2026 GMC Sierra 3500 Engine Options
2026 GMC Sierra 3500 Engine Options
The 2026 GMC Sierra 3500 offers powerful engine options engineered for drivers who require maximum heavy duty capability, exceptional towing strength, and long term durability. Built with professional grade engineering, this heavy duty truck delivers the performance needed to handle the most demanding workloads while maintaining smooth and controlled operation. At our dealership in Tinley Park, IL, we help drivers explore available engine options so they can select the ideal balance of power, efficiency, and capability for their specific needs.
6.6L V8 Gas Engine 🡫
The standard engine in the 2026 GMC Sierra 3500 is a 6.6 liter V8 gas engine designed to deliver dependable heavy duty performance. This engine produces 401 horsepower and 464 lb ft of torque, providing the strength needed for hauling cargo, towing trailers, and handling demanding job site tasks. Its strong horsepower output allows confident acceleration even when carrying heavy loads, while the torque supports reliable towing and hauling capability.
Paired with the Allison 10 speed automatic transmission, this engine delivers smooth gear transitions and optimized performance across a variety of driving conditions. The transmission continuously adjusts gear selection to provide efficient power delivery whether driving on highways, city roads, or challenging work environments.
- 6.6 liter V8 gas engine producing 401 horsepower
- 464 lb ft of torque for strong hauling capability
- Allison 10 speed automatic transmission for smooth shifting
- Engine engineered for heavy duty durability
- Reliable performance for both work and everyday driving
Duramax 6.6L Turbo-Diesel V8🡫
The available Duramax 6.6 liter turbo diesel V8 engine provides exceptional heavy duty performance and maximum towing capability. This engine produces 470 horsepower and an impressive 975 lb ft of torque, delivering outstanding pulling power and control when towing extremely heavy loads. The high torque output allows the 2026 GMC Sierra 3500 to tow large trailers, equipment, and recreational vehicles with greater efficiency and confidence.
This engine is also paired with the Allison 10 speed automatic transmission, which enhances performance by optimizing gear selection and delivering smooth and consistent power delivery. When properly equipped, the Duramax diesel engine allows the 2026 GMC Sierra 3500 to achieve a maximum towing capacity of up to 36,000 pounds, making it ideal for the most demanding towing applications.
- Duramax 6.6 liter turbo diesel V8 engine producing 470 horsepower
- 975 lb ft of torque for maximum towing strength
- Allison 10 speed automatic transmission
- Maximum towing capacity of up to 36,000 pounds when properly equipped
- Designed for extreme heavy duty towing and hauling performance
Why Buy From Tony Rizza Buick GMC in Tinley Park, IL?
When you shop with us at Tony Rizza Buick GMC in Tinley Park, IL, you gain access to a knowledgeable team committed to helping you find the right heavy duty truck. We proudly offer a wide selection of new GMC trucks, including the powerful and capable 2026 GMC Sierra 3500. Our team will help you explore engine options, trims, and features so you can choose the truck that fits your capability and performance requirements.
We are dedicated to delivering exceptional service from purchase through ownership. From competitive pricing and flexible financing options to expert maintenance and service support, we work to ensure your complete satisfaction. Visit Tony Rizza Buick GMC in Tinley Park, IL today to explore our inventory and discover why so many drivers choose us for their next GMC Sierra 3500.