GMC has long made a fuss about its Denali sub-brand, which is meant to signify the most luxurious trim available for any given GMC model. GMCs, of course, are supposed to be more upscale versions of Chevrolet trucks and SUVs, even without Denali badging.

Enter a new sub-brand – AT4. First available as an off-road-oriented trim on the Sierra full-size pickup, and intended to become available on all GMC models within the next two years, AT4 is a trim that aims to emphasize off-road ability – or at least look the part.

While the Sierra’s AT4 trim offers mechanical changes that serve to improve the truck’s off-road prowess, the Acadia version is more about off-road looks, all-terrain tires and standard all-wheel drive notwithstanding. GMC knows the Acadia is a suburban shuttle, not a bad-ass off-roader, and has adjusted the AT4 treatment for this vehicle as such.

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