Heavy-duty hauling and towing require a heavy-duty pickup, and the 2017 GMC Sierra HD is plenty capable of performing both, while also giving those inside a refined experience. A revamped Duramax diesel with 910 lb-ft of torque gives the Sierra HD serious bragging rights, and the new off-road All Terrain X model joins the lineup. More stylish than the Ford F-250 and slightly more upscale than its Chevy Silverado sibling, the Sierra Denali HD is for the person who may own the work site, but occasionally needs to get his or her hands dirty. Available in 2500 and 3500 models, the 2017 Sierra HD offers a 360-horsepower gasoline or 445-horsepower diesel V8, plus a wide range of cab, bed and interior configurations.
For 2017, the Sierra HD gains an improved Duramax 6.6-liter diesel engine delivering more horsepower and torque, thanks in part to a new air-induction system. A new All Terrain X trim is added, as are features like Teen Driver that allow parents to keep track of their teenager’s driving habits.
Both the interior and exterior have been redesigned to match that of the Sierra light-duty full-size truck launched last year. The CornerStep bumper and LED taillights in the bed also join the fray.
For 2014, the gasoline-powered GMC Sierra gets a new standard 4.10 rear axle. The previous 3.73 axle remains optional. Also new are an available spray-in bedliner and the expansion of the bi-fuel gas/CNG 6.0-liter V8 to the 2500 model line.
For 2013, extended-cab 2500 HD models equipped with the standard 6.0-liter V8 can be had with a new bi-fuel system that accommodates both gasoline and compressed natural gas (CNG). Two new exterior colors (Sonoma Red Metallic and Heritage Blue Metallic) round out the changes.
The 2012 GMC Sierra HD sees a few improvements for this model year. A new hard-drive navigation radio is offered, while Work Truck models gain cruise control and lockable spare tire. Denali trims gain as standard equipment heated and cooling front seats, a heated steering wheel, a rearview camera and, on 3500 dually models, 17-inch polished wheels.
The 2011 GMC Sierra HD's Duramax turbo diesel's power, torque, maximum conventional and fifth-wheel tow and payload ratings are best in class. Its fifth-wheel tow capability is 21,700 pounds, it can tow up to a 17,000-pound conventional load with its factory-installed hitch, and the Duramax is fully B20 biodiesel compatible.
For 2010, a USB port is added to up level radios, while the newest version of OnStar features long range remote start and traffic probe.
Technical upgrades include the addition of Bluetooth hands-free communication technology to OnStar 8.0, as well as Destination Downloads for vehicles equipped with DVD navigation. Extended and Crew Cab trims offers a rear backup camera, while a stability enhancement system is made standard on the 2500 HD with single rear wheels.
XM Satellite Radio is made standard on all models, while dual-rear-wheel versions receive new 17-inch wheels. A power driver's seat is now available on Regular Cab models.
Essentially, all major components and the exterior are new for 2007. Most notable - from an exterior standpoint - is the distinct sheet metal used by GMC when compared to that of its sister division, Chevrolet. There are also a greater number of interior choices, pickup beds with more load versatility and performance enhancements in both the gasoline and diesel engines.