2026 GMC Sierra 1500 AT4

Vehicle Description

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

Off-road capability meets premium refinement in this 2026 GMC Sierra 1500 AT4 Crew Cab 4WD. Powered by the 6.2L EcoTec3 V8 with Dynamic Fuel Management and paired to a 10-Speed Automatic, the AT4 rides on a factory 2-inch lift with monotube shocks, all-terrain tires, and skid plates — genuine trail hardware wrapped in leather-lined comfort. Finished in Onyx Black, this is the elevated half-ton for drivers across South Dakota and North Dakota who refuse to choose between rugged and luxurious.

Loaded with the AT4 Premium and Preferred Packages, this Sierra brings a power sunroof, multicolor Head-Up Display, rear camera mirror, and GMC's signature MultiPro Tailgate. The 2-speed AutoTrac transfer case, off-road suspension, and integrated trailer brake controller make it as ready for the job site or the backcountry as it is for the highway.

2026 GMC Sierra 1500 AT4 Crew Cab 4WD — Stock #6W110

• Drivetrain: Four-Wheel Drive (4WD) with 2-Speed AutoTrac Transfer Case


• Engine: 6.2L EcoTec3 V8 with Dynamic Fuel Management and Active Exhaust


• Transmission: 10-Speed Automatic


• Fuel Economy: Up to 15 city / 19 highway MPG


• Exterior Color: Onyx Black


• Interior: Jet Black with Kalahari accents, perforated leather-appointed front bucket seats


• Packages: AT4 Premium Package, AT4 Preferred Package, and Technology Package


• Off-Road Performance: Off-road suspension with 2-inch lift and monotube shocks, skid plates, hill descent control, all-terrain tires, and auto-locking rear differential


• Interior Comfort: Heated and ventilated front seats, heated rear seats, heated steering wheel, power tilt-and-telescoping column, and driver seat and mirror memory


• Technology: GMC Premium Infotainment with 13.4-inch touchscreen and Google Built-In, wireless Apple CarPlay and Android Auto, 12.3-inch digital driver display, Bose premium audio, and multicolor 15-inch Head-Up Display


• Towing & Trailering: Trailering Package, integrated trailer brake controller, hitch guidance with hitch view, and 120V bed power outlet


• Exterior Highlights: GMC MultiPro Tailgate, spray-on bedliner, LED cargo lighting, LED fog lamps, power-folding heated mirrors, off-road high-clearance steps, and red recovery hooks

Expert Insights

According to Kelley Blue Book and Edmunds, the GMC Sierra 1500 AT4 stands out for blending serious off-road hardware with a genuinely upscale interior and the versatile MultiPro Tailgate. Reviewers consistently praise the strong 6.2L V8 and the AT4's ability to handle rough terrain without sacrificing everyday comfort.

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!