Im stumped. Goin down the road if I hit a bump my truck starts this aful vibration and it is impossible to drive. It feels like the whole truck is just vibrating terrible. The only thing that thus far stops it is to switch to 4high. then it goes away till i hit another bump. I have had both front and rear up on jack stands. nothing is broken u joints are good cvs are good everything spins and feels good.
I have recently had 4.88 s installed and i have a detroit in the rear and lockright up front.
Im thinkin this has something to do with my transfercase. Anyone have any ideas?
thanks
irv