I know a lot of guys love them but I would never buy another 6.0 gm truck. I had a 2010 gmc 2500 6.0 gas to pull or new 8000 p pound camper. Towed it from Southern Illinois to Northern Wisconsin and back. Worst trip ever.
Got 6.8 to 7.3 mph on almost totally flat ground, constantly shifted between 3rd, 4th, and 5 th gear for the slightest Hills, and road like a Buckboard. My wife wanted me to trade it while in Wisconsin before the trip back home. ?.
I actually had to go to the chiropractor when we got home, and I've never had back trouble in my life. We got home on Sunday and I traded it for a new ram on Tuesday. Best move I ever made.