Electric 2020 GMC Sierra 2500HD AT4 on Track at Speed In-cab video clip of Magna's 2020 GMC Sierra 2500 BEV being driven at speed on the 1.5-mile road course at M1 Concourse.

"The GMC Sierra AT4 redefines this week’s Ride of the Week. Rated Red is your go-to channel for everything Heartland! From epic food and cars to military life, video games, and outdoor adventures, we’ ...

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The 2019 GMC Sierra AT4 blends off-road hardware into a modern, thoroughly updated pickup truck that doesn't skimp on power, luxury, or safety equipment. From its higher suspension setup to its ...

The 2019 GMC Sierra AT4 proves that GM's upmarket truck and SUV brand is getting serious about offering rough-and-tumble capability to rival the Ford F-150, Toyota Tundra, Ram 1500 and Nissan Titan.

Auto123 gets behind the wheel of an AT4 Diesel version of the GMC Sierra 1500, with the goal of ascertaining its relevance amid the multiple available variants of the truck. Here’s our review.

Standard equipment includes the features that come with this vehicle. Select Your Options Choose options to include in this vehicle value. For the most accurate pricing and values on new or used ...