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WATCH: Behind the Wheel of GMC’s Mattracks-Equipped Sierra 2500HD All Mountain Concept

Posted By GMbeat on Articles

http://www.automobilemag.com - GMC revealed the unique Sierra 2500HD All Mountain Concept last year at the 2017 Los Angeles auto show. The truck features Mattracks tracks instead of wheels for ultimate traction in the snow that are driven by a 6.

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