While the GMC Sierra All Terrain is equipped to handle rough terrain, it retains a respectable 2,700 lbs payload and 15,600 lbs maximum tow capability. There is no mistaking that this truck takes aim at the market that Ford's SVT Raptor currently dominates; with no competition. If put into production, however, the GMC Sierra All Terrain would likely merge portions of the "All Terrain/Off Road" market with the heavy duty diesel market. The payload and towing capabilities surpass the Raptor, making it a viable choice to consumers who need a truck for work and play. And while the heavy diesel may not allow the truck to be quite as nimble as Ford's Raptor, the engine does offer generous amounts of torque. Ford's Raptor has enjoyed success in a market in which one can argue there is currently no competition.
Unfortunately, we won't be expecting the Sierra All Terrain HD concept to become a production model in the foreseeable future. This follows the fact that for the 2015 model year, GMC introduced an All Terrain package for 2500HD and 3500HD models. However, these models resemble an upgraded trim package and lack both the features and capabilities that the All Terrain HD concept boasted.

GMC Sierra All Terrain Concept
GMC Sierra All Terrain Concept Specs
Drivetrain: |
4 wheel drive, rear wheel drive |
Engine: |
6.6L Duramax |
Transmission: |
Allison 1000 6 speed automatic |
Axle Ratios: |
3.73 : 1 |
Dimensions: |
• Wheelbase: 148.6 inches |
Payload/Towing: |
2,700 lb payload, 15,600 lb max tow |
Suspension: |
Fox Racing Shox, leaf springs |
Wheels/Tires: |
9.5"x20" billet aluminum wheels, 325/60R20 BF Goodrich Mud Terrain tires |
Horsepower: |
397 hp @ 3,000 rpm |
Torque: |
765 lb-ft @ 1,600 rpm |