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Frankly, we're surprised that this is only a concept, as the idea is very simple: take the heavy-duty GMC Sierra, glitz up the outside, luxe up the interior, and slap the Denali surcharge badge on the doors. Powered by the 6.6L Duramax capable of yanking Madison Square Garden off its foundation, the Sierra HD Denali would be the perfect tool for the well-heeled in need of hauling ability. After all, a hedge fund manager buying a Cigarette 38 Top Gun GT with his bonus money is gonna need a proper tow vehicle to bring it to the marina, right?

Follow the jump for full details on the concept.

[Source: GM]

GMC Sierra HD Denali

GMC's Denali brand represents the most premium and powerful models of the Sierra, Yukon, Yukon XL and Envoy lineups, but the Denali badge has never been applied to a heavy-duty truck – until now. Designers and engineers developed the Sierra HD Denali concept todemonstrates how the Denali ethic translates to GMC's most capable trucks. They started with a Sierra 2500HD crew cab and infused it with all of the features and accoutrements expected of a Denali, including unique exterior styling and an enhanced interior. The Sierra HD Denali is powered by the powerful 6.6L Duramax diesel V-8 engine and rides on custom 20-inch wheels.

Vehicle highlights:

* Sierra HD Denali crew cab concept
* 6.6L Duramax diesel with six-speed Allison automatic transmission
* Polished exhaust tip
* Custom Star Mist Black exterior color
* Denali-specific grille, front and rear body-color bumpers, and chrome door handles
* Denali badging
* Body-color tailgate protector
* Custom, bed-mounted tool box with power side rail system
* Custom interior in black, graphite and metallic, with mini-perforated leather-trimmed seating
* Heated/cooled front seats
* Customer-finished interior trim plates
* Leather-wrapped upper door panels and instrument panel top pad
* Denali HD-logo sill plates
* Pewter suede like-headliner

GM Accessories features (production and concept):

* Chrome oval assist steps
* Cargo management accessories
* Rear under-seat storage
* Rear wheelhouse liners
* Bi-directional remote start
* Headrest DVD system
* Hitch receiver cover
* Chrome stake pocket tie-downs

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