I started noticing a knocking, vibrating sound as I accelerated. I took it to several places, and they couldnt figure it out. Then, last Saturday, I was driving on the interstate, and completely lost power. I was stranded with no shoulder to go to. I tried to put it in park, and it almost rolled away. I took it to a Jeep dealer, and they told me it was the ptu, which they cant do anything with because there is no fix. I am stranded with no vehicle. I offered to pay out of pocket for the repair, but there is no repair.