The GMC Sierra AT4 is a rugged, stylish, and capable full-size pickup, but we think it would look even better with a proper ...

GMC's marketing ... colors like red or black. The AT4 brings some capability as well. It has Rancho shock absorbers, additional skid plates and an Eaton automatic locking rear differential ...

Additionally, 2022 GMC Sierra SLT, AT4, AT4X, and Denali trim levels all feature Rear wheelhouse liners as standard, except for AT4 and Denali trims with the CarbonPro Edition package. Finally ...

Premium trucks mean premium profits. That’s especially true when it comes to the heavy-duty segment, where the most plush and potent diesel dually 4WD models can almost touch the six-figure ...

GMC has dabbled with off-road models in the past, but the introduction of the AT4 proves that they are committed to the dirty lifestyle. All 2019 Sierra AT4s feature a 2-inch suspension lift, are ...

We’ve known for a while now that GMC and Chevy have been working on AT4 and Trail Boss versions of their respective Sierra EV and Silverado ... The Silverado has natural black plastic fender ...

Grille (Body-color surround with high gloss Black mesh and Black chrome inserts. With (PCP) AT4 CarbonPro Edition ... for driver and passenger, rear B-pillar mounted GMC Connected Access capable ...

Recently we had the chance to try out one of the most exciting offerings in the GMC lineup, the 2021 GMC Sierra 2500HD ... on what's in the rear bed. GMC claims that this AT4 package is redefining ...