2015 GMC Sierra 3500 takes on the new Ike Gauntlet HD Extreme Towing Test
( ) The 2015 GMC Sierra Denali 3500 is the new Heavy Duty diesel truck from GM that s about to take on the Ram and Ford HD trucks on America s Highways. With the trusted GM Duramax diesel, this new truck is built to tow. In a brand new Ike Gauntlet HD extreme towing test, we see just how well it handles America s highest and steepest highway towing over 15, 000 pounds. The Ike Gauntlet HD is a timed run up one of America s steepest highways from 9, 000 feet above sea level to t
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