Description Meet the Gray 2021 GMC Sierra 1500 AT4!a pickup that looks ready for work on Friday and adventure on Saturday. Under the hood, a stout 5.3L V8 teams up with a smooth 10-speed automatic, delivering confident power while smart cylinder management helps balance muscle with efficiency when conditions allow. With 4WD, a two-speed transfer case, an auto-locking rear differential, and an off-road suspension featuring a factory 2 lift and monotube shocks, this truck is prepared for rutted trails, snowy driveways, and steep descents alike.When its time to hook up and head out, trailering is where this Sierra really shows off. An integrated trailer brake controller, Hitch Guidance (with Hitch View), and an in-vehicle trailering app help take the guesswork out of lining up, checking connections, and staying on top of trailer details. The MultiPro tailgate adds extra versatility for loading, reaching, and hauling, while bed lighting, tie-downs, and a bed-mounted power outlet make your cargo area feel like a mobile workspace.Inside, the Black leather cabin is equal parts tough and comfortable, with heated steering wheel, dual-zone climate control, and handy storage throughout. And yestheres a CARFAX report available for extra peace of mind.