Winter driving is a popular subject, especially for truck enthusiasts. Truck manufacturers like to talk about capability and toughness whenever they can. But it's one thing to successfully manage a ...

GM Authority Executive Editor with a passion for business strategy and fast cars. Get our GM news straight to your inbox. We'll send you one or two emails a day with the latest GM news coverage. It's ...

Two Sierras, two very different missions! We break down the AT4 and AT4X in terms of suspension, off-road capability, pricing, and more.

Shop 2020 GMC Sierra 1500 AT4 vehicles in Lancaster, TX for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 7 2020 Sierra 1500 models in Lancaster, TX.

When you want to go off-road, uptown-style, GMC supports that vision with a rugged line of trucks and SUVs packaged under the AT4 label, or All-Terrain 4WD. These mighty vehicles are off-road capable, ...

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