2026 GMC Sierra 2500HD AT4

Find your next vehicle with confidence at Rob Green GMC in Twin Falls. From hard-working trucks and family-ready SUVs to affordable daily drivers, our pre-owned inventory is selected to give Magic Valley shoppers real value, strong options, and a better way to buy used.

This 2026 GMC Sierra 2500HD AT4 delivers serious capability with a Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, powered by 4WD confidence. With just over 10,000 miles, this truck is ready to tackle whatever comes next, whether you're managing a job site or navigating challenging terrain.

The AT4 Premium Plus Package brings professional-grade features and premium comfort to every drive. This Sierra comes equipped with power-retractable assist steps, and a 220-amp alternator for reliable performance. Factory extras include a gooseneck/5th wheel prep package, hitch package, and BF Goodrich off-road tires paired with body-color wheel arch moldings.

Key Features:
- Duramax 6.6L Diesel Turbocharged Engine
- 10-Speed Automatic Transmission with 4WD
- AT4 Premium Plus Package
- Gooseneck/5th Wheel Prep Package with Hitch Platform
- Power-Retractable Black Assist Steps
- BF Goodrich Off-Road Tires (LT275/65R20)
- Heated and Ventilated Front Seats
- Premium Bose 7-Speaker Sound System with SiriusXM
- Multicolor 15 Head-Up Display
- HD Surround Vision with Trailer Cameras

Inside, luxury and function merge seamlessly. The cabin features a premium GMC infotainment system, SiriusXM satellite radio, wireless charging, and Apple CarPlay/Android Auto integration. Heated and ventilated front seats, a heated steering wheel, and power adjustable seats with lumbar support ensure every journey feels refined. Advanced technology includes a multicolor head-up display, HD surround vision, and hitch guidance with integrated trailer viewing.

This Sierra AT4 is built for those who demand durability, luxury, and off-road readiness in one truck. The combination of diesel power, advanced towing preparation, and premium appointments makes this an exceptional choice.

When you choose Rob Green GMC, you're choosing a locally owned dealership that works hard to make the used vehicle shopping experience simple, transparent, and enjoyable. Our team is here to help with vehicle information, trade values, financing options, and support long after the sale. We proudly serve Twin Falls, Burley, Boise, Jerome, Kimberly, Pocatello, and drivers across the Magic Valley. Contact Rob Green GMC in Twin Falls, Idaho today to schedule your test drive.