"General Motors has somehow fell far below the competition in fuel milage with the 6.6 D. Pulling a 30 foot trailer my fuel milage falls down to between 8 and 9 MPG. Thats terrible compared to Ford and even Dodge. The truch looks and rides good for a 3500 but is way over priced. No with the fuel prices I am sure I have made a bad investment..."
"This is a great riding truck, however, the 6.6L diesel has problems with frequently allowing exhaust fumes to come into the cab of the truck. Very horrible smell! Do it again, i'd save the $8K and NOT buy the diesel. I get 7-8MPG pulling a trailer, 12-14 empty on the highway...not that great for a diesel....especially considering the price of gas vs diesel fuel."
Pros: "drives and rides comparable to my Avalanche LTZ"
Cons: "Give me 50 acres, and i'll turn this rig around."
Likely to recommend this car? (1-10): 10
"I have had bigger trucks with bigger motors while 5th wheeling over the country, but now have settled down on the ranch, and this truck is truly a work truck for me. It is the best riding big truck i have had. the turning radius is a challenge at times, but thats to be expected. whether feeding in the pasture, or hauling horses this truck is dependable, and capable. I equipped it with a large flatbed, and the truck is super versatile."
"great truck, pulls super great, very smooth with no down shifting, hooked it up with dodges and fords and drug them all around drilling location, would like a little bettter interior, very happy with fuel system, filters last a long time, 50 below zero fires rite up, in snow country hardly ever use 4 wheel drive, low end torque is amazing, comes with really good tires on it, drives straight and smooth not like the lumber wagon dodges, had a new dodge took it back in 3 wks, fuel ecomomy and ride quality"
"To many trips to the shop, I think I got a lemon. Love the looks and performance, great interior (LTZ) motor and tranny are unstoppable but everything else stinks. It was my dream truck turned to a nightmare ... front end rebuilt, brakes done, switches falling out, trailer brake control took 8 visits to fix, now the electronics are failing, fender liner falling out, sunroof shade falls out all the time, door jam seals replaced, the list goes on and on. Thank God I bought the extended coverage plan because I dont thinks anything but the motor and tranny will make it to 100K and Im already at 58."
"particulate filter is a pain when driving going into regen approx. each tank of fuel, when hauling cuts power and Allison trans front pump seal leak was a pain had to have it repaired 3 times at dealership. All in all good truck for the money 2008 duramax 3500"
"excellent vehicle, hauls heavy loads in horrible weather like a champ. is always the first one there, with the most reliability. my one complaint is fuel mileage, but what are u really gonna do when ur hauling that much weight..."
"Purchased this truck Dec 09, on the way home
I started regretting buying it.
It has the 6.0 engine and 6 speed auto. I am familiar with the 6.0 engine most of the time great power. This one is the exception. Constantly shifts up and down (mostly down) sounds like a Corvette, runs like Chevette. Took it out two times, got 8.5 mpg empty (no load). Took it out with a trailer still 8.5 MPG. Took the head board off got it to 11.3 MPG (no load ) with the cruise set at 68 on the interstate, it shifts down at the sight of an incline, it shifts to 4th.on 3% grade and 3rd on a 7% grade. I see why it has two gas tanks, it need 4 of them.
This is a work truck, 12' flat dump weighs 8000 lbs empty. Maybe I expect too much.
It has the 6 speed auto, 6th gear is useless, the only time it gets into 6th is down hill.
It has the 3.73 rear end. 323 hp and 373 lb.-ft of torque. I purchased this truck to replace an aging 94 Dodge diesel with a 175 hp. that weighs 8300 lbs empty. There is no
comparison, put the old Dodge in 5th gear and go. No back shifting required (empty) and no, my Dodge is not upfitted with performance enhancers. Tried to return it
under GM famous 60 return policy, no way.
It really sad you cannot buy a truck with a
manual transmission. I really think its the
whole problem with this one. I parked this one and re tagged the old Dodge."
"At 10,000mi I started to get a wheel hop from the rear wheels when I made sharp turns. The dealership changed the gear oil, and told me that should take care of it. It didnt! Then I personally changed it to discover metal fragments in the oil and all over the magnet. I took it to another dealership and showed them what I found and they promptly took care of it. No biggie really. I understand every vehicle cant come off the line perfect. Other than that this truck has been as close to perfect as I believe they can make it. Fuel mileage (diesel) is not the greatest, but for the power in most cases is probably a fair trade. I was born and raised a Ford guy, but things have changed now. Really a good truck."
"I hate that I have to let her go, This truck has everything including a engine brake. We used here to pull a live stock trailer and she never let us down " She can pull anything no joke " My wife drove it more than me she loves the comfort, and the feeling of being safe while driving the truck. Like I said I hate letting her go."