"I purchased this truck to tow our 36ft 5th wheel with three slides, washer/dryer, three friges, three flat screen TVs, and more stuff then you can believe your wife can pack in it. This is got to be my 10th truck I've owned along with travel trailers, and Motor Homes. We work out of town and use our travel trailers and motor homes as second homes. This is the first truck I've owned that can tow a trailer this size like its not there and at amazing speeds. The only problem I've had thus far is the fuel gage sending unit, and the warranty cover that. The crew cab has lots of room and we have the 8ft bed, lots more room."
"Well built, comfortable truck with strong towing capability. I tow a 42' fifth wheel and this truck handles it with ease. Impressive power and fuel mileage averaging 16-17 mpg highway when not towing. Excellent for a 4WD crew cab dually. Lots of useful options such as bluetooth. Best truck that I have owned by far. Have had Ford super duties and before that Chevy's."
"We have 4 of these duramax, allison trans trucks.We have had no problem with any of these trucks. 3 of the 4 trucks never have returned to the shop for anything except routine maintenance. The power is amazing. The diesel engine really shines for farm work where there is a lot of idling. The fuel milage is easily double that of the gas engine under these conditions.
I will be hard to talk out of buying a duramax for my next truck."
"Excellent truck, great for towing. The Allison transmission alone sets this truck above Ford and Dodge. Very comfortable, pretty good mileage considering (I avg 15.6 mpg when not towing), too bad they raised the price of diesel way above gasolline."
"Great truck, use to pull a 38' fifth wheel coach that weighs 15,000lbs. Averaging 13 mpg while pulling at 60 mph and average 18 to 20 mph without coach on highway travel. Very comfortable and powerful. I recommend in a heart beat."