Description

2026 GMC Sierra 2500 HD AT4 Crew Cab 4WD for Sale in Mobridge, SD

When the job demands more — more power, more towing, more capability — the 2026 GMC Sierra 2500 HD AT4 Crew Cab 4WD is built to answer. Powered by the legendary 6.6L Duramax Turbo-Diesel V8 with 470 horsepower and matched to a 10-Speed Automatic, this Sierra HD pulls up to 18,500 pounds and arrives factory-equipped for gooseneck and 5th wheel work. For farmers, ranchers, and contractors across central South Dakota and southern North Dakota, this is the truck that earns its keep every single day.

Loaded with the AT4 Preferred Package, Technology Package, Black Badging Package, X31 Off-Road Package, and Gooseneck Hitch Package, this Sierra 2500 HD does serious work without leaving comfort behind. The X31 adds twin-tube Rancho shocks, off-road suspension, skid plates, and Hill Descent Control — real off-road capability stacked on top of heavy-duty work credentials. The factory-installed gooseneck prep and gooseneck ball mean you can hook up and head to the field the same day you drive off the lot.

2026 GMC Sierra 2500 HD AT4 Crew Cab 4WD — Stock #6W25

• Drivetrain: Four-Wheel Drive (4WD) with Autotrac® 2-Speed Transfer Case and Eaton® Automatic Locking Rear Differential
• Engine: 6.6L Duramax Turbo-Diesel V8 with 470 horsepower and 36-gallon fuel tank
• Transmission: 10-Speed Automatic
• Exterior Color: Sterling Metallic
• Interior: Jet Black with Kalahari Accents, Perforated Leather Seating
• Packages: AT4 Preferred Package (Universal Home Remote, sliding rear power window, LED roof marker lamps), Technology Package (Rear Camera Mirror, 15" multicolor Head-Up Display), Black Badging Package, X31 Off-Road Package (twin-tube Rancho shocks, skid plates, Hill Descent Control), and Gooseneck/5th Wheel Prep with Gooseneck Hitch Package (gooseneck ball and chain tiedown kit)
• Towing & Trailering: 18,500 lb towing capacity, Integrated Trailer Brake Controller, ProGrade Trailering System with Hitch Guidance, HD Surround Vision, Bed View Camera with 2 trailer camera provisions, and Trailer Side Blind Zone Alert
• Off-Road Capability: X31 Off-Road suspension, twin-tube Rancho shocks, skid plates, Hill Descent Control, Off-Road High Clearance Steps, and Red vertical recovery hooks
• Interior Comfort: Heated and ventilated front seats, heated rear outboard seats, heated steering wheel, 10-way power driver and passenger seats, dual-zone automatic climate control, 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" color Driver Information Center
• Safety: Sierra HD Pro Safety suite — Forward Collision Alert, Automatic Emergency Braking, Front Pedestrian Braking, Lane Departure Warning, IntelliBeam, HD Surround Vision, Rear Cross Traffic Alert, Front and Rear Park Assist, and Safety Alert Seat
• Exterior Highlights: 20" high-gloss Black aluminum wheels, LT275/65R20 all-terrain tires, GMC MultiPro Tailgate with EZ Lift assist and power lock/release, spray-on bedliner, Smoked Amber LED roof marker lamps, animated LED projector headlamps, cargo bed LED lighting, and LED fog lamps
• Work Capability: 11,350 lb GVWR, heavy-duty dual batteries with 1,460 cold-cranking amps, 220-amp alternator, and 120V power outlets in cab and bed

Expert Insights

Reviewers at Kelley Blue Book and Edmunds consistently rank the Sierra 2500 HD among the best heavy-duty pickups for its refined interior, class-leading trailering technology, and the smooth, torque-rich character of the Duramax Diesel. The AT4 trim adds genuine off-road hardware to an already capable platform — making it the right choice for drivers who need a truck that works as hard as they do, whether that's pulling livestock trailers across the plains or navigating remote job sites.

Visit Beadle Chevrolet–GMC in Mobridge, SD

Come see this 2026 GMC Sierra 2500 HD 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!