only when driving n reversing it shakes alot n nothing happens in neautral
why does it shakes alot on 2007 Ford Expedition
Sounds like it could be the front differential. I would suspect it is the 4x4 tranfer case connecting to the rear drive shaft. Need to check u-joints on the rear drive shaft as well to make sure the shaft itself is not the problem.
I agree with #1
agre with #1 also