2026 GMC SIERRA 1500 AT4X

Vehicle Description

2026 GMC Sierra 1500 AT4X for Sale in Mobridge, SD

The AT4X is the most capable Sierra in the lineup — and this 2026 GMC Sierra 1500 AT4X in Onyx Black with an Obsidian Rush interior makes no apologies for what it is. The 6.2L EcoTec3 V8 with Dynamic Fuel Management delivers the torque that South Dakota's toughest terrain demands, while the AT4X-exclusive Multimatic DSSV Dampers and Electronic Rear Locker take off-road performance to a level the standard AT4 simply cannot reach. Skid plates, all-terrain tires, and a lifted factory suspension round out hardware that's as capable as it looks — and it looks exceptional.

Inside, Perforated Leather Front Bucket Seats, Dual Zone Climate Control, and heated front and rear seating provide premium comfort regardless of conditions outside. The GMC Premium Infotainment system with 13.4" Color Touchscreen, Wireless Apple CarPlay and Android Auto, and adaptive cruise control connect and protect. The Trailering Package and Trailer Brake Controller ensure you're ready to work — or to haul — the moment you leave the lot.

2026 GMC Sierra 1500 AT4X — Stock #6W26

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


• Engine: 6.2L EcoTec3 V8 with Dynamic Fuel Management


• Transmission: 10-Speed Automatic


• Exterior Color: Onyx Black


• Interior: Obsidian Rush Perforated Leather Front Bucket Seats, Heated and Ventilated Front Seats, Heated Rear Seats


• Off-Road Capability: AT4X-Exclusive Multimatic DSSV Dampers, Skid Plates, All-Terrain Tires, Hill Descent Control, Electronic Rear-Axle Lock


• Technology: GMC Premium Infotainment with 13.4" Diag Color Touchscreen, Wireless Apple CarPlay and Android Auto, Adaptive Cruise Control, SiriusXM Radio Capable, 8 Years OnStar Basics


• Interior Comfort: Dual Zone Climate Control, Heated Steering Wheel, Power Steering Column, Premium Floor Liners


• Towing & Trailering: Trailering Package and Trailer Brake Controller


• Exterior Highlights: Active Exhaust, GMC MultiPro Tailgate, Power Folding and Heated Mirrors, LED Fog Lamps, Rain Sensing Wipers, Front Recovery Hooks


• Safety: Automatic Emergency Braking, Forward Collision Alert, Front Pedestrian Braking, Lane Keep Assist, IntelliBeam Auto High Beam

Expert Insights

According to Kelley Blue Book and Edmunds, the Sierra 1500 AT4X earns recognition as one of the most capable factory off-road trucks in the full-size segment — the Multimatic DSSV dampers alone set it apart from competitors. For buyers who need a truck that's genuinely ready for anything, the AT4X delivers.

Visit Beadle Chevrolet–GMC in Mobridge, SD

Come see this 2026 GMC Sierra 1500 AT4X 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!