Just bought this truck from my neighbor. 58,000 miles on a 8 year old truck. It is box stock and clean. I cleaned it up even more. I have never owned a diesel before or a GMC. This diesel is Awesome! GMC has a slightly better finish than the Silverado I sold. We tow a 33ft Keystone Ultra lite camper that's 6,800lbs like a dream. There all expensive and I don't know why the comman man would spend the money on a new one. Enjoy shopping and go clean used. Some mods in the future, good deals out there on used perf. parts
Duramax/Allison is just Awesome! Can't imagine needing anything bigger. The Allison Trans is great going up or down hills. This is a dream ride with our camper behind it. My wife loves the ride. Heated leather seats, Bose stereo. First class in a 2005 SLT 2500 HD Duramax. Clean older trucks never die, they just get more attention.
Duramax/Allison is fine box stock.
This is what I will be considering: mild tuner, high flow air filter in stock box, LBZ turbo inlet tube, 4 inch exhaust, sulastic shackles to smooth bumps. (No hurry on any of this)
This truck is a true performer with just a few minor (cheap) add ons that won't hurt the truck.
Ok let's start out that I have owned them all and I have owned a lot of trucks. My business is repairing trucks of all sizes and brands for large and small owners. I drive what I don't have to fix! Period! The GMC gives me power to pull my toy hauler and comfort on the long vacations. looks great and never lets me down
the 6.6TD and allison. great fuel economy and power. the seating is good on long trips (I have a very unforgiving back) and I have little problem. visibility of the hood design over the ford and Dodge is exceptional, better than Chevy too.
I would like onstar to be coordinated with my own cell phone via bluetooth so I did not have to install another car bluetooth kit. Also may sound wimpy but if it was a little lower to the ground that would be nice too.
I purchased this truck in April 2010. My first gmc. I love it. It has the duramax & Allison combo. Very powerful. It pulls beyond what I expected. I got this truck used with 81 thousand miles. Everyone tells me its just getting broke in. So far I like everything about this truck.
Love the truck. Drove the Ford and the GMC and fell in love. Drives sweet. Tow a 10,000 lbs 5th wheel and don't even know it is there. Transmission is great uphill and down. Bose stereo is great. Heated leather seats and dual climate control are sweet. Would recomend this truck to anyone.
It's a love/hate relationship between me and this truck. I first fell in love with the outside design. The front view has the same appearance as the Denali. It rides high and has a very aggressive look. It has plenty of power and has yet to be challenged by any load have had. The 6.0L is one of my prized possessions. Most of the of the negative comments here should have been expected, I understand. It sucks gas. I'm averaging around 14 MPG. It offers a bumpy ride. The dash board seems cheaply made, with thin plastic. The rear end can get loose quickly on wet surfaces. The power steering box went out twice. 17 inch rims on a truck of this size is an injustice.