when turning at slower speeds my trucks shakes pretty hard (feels like its in the rear), anyone have a clue? i am taking it in tomorrow was just looking for some help

 

maybe its the limited slip axle?

 

There have been several threads describing the same problem. Have the dealer check the alignment

 

I had this same shaking/vibration problem with my FX4. I noticed it real bad after getting back from a road trip. It turned out to be in the differential. They replaced the limited slip. It fixed the problem, but then I noticed a howling noise at 50-55MPH. They had to go back in and replace the ring & pinion and re-shim to proper depth. They also added a friction modifier to the fluid. It works good now and no howling.