In my 98 I have a 4.5 lift on 31's. No SYE, the only vibrations I get while driving are from 25 to 30 mph. However, when I come to a stop using the brakes it vibrates. It kind of feels as though it's coming from right under my feet. And it stops when I let off the brake and start moving, it also stops if I put it in neutral. What is this? And what can be done about it?

 

check exhuast .mine was siting on my caved in trans.support causing it to rattle bad.i switched out with a jy one and fixed it.also check motor mounts and trans.mounts.

 

X2, mine did the same thing and my exhaust was hitting my crossmember. The exhaust hanger there was gone on mine too so that's probably the reason.

 

well that must be it. I simply thought that if it was the exhaust it would do it all the time. It must be it because my tail pipe fell off a couple weeks ago right after the muffin, and I just need to take it to a shop to have the muffler work done