Looks like maybe the front isn't the problem. with the trailer on this weekend it was nowhere near as bad so it's looking like the issue might be in the rear and it's just transferring through the drive line to feel like the front.. hmmm

 

[QUOTE=DirtyDozen;580971]I'm sure none of these are the right one... but a couple more ideas anyways...

The front diff/driveline will spin even in 2wd. with the hubs unlocked, just thru the drag and friction and what not through the grease in the hubs, so make sure both of the u-joints out at the steering knuckles are still free and easy moving

I've never owned a 1st gen, but I've also never seen a truck with lockouts where the front driveline spins in 2wd. Thats the whole purpose of the lockout

 

i have had tires mess with me trying to fig out what was wrong. belts broke can do funny things.

 

I'm not sure if your truck is a dulley but there is a special way to put the wheels on so they center on the hub and don't shake you. I'm also not sure if you have done this. Good luck with finding the problem.

 

yeah, the duals are on right.. had a tire shop put em on wrong before and wow was that a bouncy ride!

 

That's correct. Normally the lockout hubs should completely release the front driveline, so that's probably not the issue. That is also why some people install the freespin hubs from Dynatrac and a couple others on the later trucks, in the hopes they will gain some mpg from removing any possible drag from the driveline caused by the unit bearing hubs. But it doesn't really make any difference.

 

could pinion angle be off a bit? usually vibrations are only noticeable when starting from a dead stop though. not sure if yours has been lifted but i believe the rule is something like for every inch of lift above stock, a 1/4" drop of the carrier is necessary to maintain the proper angle of the driveline.

 

Do you feel the wobble in the steering wheel, or the seat of your pants. If its the wheel then focus on the front end, if the seat of your pants focus on the rear.

 

its in the wheel(up and down not a side to side wobble).. and in the seat.. haha I didn't manage to get alignment done yet, but the radiator emptied out on the way home and the rear half of my serpentine belt is chewed all up, never ending.. truck is about to end up as parts if I can manage to afford a new one.

 

Probably needs a new tensioner. I take them off and try to work a little gear lube into the action/spring on those when I do a belt. They wear on the sliding surface of the action, become slightly misaligned causing the belt chewing problem.