Towed with the new diesel today.

I have had my new duramax for about two weeks ago. Had to take it to the dealer three times, but if finally seems good to go. So I hooked it up to the boat today, and towed it from Modesto to Don Pedro.

I had it in tow haul mode....it seemed to want to hold high rpm's for no reason on flat ground. On the hills on highway 132...it either slowed down on the hill like a gas motor would, or if I put my foot to the floor, it would accelerate up hill, but you could almost watch the gas gauge move.

With the boat hooked up, it rode terrible. Every little bump caused the truck to buck really bad.

On the way home, it seemed to do better out of tow mode. I figure this thing is suppose to have 650ilbs of tq..(no way it has this), so for a 5000 lb boat/trailer combo, it shouldnt struggle. So i pulled back into Modesto, and filled it up. I got 8.8 MPG....my wifes 2003 Suburban with the 5.3 makes the same trip and gets 13 mpg...pretty sad. I have one trip to shasta planned this summer, and one to powell. As of right now, we will be using our old suburban. Im almost ready to right this thing off as a loss. I was told my several people I would not even feel the boat behind me...def not true.