GMC Sierra 1500 AT4

Pauline Obrien
March 28, 2018

Unveiled at the NY auto show, the 2019 GMC Sierra AT4 is the debut model for the new sub-brand which Vice President of Global GMC Duncan Aldred says, "will be seen on every vehicle in our lineup in the next two years". Adding off-road capability to Sierra's utility the new model marks the debut of the AT4 brand, which will appear on every GMC model in the next two years.

In fact, Automotive News reports that every model in GMC's lineup will get an AT4 version within the next two years.

2019 GMC Sierra AT4

Buyers can choose from 5.3- and 6.2-liter V8 engines or the new Duramax 3.0-liter turbodiesel inline-six. Special badges and trim inside and out further set it apart from more road-focused models.

Additionally, the Sierra AT4 will be available with the GMC-exclusive CarbonPro bed that trades standard steel inner panels and floor in favor of a carbon fiber composite that is created to offer dent, scratch and corrosion resistance. The front and rear bumpers, along with the grille surround, are body-color, but the grille itself is black chrome.

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Another intriguing item that comes standard on the GMC Sierra AT4 is the new MultiPro tailgate. That black chrome also adorns the LED foglamp bezels, while the window trim, mirror caps and skid plate are done in black gloss.

The height of cool, however, promises to be CarbonPro, the first-ever lined carbon-fiber bed box. A locking rear differential equally distributes power to both rear wheels. Interior is specific to the AT4 and falls between SLT and Denali grades-meaning it's upscale and very well appointed, with trim elements that add to the pickup's youthful attitude. The steering wheel, center stack, and sill plates get dark-tinted and textured aluminum finish; the seats are black with Kalahari color accents and contrast stitching.

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The 5.3L and 6.2L engines feature stop/start technology and new Dynamic Fuel Management that enables the engine to operate on one to eight cylinders, depending on demand, to optimize power and efficiency. The MultiPro Tailgate features six unique functions and positions, offering enhanced second-tier loading and load-stop solutions, a standing workstation mode and easier access to items in the box.

This cargo bed, called the CarbonPro, uses carbon-fiber composite in the floor and inner panels, to help trim approximately 60 lbs. of weight compared to a traditional, all-steel bed construction. Eighteen-inch wheels with all-terrain tires are standard.

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GMC's Traction Select System has a variety of off-roading and terrain modes, and there's a new ProGrade Trailering System with a companion smartphone app. Surround vision offers a 360-degree view of the truck for low-speed maneuvers.

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