2026 GMC Sierra 2500

The 2026 GMC Sierra 2500HD Denali represents professional-grade capability combined with premium comfort and technology. This white diesel powerhouse delivers the reliability and performance demanded by those who need serious towing and hauling capability without compromising on refinement.

- 13.4 diagonal color touchscreen GMC Premium Infotainment system
- Wireless Apple CarPlay and Android Auto connectivity
- HD Surround Vision with multiple camera provisions
- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission
- Power-retractable assist steps with LED perimeter lighting
- Denali Reserve Package including power sunroof and Technology Package
- Gooseneck/5th Wheel Prep Package with hitch platform
- 22 gloss black aluminum wheels with all-terrain tires
- Bose Premium 7-Speaker Sound System with SiriusXM
- Heated and ventilated front seats with 12-way power adjustment
- Spray-on bedliner with GMC logo
- Trailer Tire Pressure Monitor Sensors
- Off-Road Suspension with 2-Speed Active Transfer Case
- Multicolor 15 Head-Up Display
- Upfitter Switch Kit with five configurable circuits

The Sierra 2500HD Denali provides the muscle you need with a 470-horsepower turbodiesel engine capable of generating 975 lb-ft of torque. The 10-speed automatic transmission ensures smooth power delivery across varying load conditions, while the 4WD system with Hill Descent Control gives you confidence in any terrain. The gooseneck and fifth-wheel prep package comes factory-ready for serious trailer work, and the trailer tire pressure monitoring system helps you stay informed on the road.

Inside, this truck refuses to compromise on driver comfort and convenience. The heated and ventilated leather-appointed front seats adjust in twelve directions with lumbar support, while the Denali Reserve Package brings a power sunroof and advanced technology features. The 13.4-inch touchscreen serves as command central for navigation, entertainment, and vehicle controls, with wireless smartphone integration through Apple CarPlay and Android Auto keeping you connected seamlessly.

Modern safety technology is woven throughout this Sierra. Automatic emergency braking, forward collision alert, lane departure warning, and rear cross traffic alert work together to help prevent accidents. The HD Surround Vision system with bed view camera and trailer viewing software provides the visibility you need when maneuvering in tight spaces or backing up with a trailer. Ultrasonic front and rear park assist technology makes parking and docking easier than ever.

This truck is built for the owner who demands function and form in equal measure. The black badging package, signature chrome Denali grille, and body-color wheel arch moldings deliver distinctive styling, while the spray-on bedliner protects your cargo area. With an 80-amp heavy-duty battery, 220-amp alternator, and engine block heater, this Sierra