Hey guys I've done a search but I'm still at a loss on this problem. I've got an '04 1500 4x4 w/ the 5.7 and roughly 98k on the clock. I bought the truck about 18 months ago and all was good. About 8 months ago I began experiencing a vibration at high speed, I thought it was due to a used set of 35's I bought. I tried wheel balancing and tire rotations with no luck then I really got frustrated. I saved some money and replaced all 4 shocks, no help. I then replaced all 4 wheels, no help. Now I replaced all 4 tires, NO HELP. I don't experience the vibration at low speed only between 70 & 80 (maybe faster but haven't tried). I've read that these 3rd gens are prone to these vibrations for one reason or another but I'm hoping you guys can point me in another direction to fix this.
Thanks!

 

Would start with getting the tires road force balanced and an alignment.

 

I had never heard of road force balancing before, I'll be calling the Discount Tire I purchased the tires at as soon as they open!
Thanks

 

yeah on oversized tires if you are not getting them road force balanced, you are wasting your money.

But if you've replaced tires, wheels, etc., then I'm thinking you got a ball joint or tie rod end going. The trucks with vibration issues are mainly the coil over trucks, very rare that a torsion bar (02-05) experiences it, except when a front end wear component is worn...

 

A little information on it for ya....http://www.basstire.com/roadforce/

 

mine had same problem- vibration over 50-55 mph. just was bad u-joint...

 

I guess my next step is to replace upper/lower ball joints and tie rod end. Whether or not parts are worn at 98k its probably time to replace em. I'm still waiting on Discount Tire to open up to see if they balanced the tires right, to be honest I wasn't paying attention.

 

AND another thing to check...thanks Martin

 

I'd lean toward the u-joints, I replaced mine under warranty at a similar mile marker.

The dealer did the rear drive line, used OEM joints, then the fronts did the same thing.

I went through all of them last summer. Found out the dealer damaged one of the joints by compressing the a cap into a needle bearing, then just clipped it in--not good, so I did them all. Installed Precision joints which are greasable---done!

 

I just called Discount, they told me they can't road force balance the BFG MT KM2's because of the lug size; does this sound reasonable or are they just messing with me? Doe anyone have a link to a good u-joint replacement write-up?
Thanks!