Duramax Diesel with Allison Transmission, the built proof combination. I want to own one of these so bad. Not sure what it is about this body style, I really like the look of the hood. Put a 6in lift and some bulldog performance upgrades this thing could pull a house off its foundation.

my 2500hd has the biggest motor to ever come from the factory in a stock light duty truck. it sports the vortec 8100 which is a 496ci big block. and it has the allison 1000 seires transmission which everyone knows is bullet proof, and it will pull WHATEVER you put behind it

We've has this truck for almost 7 years. She's been a great ride. Always plenty of room, love to fold down the back seats to pile in the stuff for camping. A few problems with the glo-plugs, but they have always been replaced under warranty. Don't put a high tool box in it though, makes it tough to see out the back window. Low profile would be much better.

We bought this truck in Spring and have had lots of fun with it. Hauls trailer like butter. Really comfortable ride. Can't believe it's a truck...feels like a cadillac inside (but with more VROOM!) Wish gas was free! Love to take it camping. Need to add a running board step for shortie me though. Otherwise whole family just loves it.

This truck has the big 8.1L motor with an Allison 5-speed transmission. It will pull just about anything but don't get too far from the gas pump. Pretty basic but built like a truck, fairly sharp turning radius for as long as it is. I have put about 21,000 lbs. of seed on it and the truck does not miss a beat. The Allison in Tow mode really helps with braking.