the vibration.

 

Do the transmission fluid/filter service and go from there,

Jfall, he has an 02, no cdl.

 

Yea.. regrettably no cdl. Not even the nipple. I'm still up in the air about tires. When I pop the trans in neutral the vibration goes away. That's about as far as I can get.

 

so a little update, the vibration is getting worse, i now have a resonance throughout the inside of the truck. very annoying. i think i may just drop some coin on a really good driveshaft as i cannot think of any other part of the truck to blame. opinions on a good one? im currently looking at the on BPutah sells. i just dont understand lucky8.com. and i refuse to pay what british atlantic wants for one.. as much as i like them.

 

Yup I will be doing the same thing. However it looks like my front drive shaft has never been rebuilt.(seeing some rust on the trunnion caps) I have the parts on order and will be rebuilding it this weekend.

 

The front shaft I have is newer. It's the 2nd one. Took the shaft out and shook the baby.. The ujoint and cardan are loose as hell.

 

Another dumb question.. I am still just poking.. could I have a bad from CV axle? The vibration does get worse the more throttle you give it..