( http://www.TFLtruck.com ) The new 2015 Chevy Silverado 2500 with the 6.0L V-8 is designed to tow. But how well will this new Heavy Duty GM pickup tow when the road goes straight up and the air gets thin. We wanted to find out so we maxed out the tow load at over 20,000 pounds and floor the pedal up the TFLtruck Ike Gauntlet. Can a gasoline powered heavy duty pickup compete with a turbocharged diesel engine? Watch another Ike Gauntlet extreme towing test to find out.

The Ike Gauntlet is a timed run up one of America's steepest highways from 9,000 feet above sea level to the top of the mountain at entrance to the Eisenhower Tunnel in Colorado.

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