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Vehicle Profile: 2012 GMC Sierra HD
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Vehicle Profile: 2012 GMC Sierra HD
Head of the pickup class

In the truck world, few things matter as much as capability and versatility. With multiple upgrades, new comfort equipment and extra safety features, the new 2012 GMC Sierra Heavy Duty trucks are some of the most capable machines on the market. Also sporting new exterior enhancements, the new Sierra HD trucks have the good looks to match their impressive ability. With prices starting less than $30,000, the Sierra HD provides performance at an affordable price.
To ensure choices as versatile and diverse as its owners, the 2012 Sierra HD truck is available in 2500HD (MSRP starting at $29,100), 2500HD Denali, 3500HD and 3500HD Denali models. With three body styles––Regular Cab, Extended Cab and Crew Cab––and long or short boxes, as well as the choice of 2WD or 4WD plus single- and dual-rear-wheel configurations, there are 24 different Sierra HD configurations to build. That number grows when you consider that each truck is available with your choice of a standard Vortec 6.0-liter gasoline V8 or a Duramax 6.6-liter turbodiesel V8 engine.
The Vortec engine comes matched with the Hydra-Matic 6L90 six-speed automatic transmission. The 6.0-liter engine, which features Active Fuel Management for better efficiency, is good for 360 hp, 380 lb/ft of torque and 22 mpg highway. This combination provides great efficiency and performance, and has been designed with an emphasis on low-rpm ability. For buyers looking for a bit more power, the high-pressure direct-injected, B20 Biodiesel-compatible 6.6-liter Duramax engine is the answer. While horsepower is increased by 37 ponies, bringing the total to 397 hp, the true power of the Duramax lies in its impressive 765 lb/ft of torque. Accompanying the Duramax is an Allison 1000 six-speed automatic with driver shift control, tap up/tap down shifting and a tow-haul mode that reduces shift cycling and allows for more control when moving heavy loads.
To increase the ability of the Sierra HD, a variety of enhancements have been made for 2012. Larger rear springs and U-bolts, revised rear axle tubes and shock tuning, as well as revised pickup box cross sills and other structural enhancements, combine to push the Sierra HD to the top of the class. These combined upgrades give the Sierra HD best-in-class maximum fifth-wheel trailering capacity of 23,000 pounds, maximum payload of 7,215 pounds and gross combined weight rating (GCWR) of 30,500 pounds. Thanks to a modified box mounting on the frame and a revised trailer hitch, the Sierra HD also delivers best-in-class conventional-hitch trailering capacity, with a rating of 18,000 pounds.
To make easier use of this capability, the Sierra HD has several convenience features aimed at improving the ease of towing. Hill Start Assist takes the stress out of starting off on a grade, while Trailer Sway Control and a standard 36-gallon fuel tank (that provides up to 680 miles between fill-ups in Duramax models) help you can spend more time on the road. A Smart Exhaust Brake and Automatic Grade Braking help to ensure your load never gets away from you, and the Integrated Trailer Brake Control, coupled with Intelligent Brake Assist and larger brakes, makes sure coming to halt is accomplished quickly and safely.
The exterior of the Sierra HD trucks conveys the trucks’ impressive abilities. To differentiate the HD from other trucks, a louvered power-dome-style hood sits atop a wide, chrome accented grille, and a full-width chrome steel front bumper hints at the power lurking beneath. The Sierra HD offers 18- and 20-inch wheel/tire combinations to accentuate single-rear-wheel models. Dually models use 17-inch wheels. All models come with front recovery hooks and dual cargo lamps. Exterior colors include Onyx Black, Midnight Blue Metallic, Mocha Steel Metallic, Stealth Grey Metallic, Steel Grey Metallic, Summit White, Fire Red, Carbon Black Metallic, and the new for 2012 Quicksilver Metallic. Buyers looking for an even more distinctive exterior should look to the luxurious HD Denali with its unique chrome grille and body color bumpers.
While the Sierra HD is powerful enough to tear down a city, the interior has been designed to keep you comfortable. The Sierra HD offers Work Truck (WT), SLE and SLT trims, in addition to the Denali models, to match your needs. From accommodating and thoughtfully equipped to formally dressed and amenity-filled, the Sierra HD line offers it all. CD/DVD/MP3 audio, Bose speakers, premium leather upholstery, navigation, a rear-seat entertainment system – they’re all standard or available depending on model and trim selected. HD Denali models add standard heating and cooling to the leather front thrones, and add heat and auxiliary controls to the leather-wrapped steering wheel.
With unsurpassed abilities and extraordinary levels of comfort, the 2012 GMC Sierra HD is the perfect truck for your every need. Come in today and see this impressive machine for yourself.


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