The GMC AT4 sub-brand can be found across Big Red's lineup, with the vast majority of models offering an AT4 variant. The ...

The 2019 GMC Sierra is here ... suspension upgrades), the All Terrain package adds Rancho shocks, an Eaton locking rear differential and more aggressive tires. There are some additional features ...

When you want to go off-road, uptown-style, GMC supports ... Outside, the HD AT4 has its own look, rolling on 20-inch high-gloss black aluminum wheels and all-terrain, blackwall tires.

View all 2022 GMC Sierra 1500 specs ... different from the normal AT4, though it sports new 18-inch black wheels with Goodyear Wrangler DuraTrac mud-terrain tires. It sits higher, too, thanks ...

Millenia from now, if the fossil record contains nothing but the GMC Canyon, archeologists ... trim features 18-inch wheels with all-terrain tires, LED head- and taillights, heated side mirrors ...