• Mar 10, 2010
2011 GMC Sierra Denali HD – Click above for high-res image gallery

For the first time in its history – and considering that the company has been around for over 100 years, that's significant – GMC decided to make an official appearance at the National Truck Equipment Association show in St. Louis. And the Professional Grade brand brought along the heavies... specifically, the 2011 GMC Sierra Denali HD.

When the truck hits the market later this year, it will be the first time that GMC has offered a Denali version of its Heavy Duty truck platform. After giving the truck a thorough once (and even twice) over, we have to say that the Denali, even with all of its drilled-out chrome highlights, looks rather subdued and classy in all-black paint. And, though we certainly appreciate the in-your-face attitude of General Motors' two main competitors in the pickup wars, we'd say that understated appearance is a good thing.

Inside, you'll find the expected luxury trimmings, including heated and cooled leather seats and a matching wood-trimmed heated steering wheel, along with some nice details like Denali-specific door sill plates. All that is well and good, but the big news resides under the truck's big black hood: a revised 6.6-liter Duramax V8 diesel engine, which is mated up to a stout Allison 1000 six-speed automatic transmission.

For those who like to keep track of these thing, which is to say every single person who's actually interested in purchasing one of these earth-moving behemoths, GM's latest Duramax beats out the 2011 Ford Super Duty in the all-important horsepower and torque wars with 397 horsepower and 765 pound-feet. Wanna pull a ten-ton load? No problem. That powerplant is also more fuel efficient (by 11 percent) and cleaner than the unit it replaces.

Interestingly, GM representatives tell us that they had a bit of a back-and-forth with the Feds regarding how best to handle the required refilling of the diesel exhaust fluid tank, which won't run dry for about 5,000 miles between fill-ups. It seems that when the truck gets dangerously low on the exhaust treatment, its speed will be capped at 55 miles per hour. If you run out, the computer nannies will keep you to just a four mph crawl so that you'll never be stranded completely. Want more? Check out our gallery of high-res images below and click here for the rest of the details.





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    • 1 Second Ago
  • 32 Comments
      • 4 Years Ago
      IMO, If you want a truck, buy a Ford. As for these blinged-out luxo-trucks, I'd stay away from GMC. Not a terrible truck but GMC has no clue about how to deal with up-scale customers who buy these types of vehicles.
      Jonathan
      • 3 Years Ago
      It's a CTS-V LSA
        Jonathan
        • 3 Years Ago
        @Jonathan
        Cadilac is providing the drivetrains for all of De Tomaso's .So the perfect choice would be the CTS-V's motor . Ford had no interest in providing drivetrains early on and flat out refused so the went with Cadilac instead .
      • 4 Years Ago
      Wow! I can go more than 4 MPH with my foot on the brake when the car is idling. 55 MPH should be the limit when you are completely out.
      • 4 Years Ago
      Yeah, but it sure as hell doesn't limit you to FOUR MILES AN HOUR when you run out. Incredible. Government or GM? Article doesn't really say but suggests government. I can't imagine the government being THAT controlling...*sarcasm*
      • 4 Years Ago
      Hey dimwits
      the new SD Ford uses Urea Injection to.
      • 4 Years Ago
      Picking this over the Super Duty based on looks is like picking a John Deere bulldozer over a Caterpillar because it's "prettier". These trucks are all about doing real work - looks should only matter if you're a chick. Don't know how many women buy these.
        • 4 Years Ago
        @ katshot :

        Any statistics on that claim? Because the majority of heavy-duty pickups I see are hauling or towing and often scuffed-up or dirty from being used as they're intended.

        If you're talking about half-ton trucks then I'd probably agree.
        • 4 Years Ago
        The fact is the vast majority of these trucks are NOT actually used for an "real work". Just like the vast majority of high-priced sports cars never see a track, and few 4x4's ever go off-road. People just like to be associated with vehicles that imply power or high degrees of capability. Just like how so many wannbe bikers buy Harley's.
      • 4 Years Ago
      Professional Grade indeed.
      • 4 Years Ago
      "A closer look at the numbers does reveal some give-and-take, however. The Ford's maximum tow rating is 21,600 pounds, while GM's is 20,000 pounds. And while not exactly engine related, the Ford truck also has a higher max payload than the GM twins."

      http://www.autoblog.com/2010/03/10/gm-quickly-one-ups-ford-with-2011-duramax-diesel-ratings-releas/
      • 4 Years Ago
      I like it, but man, that wood shouldn't be so enthusiastic in its fakery...
      • 4 Years Ago
      autobots roll out!
      • 4 Years Ago
      I will rather take a Ford. All that plastic chrome does not do it for ME.

      7hp/30tq more than the Ford is not persuading me at all.

      Nice try GM. I'll give you credit.

        • 4 Years Ago
        I don't know what you mean by that. The Ford does not have as much plastic chrome as the Sierra.

        There's you're straight face.

        I'll take the Ford. Thanks!
        • 4 Years Ago
        "I don't know what you mean by that. The Ford does not have as much plastic chrome as the Sierra."

        Are you serious?

        http://www.autoblog.com/gallery/2011-ford-f-series-super-duty-first-drive/
        • 4 Years Ago
        yeah because ford's plastic chrome is SO much more tasteful hahaha

        couldnt even say that with a straight face
      • 4 Years Ago
      Why is it eating chicken wire?
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