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2011 GMC Sierra All Terrain HD Concept


The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck capability combined with greater off-road versatility. It is highlighted by a bold exterior design, enhanced all-terrain suspension and premium details expected of a GMC - all designed to enable greater access to off-road destinations. (continued below)

2011 Sierra All Terrain HD Concept Photo Gallery
2011 GMC Sierra All Terrain HD Concept 2011 GMC Sierra All Terrain HD Concept 2011 GMC Sierra All Terrain HD Concept 2011 GMC Sierra All Terrain HD Concept 2011 GMC Sierra All Terrain HD Concept
2011 GMC Sierra All Terrain HD Concept

GMC Sierra All Terrain HD Concept Takes Heavy-Duty Capability To New Ground

Source: GMC | Published: Tue Jan 04, 2011

(continued from above)

The new 2011 Sierra HD underpins the All Terrain HD concept, with a modified, production-based 4WD chassis and the Duramax diesel/Allison 1000 six-speed powertrain. The enhanced suspension and unique body dimensions, including increased ground clearance and wider track, as well as greater approach/departure angles, deliver off-road capability while maintaining HD levels of payload and trailering capacity.

"The Sierra All Terrain HD concept takes GMC's outstanding new HD platform to the next level, marries it to the legendary Duramax diesel/Allison transmission, and provides a heavy-duty expression of GMC's premium All Terrain package," said Lisa Hutchinson, GMC product marketing director. "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."

The Sierra All Terrain HD features a unique five-foot, eight-inch Crew Cab/short box body configuration that supports a wheels-at-the-corners proportion. Shorter in overall length than production Sierra HD models, the concept's dimensions contribute to greater approach/departure angles.

"The capability-enhancing attributes of the Sierra All Terrain HD build on the already outstanding capabilities offered in the all-new production Sierra HD trucks," said Hutchinson. "Although it is strictly a concept, it is a pretty realistic one."

Purposeful Design

From every angle, the All Terrain HD looks the part of a dedicated off-road performer, with bold, accentuated features complemented by a wide stance and tall profile.

Streamlined bumpers are designed to enhance approach/departure angles and incorporate frame-mounted recovery hooks - with integrated skid plates. A large, airflow-optimized grille maximizes cooling in tough conditions, while a forced-induction hood delivers more air to the Duramax diesel engine.

"The design of the All Terrain HD is an expression of its capabilities - strong, functional and absolutely professional grade," said Carl Zipfel, design manager. "We're excited about the design elements and exploring how they could apply to future GMCs."

GMC Sierra All Terrain HD Concept: Review (2/2)

Specifications
Key: AT - automatic transmission, MT - manual transmission, F/R/AWD - front/rear/all wheel drive
Powertrain
Type V8, Diesel
Displacement 403 cu in (6600 cc)
Power 397 hp @ 3000 RPM
Torque 765 lb-ft @ 1600 RPM
Redline n/a
Driveline All Wheel Drive
Transmission 6 Speed Automatic
Brakes & Tires
Brakes Front - Rear Ventilated Discs - Ventilated Discs
Tire Size Front - Rear 325/60 R20
Exterior Dimensions & Weight
Length 230.9 in
Width 83 in
Height 81.8 in
Curb Weight n/a
Performance
0-60 n/a
1/4 Mile n/a
60-0 Braking n/a
Top Speed n/a
Fuel Economy
EPA Fuel Mileage - City/Highway n/a
Origin & Price
Origin United States of America
Base Retail Price (MSRP) n/a

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