GMC's Sierra 1500 was already pretty beefy, but the new Sierra AT4 variant is even burlier.

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The suspension has been lifted by 2 inches and is damped by off-road-tuned Rancho monotube shocks.

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Externally, the AT4 distinguishes itself with body-color bumpers and grille surrounds. 

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4WD is standard and features a two-speed transfer case and a locking rear differential.

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The MultiPro recursive tailgate is also standard.

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The 2019 GMC Sierra AT4 goes on sale in the fall, and pricing will be announced closer to that time.

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Red tow hooks and other trim bits add a splash of color to break up the monotonous black scheme.

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GM's 5.3-liter V8 is standard, but a 6.2-liter V8 and a new 3.0-liter diesel I6 are available upgrades.

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Check out our coverage of the GMC Sierra AT4 at the New York Auto Show for more details.

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Or just keep clicking for more shots of the GMC Sierra AT4.

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