2026 GMC Sierra 3500

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.

- Wireless Apple CarPlay and Android Auto
- HD Surround Vision
- Off-Road High Clearance Step
- Gooseneck/5th Wheel Prep Package
- AT4 Premium Plus Package
- Bose Premium 7-Speaker Sound System
- 120-Volt Bed Mounted Power Outlet
- 10-Way Power Driver and Passenger Seats
- Heated and Ventilated Front Seats
- Heated Rear Seats
- Power Sunroof
- 20 High Gloss Black Aluminum Wheels

This 2026 GMC Sierra 3500HD AT4 is the ultimate off-road companion, engineered to tackle any terrain with confidence. Powered by the renowned Duramax 6.6L V8 Turbodiesel engine, this Sierra delivers best-in-class towing and hauling capabilities, making it the perfect choice for your toughest jobs and wildest adventures.

Elevating the driving experience, the Sierra 3500HD AT4 comes equipped with an array of premium features. The HD Surround Vision system provides you with a 360-degree view around the vehicle, ensuring maximum visibility and safety, while the Off-Road High Clearance Step makes it easy to access the cabin. The Gooseneck/5th Wheel Prep Package and AT4 Premium Plus Package further enhance the Sierra's capabilities, allowing you to tow your largest trailers and explore the most challenging off-road environments.

Inside, you'll be surrounded by unparalleled comfort and convenience. The Bose Premium 7-Speaker Sound System delivers a concert-hall-like audio experience, while the 120-Volt Bed Mounted Power Outlet keeps your tools and devices charged and ready. The 10-Way Power Driver and Passenger Seats, along with the Heated and Ventilated Front Seats and Heated Rear Seats, ensure that every journey is tailored to your preferences.

Topping it off, the Power Sunroof and 20 High Gloss Black Aluminum Wheels add a touch of style and sophistication to this rugged and capable truck. Whether you're tackling tough jobs or exploring the great outdoors, the 2026 GMC Sierra 3500HD AT4 is the ultimate tool for the job.

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.