THis truck has been a great vehicle. I have the Duramax Diesel / Allison tran, 4x4, CC, LT package. I added a powerchip programmer to it and I get around 18.5mpg, not pulling a trailer, around 13mpg pulling a loaded 18', but the power remains the same either way. You can not go wrong if you need a truck for driving around town or pulling a trailer around.
I'm not sure which truck I picked from the list but I have the 4WD, Duramax with an Alison transmission. The truck has great power starting off and is quicker then my 2002 F250 Power Stroke. This truck is much quieter and more comfortable. So fat I have driven +20000 miles and have had no problems. I love my truck!
I am a First time Chevy owner, ex ford guy. I am thinking I made a mistake with this purchased truck on Mon. evening and it was in the shop Tues. night with a bad tranny. Never had a problem with my Fords.
I've had my truck for 2 months now, and it is great. My only regret is that I didn't look harder for one with a manual transmission. Not that the auto is bad, but I only get about 13 mpg and a top speed of about 96 mph. I looked at every Chevy and GMC dealer in the north half of Dallas, though, so it's not likely that I would have found one. My only complaint is the 26 gallon fuel tank - They have the same tank for the 4.3L V6 as the 6.0L V8.