2026 GMC Sierra 2500

At McKenzie Buick GMC, we've proudly served Milton, FL and the surrounding communities since 1967. As a family-first dealership, we believe in doing business the right way—with transparent pricing both online and in-store, no surprises, and no games. Come experience the McKenzie Advantage and see why generations of customers say, We Are McKenzie.

- 13.4 DIAG COLOR TOUCH SCREEN GMC PREMIUM INFOTAINMENT
- HD SURROUND VISION
- WIRELESS APPLE CARPLAY AND ANDROID AUTO
- 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (Includes (K05) Engine Block Heater) (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm)
- Black Badging Package
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 4SG

This 2026 GMC Sierra 2500HD AT4X is a true powerhouse, delivering exceptional capability and premium features. Under the hood, the Duramax 6.6L V8 Turbodiesel engine provides immense power and torque, allowing you to conquer any task with ease. Paired with a 10-speed automatic transmission and 4-wheel drive, this Sierra is ready to take on the toughest terrain.

The exterior of the AT4X is boldly styled, with black badging, grille, and nameplates that give it a commanding presence. The spray-on bedliner and gooseneck/5th wheel prep package ensure you have the versatility to handle any hauling or towing needs. Inside, the cabin is packed with premium features, including a 13.4-inch color touch screen with wireless Apple CarPlay and Android Auto, HD Surround Vision, and a Bose premium audio system.

For added convenience and safety, this Sierra is equipped with a host of advanced technologies, such as Trailer Cam Provisions, Trailer Tire Pressure Monitor Sensors, Rear Cross Traffic Alert, and Ultrasonic Front and Rear Park Assist. The power-sliding rear window, heated and ventilated front seats, and heated rear seats provide a comfortable driving experience, no matter the weather.

Whether you're tackling tough jobs or embarking on off-road adventures, the 2026 GMC Sierra 2500HD AT4X is the ultimate heavy-duty pickup. Experience the power, capability, and premium features that make this truck a true standout in its class. Visit McKenzie Buick GMC today and let us show you why the McKenzie Advantage is the best choice for your next vehicle purchase.

Thank you for visiting McKenzie Buick GMC. Proudly serving the Milton community since 1967, we're committed to delivering a straightforward, transparent buying experience every step of the way. Conveniently located near Blackwater Bay at 6500 Caroline Street (Highway 90 at the Highway 89 Bypass), we offer a full selection of competitively priced new and pre-owned cars, trucks, and SUVs. Whether you're shopping, servicing, or ordering parts, our team is here to help with no surprises—just honest, reliable service. Reach out anytime or come experience the McKenzie Advantage for yourself.