The 2026 GMC Sierra 2500HD AT4X is engineered for those who demand serious capability and refined comfort in a full-size truck.
- Duramax 6.6L V8 Turbodiesel engine with 470 horsepower and 975 lb-ft of torque
- 10-speed automatic transmission with 4WD and 2-speed active transfer case
- Gooseneck/5th wheel prep package with hitch platform and bed-mounted 7-pin trailer harness
- Hitch package with gooseneck ball and chain tiedown kit
- Upfitter switch kit (5) with configurable 3-30 amp and 2-20 amp circuits for aftermarket accessories
- 220-amp alternator and engine block heater for heavy-duty performance and cold-weather reliability
- Premium GMC infotainment system with 12-speaker Bose audio and SiriusXM 360L satellite radio
- 15-inch multicolor head-up display with driver memory and push-button start
- HD surround vision with bed view camera and trailer camera provisions
- Heated and ventilated leather-trimmed front seats with 16-way power adjustment and lumbar support
- Heated second-row seats and full-grain leather throughout the cabin
- Advanced safety features including automatic emergency braking, lane departure warning, and rear cross-traffic alert
- Spray-on pickup bedliner with GMC logo and rear wheelhouse liners
- 18-inch machined aluminum wheels with high-gloss black accents
This truck provides the foundation for serious work with the comfort and technology that make every mile enjoyable. The diesel engine delivers robust towing and hauling capability, while the interior surrounds you with premium materials and thoughtful conveniences. Built-in provisions for gooseneck and fifth-wheel towing, combined with the upfitter switch kit, make this AT4X ready to accommodate specialized equipment and accessories tailored to your specific needs.
The Sierra 2500HD AT4X strikes the balance between professional-grade capability and refined daily usability. Whether you're managing demanding job sites or navigating challenging terrain, the advanced suspension, four-wheel drive system, and sophisticated climate controls ensure confidence in every condition. Safety technologies like ultrasonic park assist, trailer side blind zone alert, and intelligent braking systems help protect you and your investment.
White exterior paint paired with gloss black accents creates a commanding presence on the road. The spray-on bedliner protects your cargo area, while heated door mirrors and rain-sensing wipers address practical everyday needs. This is a truck built to perform without compromise.
Uebelhor GMC Cadillac in Vincennes, IN. Where Customers Send Their Friends Since 1929.
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