Ended up trading in my 15 GMC with the 6.0 in for this 06. My buddy that works at a dealer gave me a heads up about it a couple months ago. The guy finally traded it in Sat. I was there a hour later. Didn't even get detailed. It has 34500 miles. Thing is damn near perfect. Old man truck that has been garaged its whole life. Still smells new inside. Got sick of the mileage, power and height of the 15.