"This is my 3rd dually, first one a 2005 Dodge with the 5.9L. Great engine, poor drivetrain. 2nd a 2008 Chevy 6.6L.This truck would pull a coal train but got poor mileage. Traded it for a 2011 Chevy 2500 with the 6.0L Loved the lower payments but the constant downshifting drove me crazy when towing. Just bought the new 2012 Chevy LTZ with the 6.6L After breaking it in hooked a 30' trailer with 17 round bales weighing about a thousand pounds a piece to it. Hay and trailer weight around 23,000 pounds. The Duramax pulled this load 150 miles at 65 MPH. The exhaust brake helped alot slowing the load down. This truck could have pulled another 10,000 pounds with no problem. The 2012 in my opinion is the best produced in resent years. I love this truck!"
"I pull heavy loads with this truck weekly (dump trailer and 25' gooseneck flat bed). The truck has been extremely reliable and is comfortable to drive. Great off road and on road. Great truck for contractors."
Cons: "Built in trailer brake controller inadequate"
Likely to recommend this car? (1-10): 10
"I traded in a 2006 3500 HD w/ diesel for this one because of the added towing capacity and exhaust brake feature. I use this truck for towing a triple axle deck-over flatbed with lumber. Total weight runs 20-22k #.
Since I'm pushing the max towing limit with this truck it definitely labors but holds it own. I also plow snow in the winter with it. It does that effortlessly. The miles I have on it are low but hard ones.
The engine is quiet and super clean running. The usual rattle that comes from the Fords and the Dodges simply isn't there with this engine but the diesel purr is there if you listen closely.
The interior is the same as a well equipped Suburban. Same platform. Same seats, etc.
One major gaffe is that they give you a built in brake controller but it doesn't support electric over hydrualic brakes. Hey Chevy...when you are towing over 20k#, what kind of brakes do you think those trailers have?? DUH!!"
"I have owned several Chevy 3500 Crew Cabs over the years. The trucks have been very reliable and pull my trailers very well. This is the first of them that is a diesel and I like it very much. It performs as well as our gas engines did without being loud and obnoxious and, with the Allison Tranny, it rocks pulling trailers through the mountains. I gave it four stars for comfort only because they changed the seats in this model and they are not as comfortable for me as the older styled seats. I am a smaller person and they resized everything for a larger person, it seems. I gave it four stars for quality only because they added more plastic parts. The truck otherwise deserves 5 stars. My '01 had steel bumpers, now you get some sort of plastic that looks beefy. You will not be disappointed with this truck."
"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."