2026 GMC Sierra 2500

At Brennan Buick GMC, we're here for you throughout the life of your vehicle. If you're in the market for a new or used truck, SUV, or car, visit our dealership to see the best that Brennan Buick GMC has to offer.- Duramax 6.6L V8 Turbodiesel Engine with 10-Speed Automatic- 4WD with 2-Speed Active Transfer Case- Bose Premium Series 12-Speaker System with SiriusXM 360L- Premium GMC Infotainment System with Apple CarPlay and Android Auto- Multicolor 15'' Diagonal Head-Up Display- Bed View Camera with Trailer Camera Provisions- HD Surround Vision with Ultrasonic Front and Rear Park Assist- 16-Way Power Driver and Passenger Seats with Lumbar Support- Full Grain Leather Seat Trim with Heated and Ventilated Front Seats- Heated Rear Seats and 2nd Row Outboard Seating- Power Moonroof and Power Sliding Rear Window- Wireless Charging and Wireless Phone Projection- Gooseneck/5th Wheel Prep Package and Snow Plow Prep/Camper Package- Technology Package with Advanced Driver Assistance Features- 20'' Ultra-Bright Machined Aluminum WheelsThis 2026 GMC Sierra 2500HD Denali Ultimate in white represents a premium heavy-duty truck built for demanding work and refined daily driving. The Duramax 6.6L V8 Turbodiesel engine paired with the 10-Speed Automatic transmission delivers the capability you need for towing and hauling, while the 4WD system with 2-Speed Active Transfer Case ensures confident performance across varied terrain and weather conditions.The Denali Ultimate trim emphasizes luxury throughout the cabin. Full grain leather seat trim, 16-way power adjustable driver and passenger seats with lumbar support, and heated and ventilated front seats create a comfortable environment for long drives. Heated rear seats extend that comfort to all occupants. The genuine wood dashboard and door panel inserts, combined with the leather steering wheel, establish an upscale atmosphere uncommon in the heavy-duty segment.Technology integration is comprehensive on this model. The Premium GMC Infotainment System connects seamlessly with Apple CarPlay and Android Auto, while the Bose Premium Series 12-Speaker System with SiriusXM 360L delivers quality audio throughout the cabin. A multicolor 15'' diagonal head-up display presents essential driving information directly in your line of sight. Wireless charging and wireless phone projection add modern convenience to your daily routine.Safety and visibility features prioritize protection on every journey. The HD Surround Vision system, bed view camera with trailer camera provisions, and ultrasonic front and rear park assist help you navigate tight spaces with confidence. Advanced driver assistance features including automatic emergency braking, forward collision alert, front pedestrian braking, and rear cross traffic alert work together to help prevent accidents. Hitch guidance with hitch view and trailer side blind zone alert specifically support your towing operations.This truck comes equipped with specialty packages that expand its versatility. The Gooseneck/5th Wheel Prep Package and Snow Plow Prep/Camper Package demonstrate the factory's commitment to supporting diverse work applications. Additional features such as the block heater, dual heavy-duty 70-amp battery, and 220-amp alternator ensure reliable operation in demanding conditions. The spray-on pickup bedliner with GMC logo protects your cargo area from wear and damage.Visit us today to experience this 2026 Sierra 2500HD Denali Ultimate firsthand and discover how its combination of capability, luxury, and technology can serve your needs.