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2020 GMC Sierra HD revealed with new camera tech, off-road AT4 model

The 'Heavy Duty' variant of GMC's professional-grade work truck debuts with a tough new look and loads of towing-friendly tech.

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Antuan Goodwin
2020 GMC Sierra HD
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The 2020 GMC Sierra HD debuted today at a small event in San Diego, California.  

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The Heavy Duty version of the Sierra/Silverado platform features a beefed-up look and, more importantly, heavy duty performance.  

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The Sierra HD debuts a 10-speed automatic transmission that is mated to the brand's 6.6-liter Duramax turbo diesel engine.  

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Some of the most interesting technology that premieres with this generation Sierra is the camera-based tech, including a 'transparent trailer view' that makes a towed payload appear invisible by stitching together camera views.

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GMC claims that the Sierra HD Crew Cab boasts best-in-class ratings for front headroom and legroom.  

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This year, the Sierra HD lineup will also include an AT4 package that brings off-road capability to the 2500 and 3500 trim levels.  

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The AT4 features an off-road suspension, Rancho Shocks, skid plates and an Eaton locking rear differential.   

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The rubber meets the road at 18-inch wheels wrapped in Michelin all-terrain tires.  

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The AT4 should match the HD's towing capability with specific off-road programming for the pickup's Traction Select System.   

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Though not the first to feature a Rear Camera Mirror, the 2020 GMC Sierra HD will be the first to bring the technology to this segment.

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2020 GMC Sierra 3500 HD Denali

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2020 GMC Sierra 3500 HD Denali

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2020 GMC Sierra 3500 HD Denali Dual Rear Wheel

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2020 GMC Sierra 3500 HD Denali Dual Rear Wheel

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2020 GMC Sierra 2500 HD Denali

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2020 GMC Sierra 2500 HD Denali

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2020 GMC Sierra HD AT4 Interior

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2020 GMC Sierra HD Denali Interior

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2020 GMC Sierra HD Denali Interior

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2020 GMC Sierra HD Bowl View Camera

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2020 GMC Sierra HD Rear Surround Camera View

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2020 GMC Sierra HD Rear Trailer Camera View

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2020 GMC Sierra HD Rear Top Down Camera View

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2020 GMC Sierra HD Picture In Picture Side View Camera

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2020 GMC Sierra HD Inside Trailer View Camera

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2020 GMC Sierra HD Hitch View Camera

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2020 GMC Sierra HD Front Top Down View Camera

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2020 GMC Sierra HD Front Side View Camera

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2020 GMC Sierra HD Front View Camera

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2020 GMC Sierra HD Bed View Camera

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2020 GMC Sierra HD Rear View Camera

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2020 GMC Sierra HD Transparent Trailer Rear Camera View

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2020 GMC Sierra HD Rear Side Camera

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