2026 GMC Sierra 1500 AT4

Vehicle Description

2026 GMC Sierra 1500 AT4 Crew Cab 4WD for Sale in Mobridge, SD

Factory off-road capability with a premium edge — that's this 2026 GMC Sierra 1500 AT4 Crew Cab 4WD. It pairs the available 6.2L EcoTec3 V8 with a 10-speed automatic, rides on a 2-inch factory lift with monotube shocks and all-terrain tires, and wears Summit White over a Jet Black with Kalahari interior. For gravel roads, pasture trails, and winter highways across South Dakota and North Dakota, this is the Sierra built for it.

This one is equipped well beyond the standard AT4. The AT4 Premium Package and AT4 Preferred Package add the 13.4-inch diagonal color touchscreen with Google built-in, Bose premium sound, a multicolor 15-inch head-up display, and rear sliding power window. The Black Badging Package with black GMC emblems and Sierra nameplates plus dealer-installed active exhaust give it a look and sound all its own.

2026 GMC Sierra 1500 AT4 Crew Cab 4WD — Stock #6W100

• Drivetrain: Four-Wheel Drive (4WD), Crew Cab Short Box


• Engine: 6.2L EcoTec3 V8


• Transmission: 10-Speed Automatic


• Exterior Color: Summit White


• Interior: Jet Black with Kalahari Perforated Leather, 10-way power front bucket seats


• Packages: AT4 Premium Package, AT4 Preferred Package, and Black Badging Package


• Off-Road Performance: 2-inch factory lift with monotube shocks, all-terrain tires, hill descent control, front recovery hooks, and StabiliTrak with trailer sway control


• Towing & Trailering: Trailering Package, integrated trailer brake controller, and 3.23 rear axle


• Interior Comfort: Heated and ventilated front seats, heated rear outboard seats, heated wrapped steering wheel, dual-zone climate control, driver seat and mirror memory, and premium floor liners


• Technology: 13.4-inch diagonal color touchscreen with Google built-in, wireless Apple CarPlay® and Android Auto™, Bose premium sound system, multicolor 15-inch head-up display, and 8 years of OnStar Basics


• Safety: GMC Pro Safety with automatic emergency braking, forward collision alert, front pedestrian braking, lane keep assist with lane departure warning, IntelliBeam auto high beams, and Safety Alert Seat


• Convenience: GMC MultiPro Tailgate, 120V bed power outlet, LED fog lamps, rear sliding power window, and Universal Home Remote


• Dealer-Installed Extras: Active exhaust, molded black splash guards, and engine block heater


• Fuel Economy: EPA-estimated 15 city / 19 highway MPG

Expert Insights

According to Kelley Blue Book and Edmunds, the Sierra 1500 AT4 stands out for combining real off-road hardware with a refined, tech-forward cabin. The 6.2L V8 remains a reviewer favorite for its effortless power and towing confidence — exactly what this truck delivers.

Visit Beadle Chevrolet–GMC in Mobridge, SD

Come see this 2026 GMC Sierra 1500 AT4 Crew Cab 4WD at Beadle Chevrolet–GMC in Mobridge, South Dakota. We serve customers from Aberdeen, SD, Bismarck, ND, and Pierre, SD — all within two hours. Call us at 605-845-7277 or visit beadleautogroup.com to schedule your test drive!