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412015 Sierra All Terrain HD looks ready to hit heavy-duty trails

GMC is getting its heavy-duty trucks ready for the mud this summer with its All Terrain package for the Sierra 2500HD and 3500HD. Meant to blend style, tech and ruggedness, the pack includes a lot of extra chrome outside and an off-road package underneath.

30Detroit 2011: GMC Sierra All Terrain Concept is steroid-riddled awesome

GMC Sierra All Terrain Concept – Click above for high-res image gallery

3Autoblog Podcast #209: 2011 Chrysler 300, GMC All Terrain HD, Automobile All Stars, 2013 BMW supercar

Click above for the Autoblog Podcast in iTunes, RSS or listen now!

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