I have an 05 automatic 4.0 with 136,000 miles. In the just few weeks the transmission has started to slip randomly. Its only done it while driving at heart 45mph. The motor suddenly revs, but it's ok within a few seconds. My code reader gives me a transmission control module code of 82 and says "Teeth Count Error". Of course my luck nothing turning up pertaining to that code on Google. The Jeep had 95,000 miles when I bought it and I'm not sure of preventative maintanence before that. About 1,000 miles ago I had the transmission serviced with a flush and new fluid. It didn't start to slip right away, but also never did it before this.