after installing my leveling kit. I started getting a really iritating vibration at 65 to 70mpr. It seems to get more violent when the suspention is working.

 

I got the Death wobble after installing mine. Consider yourself lucky.

 

If it's a late model 2002, then it's most likely your front driveshaft.

They don't seem to like the angle the lift provides.

I didn't get my vibe till I lifted 4.5 inches though,
I had the leveling kit for a couple weeks, and didn't have the vibe.

It could be as simple as a ujoint thats nearing the end of it's usefull life, and the added angle is killing it quicker.

Could be the driveshaft needs to be rebalanced.

Or, the driveshaft could have been installed "out of phase" and the lift just aggravated it.
Remove it, flip everything 180 degrees and reinstall to see if that is it or not.

Or, it could be un solvable without a new high angle driveshaft.

Or it could be something completlely different, but you have somewhere to start.
Easy way to figure out if it is ineed the front DS is remove it and drive around for a while.
Just mark how it is hooked up so you can get it put back the same.


phox

 

it is the later model,the dealer has rebuilt the front pinion,rotated and balanced the tiers.and still on fix i guess ill take it back and have them remove the front shaft. If indeed it is the angle of the shaft I wonder if longer control arms might fix me up.

 

I had that exact issue on my 02 4x4 5-sp.

It's the angle of the front drive shaft at the pumpkin. I haven't heard of any other truck with an Auto or the 6-sp having this issue because the drive shaft is longer hence less of an angle at the differential. I just took mine off and lived with stock hieght.

Good luck.

-CM