2025 GMC Sierra 3500 HD

The 2025 Sierra 3500 HD is available in a range of trims, each tailored to specific needs and preferences. The foundational Pro 4WD trim brings essential features for functionality-first drivers, while climbing the trim ladder sees both aesthetic and functional additions. The SLE and SLT trims upgrade with animated LED taillamps and fog lamps, rain-sensing wipers, the highly versatile MultiPro™ Tailgate, and cargo lights. The AT4 and AT4X speak to the off-road enthusiast, equipped with specialized features like a factory lift, up to 35” MT tires, and heavy-duty skid plates for taking on challenging landscapes. If it’s elegance and luxury you want, the Denali trims show off exclusive features like a Vader Chrome grille and high-end conveniences such as illuminated power assist steps, hinting at the lavish interiors.

The 2025 GMC Sierra 3500 HD boasts a choice of 2 potent engines. The 6.6L V8 gas engine produces a formidable 401 hp and 464 lbs.-ft. of torque, ensuring that this truck has the muscle to tow and haul heavy loads with ease. If you need more muscle with outstanding efficiency and long-haul endurance, the 6.6L Duramax® Turbo-Diesel V8 engine takes performance to the next level, generating an astounding 470 hp and 975 lbs.-ft. of torque. With this powerhouse under the hood, the Sierra 3500 HD can tow up to 36,000 lbs. easily.

The 2025 GMC Sierra 3500 HD delivers unmatched performance, whether you're on the job site or taking it for a weekend adventure. The advanced drivetrain options, including both rear-wheel drive (RWD) and available 4WD, provide excellent traction and stability in various conditions. The Turbo-Diesel engine delivers a towing capacity that’s second to none—perfect for transporting heavy trailers, equipment, or cargo. The ProGrade® Trailering System instills confidence for the process, alongside up to 14 camera views—including the innovative Transparent Trailer View. The truck’s suspension system is designed to handle the demands of heavy-duty work, providing a smooth ride even when carrying substantial loads. The AT4X is prepared for any terrain with a 1.5” factory lift, FOX® twin-tube shocks, and a rear e-locking differential. Whether you’re hauling equipment for work or simply navigating the open road, the Sierra 3500 HD provides the power and performance to get you there.

This cabin hosts multiple Best-in-Class features to accommodate you in every way. Premium materials cater to your need for durability and luxury, offering leather upholstery, as well as Best-in-Class heated, ventilated, 16-way front seats with massage for a spa-like experience. Up to 6 passengers are treated to Best-in-Class front head and legroom. Technology is front and center, with a user-friendly 13.4” infotainment touchscreen—the largest in its class—giving wireless access to your apps, playlists, and hands-free communication through Apple CarPlay®, and Android Auto™. Add a Bose® premium audio system to enhance sound quality for a truly immersive driving experience. A 12.3” customizable Driver Information Center and a 15” Head-Up Display complete the available tech suite.?Whether you’re spending long hours on the road or simply enjoying a weekend getaway, the Sierra 3500 HD’s interior is designed to keep you comfortable and connected.

The GMC Pro Safety Package fortifies this truck, offering features such as the Safety Alert Seat which vibrates to alert you of potential hazards. The Surround Vision Camera provides a bird’s-eye view around the truck, while a Rear Camera Mirror gives unobstructed view behind you, making parking and maneuvering in tight spaces simple, even when towing. For added reassurance, Forward Collision Alert, Lane Change Alert with Side Blind Zone Alert, and Rear Cross Traffic Alert, work together to reduce the risk of accidents. With Automatic Emergency Braking, Following Distance Indicator, and Front Pedestrian Braking, this truck covers you from every angle.