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GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept interior
Make GMC
Model Sierra All Terrain HD
Concept year 2010
Production year -
Engine 6.6 litre V8 Duramax diesel

The GMC Sierra All Terrain HD concept is a heavy-duty, off-road pickup which was created by GMC's design team as a way of showing off the potential of the new-for-2011 Sierra HD.

With a modified, production-based 4WD chassis and the Duramax diesel/Allison 1000 six-speed powertrain, the GMC Sierra All Terrain HD features enhanced suspension, a higher ground clearance and a wider track. The GMC Sierra All Terrain HD also displays improved approach/departure angles (thanks to a shorter overall length) and superior off-road capability - while all the time maintaining the same cargo and trailer pulling characteristics of the 2011 Sierra HD.

Lisa Hutchinson, GMC product marketing director said of the Sierra All Terrain HD concept: "It delivers the exceptional capabilities of the Sierra HD – hauling, towing and performance – and applies them to the toughest driving environments. It's the ultimate professional-grade tool for construction crews, ranchers and adventurers whose activities aren't limited by where the pavement ends." She continues. "Although it is strictly a concept, it is a pretty realistic one."


Design
The designers took care to make sure that the styling of the GMC Sierra All Terrain HD wasn't filled with superfluous plastic bits that would hinder the vehicle's off-road potential. Instead they focused on making the front and rear bumpers more streamlined and neat - helping improve the approach and departure angles even further. The bumpers also house frame-mounted recovery hooks - just in case - and integrated skid plates to protect the vehicle's underside. A large, airflow-optimized grille maximizes cooling in tough conditions, while a forced-induction hood feeds more air to the Duramax diesel engine.

Carl Zipfel, the design manager for the GMC Sierra All Terrain HD concept said of the vehicle's styling: "The design of the All Terrain HD is an expression of its capabilities – strong, functional and absolutely professional grade. We're excited about the design elements and exploring how they could apply to future GMCs."

The GMC Sierra All Terrain HD Concept features large fender flares which help cover the 35-inch-tall BFGoodrich tires. At the rear, the cargo box features lockable, lighted storage compartments, along with two special compartments inside the cargo box which provide access to a 110-volt power outlet and air compressor. A tough bed liner, with a unique pattern designed to mimic the appearance of circuit boards, provides a protective cover for the bed.

The GMC Sierra All Terrain HD Concept also features motorized steps for the cab and cargo bed making it easier to enter and exit the vehicle, while maximizing ground clearance during off-road driving.


Interior
The interior of the GMC Sierra All Terrain HD concept is designed to complement the exterior design. That means premium appointments and increased functionality, including enhanced lighting. Two-tone dark gray leather seats, matched with embossed carbon fiber-style leather on the seating surfaces, have red contrast stitching. Additional leather-wrapped interior features include the steering wheel, instrument panel and center console. Trim elements are finished in either stainless steel mesh or satin chrome.

A new navigation radio is also featured on the Sierra All Terrain HD concept and previews future radios to be offered in GMC vehicles. An integrated 80-gig hard drive contains map data for the navigation system. It eliminates the need for a map disc and provides greater storage of music from portable devices. It also features DVR-style "time lapse playback," which allows up to 20 minutes of recording/playback from the AM/FM/XM radio stations.


Chassis
Based on the chassis of the 2011 Sierra HD trucks, the All Terrain HD concept features a fully boxed steel frame. It incorporates the production models' new independent front suspension and asymmetrical rear leaf-spring suspensions, but with a wider 73-inch (1,853 mm) track (front and rear) that enhances stability during off-road and highway driving.

Specialized Fox off-road shocks were created specially for the All Terrain HD, with specific valving. The shocks feature visible, remote fluid reservoirs – connected to the shock bodies via custom hoses.

The Sierra All Terrain HD concept also features electronic disconnection of the front stabilizer bar, which enables greater crawling capability on rocky terrain. The driver simply pushes a button inside the cab to disconnect it from the front suspension.

A full composite underbody protection system shields the Sierra All Terrain HD's transmission, drivetrain, fuel tank, exhaust system and axle differentials. It starts with the front bumper, which rolls beneath the truck and leads to a composite, integral belly pan that covers a front suspension skid plate.


Drivetrain
The Sierra All Terrain HD concept is powered by a production 6.6L Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission powertrain combination offered in the 2011 Sierra HD trucks. The engine develops 397 horsepower and 765 lb.-ft. of torque (1,037 Nm).

The 6.6L Duramax is more fuel-efficient - with up to 11-percent greater fuel economy than previous versions - and reduces NOx emissions by up to 63 percent. The powertrain's efficiency is further helped by the transmission, which requires less engine power to funnel torque to the axles.

The Sierra All Terrain HD also features four-wheel drive, with automatic locking front and rear differentials.




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GMC Terradyne
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