2015 Chevy 2500 HD Crew Cab 4 x 4 My experience; Here is my experience with towing my 33ft Travel Trailer (9500 lbs) with this truck. It tows easily at whatever speed you set the cruise at, what I never thought thru was where the torque band is on this truck. It will select whatever gear is needed to pull the load, this sometimes results in driving in third gear up hills at 4200 rpm. It rarely would shift up into 6th gear and would not stay there long even on the slightest uphill. This all resulted in an average MPG of 6.9 on my 1300 mile trip to Florida. Encountering a strong headwind coming home it would still pull no problem at 66 mph but it got 5.8 mpg into the wind. Around town it gets 11.6 MPG driving very easy. disappointed by MPG. What was your MPG towing your trailer?