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GMC Sierra All Terrain HD

One of this year’s hottest truck concepts is the GMC Sierra All Terrain HD.  Built on a 2500, crew-cab, short bed chassis, the All Terrain features the Duramax Diesel.  Check...
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GMC Sierra All Terrain HD Concept

Looking to slot in between the Ford Raptor and the Ram Power Wagon, the GMC Sierra All Terrain HD Concept has a strong blend of high-speed off-road running and rock...
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