2026 GMC SIERRA 3500HD SLE

2026 GMC Sierra 3500HD SLE Crew Cab 4WD for Sale in Mobridge, SD

Built for serious hauling, this brand-new 2026 GMC Sierra 3500HD SLE Crew Cab 4WD pairs the Duramax 6.6L Turbo-Diesel V8 with the Allison 10-Speed Automatic transmission and four-wheel drive with a 2-speed electronic transfer case. Finished in Summit White over a Jet Black interior, it is ready for cattle trailers, campers, hay season and long winter drives across the Dakotas.

This SLE is optioned for real work. The Gooseneck/5th Wheel Package adds stamped bed holes with caps, a 7-pin trailer harness and a spray-on bedliner, while the Preferred Package brings Hitch Guidance with Hitch View, adaptive cruise control and the in-vehicle trailering app. The Sierra HD Pro Safety Plus Package adds HD Surround Vision and a bed view camera, and the X31 Off-Road and Protection Package contributes Rancho shocks, skid plates and Hill Descent Control. Add the SLE Value Package with heated seats, a heated steering wheel and remote start, and this 2026 GMC Sierra 3500HD SLE is set up for every South Dakota season.

2026 GMC Sierra 3500HD SLE Crew Cab 4WD — Stock #6W182

• Drivetrain: Four-Wheel Drive (4WD) with 2-Speed Electronic Transfer Case and Auto-Locking Rear Differential
• Engine: Duramax 6.6L Turbo-Diesel V8
• Transmission: Allison 10-Speed Automatic
• Exterior Color: Summit White
• Interior: Jet Black, front 40/20/40 bench with center armrest storage and 60/40 cloth rear seat with storage
• Packages: SLE Value Package (SLE Convenience, SLE Heated and Remote Start Packages), Preferred Package, Sierra HD Pro Safety Plus Package, Gooseneck/5th Wheel Package, and X31 Off-Road and Protection Package
• Towing & Trailering: Trailering Package, Trailer Brake Controller, Hitch Package, Hitch Guidance with Hitch View, In-Vehicle Trailering App, Trailer Side Blind Zone Alert, trailer camera provisions, heated power-folding auto-dimming trailering mirrors with turn indicators, 3.42 rear axle ratio and 12,250-lb GVWR
• Performance: Off-road suspension with Rancho shocks, skid plates, Hill Descent Control, all-terrain tires, heavy-duty air cleaner, 220-amp alternator, high idle switch and upfitter switch kit
• Interior Comfort: Heated driver and passenger seats, heated steering wheel, 10-way power driver seat, dual-zone climate control, rear HVAC vents, and manual tilt and telescoping steering column
• Technology: Premium GMC Infotainment System with 13.4-inch diagonal touchscreen, Google built-in compatibility including navigation capability, wireless Apple CarPlay and Android Auto, 12.3-inch color driver information center, SiriusXM and OnStar
• Safety: Automatic Emergency Braking, Forward Collision Alert, Front Pedestrian Braking, Lane Departure Warning, Rear Cross Traffic Alert, Front and Rear Park Assist, HD Surround Vision, Bed View Camera and IntelliBeam
• Convenience: Remote vehicle start, keyless open and start, power sliding rear window, universal home remote, LED cargo bed lighting, and 120V outlets in the bed and instrument panel
• Exterior Highlights: Animated LED projector headlamps, LED fog lamps, chrome assist steps, CornerStep rear bumper, front recovery hooks, black molded splash guards and rear wheelhouse liners

Expert Insights

Reviewers at Kelley Blue Book and Edmunds consistently point to the Duramax and Allison pairing as the heart of the Sierra HD, praising its strong, composed towing performance and the truck's helpful trailering camera technology. This SLE puts that reputation to work with HD Surround Vision, Hitch Guidance and gooseneck/5th wheel prep already on board.

Visit Beadle Chevrolet–GMC in Mobridge, SD

Come see this 2026 GMC Sierra 3500HD SLE 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!