Description

2026 GMC Sierra 1500 AT4X Crew Cab 4WD for Sale in Mobridge, SD

The 2026 GMC Sierra 1500 AT4X Crew Cab 4WD is GMC's most capable off-road half-ton — and this one is built for the landscape of South Dakota, where the pavement ends and the real terrain begins. Powered by the 6.2L EcoTec3 V8 with 420 horsepower and Active Dual Exhaust, it's matched to a 10-Speed Automatic and backed by full-locking front and rear differentials, giving it traction capability that most trucks simply can't match. If you've been waiting for a truck that truly earns the off-road badge, this is it.

The AT4X AEV® Edition takes everything the AT4X starts with and pushes further — a factory 2-inch lift, Multimatic DSSV® dampers, five hot-stamped Boron steel AEV® skid plates, AEV® front and rear bumpers with heavy-duty recovery points, Goodyear® Wrangler Territory® MT tires, and AEV® rocker guards. Inside, this Sierra wears the Obsidian Rush Full Grain Leather interior and includes 16-way power seats with massage, heated and ventilated front seats, heated rear seats, power sunroof, and a Rear Camera Mirror. The Black Badging Package finishes the exterior with a blacked-out look that matches the Onyx Black paint perfectly.

2026 GMC Sierra 1500 AT4X Crew Cab 4WD — Stock #6W26

• Drivetrain: Four-Wheel Drive (4WD) with 2-Speed Autotrac Transfer Case, driver-selectable full-locking front differential, and driver-selectable full-locking rear differential
• Engine: 6.2L EcoTec3 V8 with 420 horsepower and Active Dual Exhaust with sport-mode capability
• Transmission: 10-Speed Automatic
• Exterior Color: Onyx Black
• Interior: Obsidian Rush with Full Grain Leather Seating
• AT4X AEV® Edition: Factory 2" lift, Multimatic DSSV® dampers, five AEV® hot-stamped Boron steel skid plates (front, IFS, transfer case, fuel tank, rear differential), AEV® stamped-steel front bumper with winch capability, AEV® stamped-steel rear bumper with cast recovery points, AEV® rocker guards, and 18" Goodyear® Wrangler Territory® MT tires
• Interior Comfort: Heated and ventilated front seats, heated rear outboard seats, heated steering wheel, 16-way power driver and passenger seats with massage and memory, dual-zone automatic climate control, power sunroof, and wireless charging
• Technology: 13.4" GMC Premium Infotainment System with Google built-in, wireless Apple CarPlay and Android Auto, SiriusXM with 360L, 15" multicolor Head-Up Display, Rear Camera Mirror, and 12.3" Driver Information Center
• Exterior Highlights: Black Badging Package, 18" high-gloss Black AEV® aluminum wheels with laser etching, GMC MultiPro Tailgate with EZ Lift, spray-on bedliner, C-shaped LED headlamps with fade animation, LED fog lamps, and cargo bed LED lighting
• Towing & Trailering: 8,700 lb towing capacity, Integrated Trailer Brake Controller, Trailering Package, HD Surround Vision with 2 trailer camera provisions, Trailer Side Blind Zone Alert, and Hitch Guidance with Hitch View
• Safety: GMC Pro Safety suite — Forward Collision Alert, Automatic Emergency Braking, Front Pedestrian Braking, Lane Keep Assist with Lane Departure Warning, IntelliBeam, Safety Alert Seat, Rear Cross Traffic Braking, and Front and Rear Park Assist
• Tailgate Audio: MultiPro™ Audio System by Kicker — weatherproof 100-watt Bluetooth® tailgate sound system with illuminated controls, independent of the interior audio
• Fuel Economy: 14 city / 16 highway MPG

Expert Insights

Reviewers at Kelley Blue Book and Edmunds recognize the Sierra 1500 AT4X as one of the most serious off-road half-tons on the market, singling out the Multimatic DSSV dampers and AEV® hardware as genuine differentiators — not just appearance upgrades. The 6.2L V8 adds effortless power delivery whether you're navigating rough terrain or cruising the highway, making this a truck that performs as aggressively as it looks.

Visit Beadle Chevrolet–GMC in Mobridge, SD

Come see this 2026 GMC Sierra 1500 AT4X 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!