While we read many problems or issues from time to time, I just want to send a high note! My 06 4x4 3500 DRW Laramie QC auto is just a great truck. I just returned with my 15,000lb fifth wheel from a 1600 mile trip. It just ran great plain and simple at 48,000 miles. Totally stock except for a K&N, I got 11 mpg at 70mph on Interstate 95 from PA to South Carolina. It has never been flashed, I guess there were no flashes? That's it, just happy with my 2nd Cummins!