2026 GMC Sierra 3500 HD

The 2026 GMC Sierra 3500 HD is engineered for unmatched power and performance. It offers a choice of robust engines, including the legendary 6.6-liter V8 gas engine and the available Duramax® 6.6-liter Turbo-Diesel V8. The diesel engine delivers an impressive 470 horsepower and a staggering 975 pound-feet of torque, making it ideal for towing and hauling heavy loads. With a maximum towing capacity of up to 36,000 pounds when properly equipped, the Sierra 3500 HD is ready to handle any challenge.

Paired with the Allison® 10-speed automatic transmission, this truck ensures smooth shifts and optimal performance under load. Its advanced trailering technologies, such as Trailer Sway Control and an available ProGrade™ Trailering System, provide confidence and control on every journey.

Step inside the 2026 GMC Sierra 3500 HD, and you'll find a cabin that blends rugged durability with premium comfort. The spacious interior offers high-quality materials and thoughtful design elements to enhance your driving experience. Available leather-appointed seating, real wood accents, and a heated steering wheel elevate the luxury feel.

The Sierra 3500 HD also prioritizes functionality with features like ample storage compartments, a center console large enough to hold a laptop, and available power-adjustable front seats. Whether you're heading to a job site or embarking on a long road trip, this truck ensures you ride in comfort.

The 2026 GMC Sierra 3500 HD is packed with advanced technology to keep you connected and in control. The standard GMC Infotainment System features a user-friendly touchscreen display with Apple CarPlay® and Android Auto™ compatibility, allowing seamless integration of your smartphone for navigation, music streaming, and hands-free calls.

For those who demand even more innovation, the available Head-Up Display projects key information onto the windshield, keeping your eyes on the road. Additionally, the truck offers up to 15 camera views, including a transparent trailer view, to make towing easier than ever before.

Safety is a top priority in the 2026 GMC Sierra 3500 HD. This truck comes equipped with a suite of advanced safety features designed to protect you and your passengers. Standard features include Forward Collision Alert, Automatic Emergency Braking, and Lane Departure Warning.

For added peace of mind, the available Driver Alert Package includes features like Rear Cross Traffic Alert and Lane Change Alert with Side Blind Zone Alert. With these technologies working together, the Sierra 3500 HD helps you navigate busy streets and highways in EUFAULA, OK, with confidence.

The 2026 GMC Sierra 3500 HD is available in multiple trims to suit various needs and preferences:

• Pro: A workhorse trim with essential features for heavy-duty tasks.
• SLE: Adds convenience features like a larger touchscreen and upgraded interior materials.
• SLT: Offers premium comfort with leather-appointed seating and advanced technology options.
• AT4: Built for off-road adventures with rugged enhancements like skid plates and all-terrain tires.
• Denali: The pinnacle of luxury and capability, featuring exclusive styling details and top-tier amenities.

Each trim level is designed to deliver professional-grade performance while catering to different lifestyles and requirements.

The 2026 GMC Sierra 3500 HD is more than just a truck—it's a powerful tool that combines strength, luxury, and innovation. Whether you're towing heavy equipment or enjoying a weekend getaway in EUFAULA, OK, this heavy-duty truck is built to exceed expectations at every turn. Visit your local dealership today to experience the professional-grade capabilities of the Sierra 3500 HD firsthand!