2026 GMC Sierra 2500 HD Performance

The 2026 GMC Sierra 2500 is an HD truck that provides drivers throughout Willoughby and the surrounding areas with the power and performance they need to accomplish more. If you are interested in this model, learn about the new GMC Sierra 2500 specs today! Our guide reviews the new GMC Sierra engine options to help you decide whether to schedule a test drive at our dealership in Painesville. Contact Classic Buick GMC to schedule an appointment, and let us know if you have any questions. 

New GMC Sierra 2500 Engine Options And Specs

The new GMC Sierra 2500 specs impress, regardless of which engine your selected trim level includes. The available Duramax® diesel engine is standard on the Denali Ultimate and available on the Pro, SLE, SLT, AT4, and AT4. Check out the specs for each engine below as you consider your work and play needs in Mentor and the nearby communities: 

6.6L V8 Gas Engine 

• Horsepower: 401 
• Torque: 464 lb-ft
• Transmission: 10-speed automatic 

Duramax® 6.6L Turbo-Diesel V8 

• Horsepower: 470
• Torque: 975 lb-ft
• Transmission: 10-speed automatic
• Towing Capacity: 22,390 pounds*

The above towing capacity requires a 2500 HD Regular Cab long bed 2WD model that includes the available Duramax® 6.6L Turbo-Diesel V8 engine, Max Trailering Package, and other appropriate equipment. Other configurations also offer impressive towing capabilities, such as the GMC Sierra 2500 HD Crew Cab, which features an available max tow rating of up to 21,870 pounds.**

New GMC Sierra 2500 Standard And Available Performance Features

Whether you’re driving in Madison or anywhere else, the GMC Sierra 2500 includes features that make every ride safer and more enjoyable. Check out standard and available performance features across the configurations: 

• Adaptive Cruise Control with Trailering 
• Up to 13 camera views, including transparent trailer view
• MultiPro™ Tailgate and MultiPro Tailgate Audio System by Kicker®
• X31 off-road package with twin-tube Rancho® shocks and skid plates
• Auxiliary trailer camera
• Forward Collision Alert
• Following Distance Indicator
• Front Pedestrian Braking
• IntelliBeam
• Lane Departure Warning
• Automatic Emergency Braking
• And more! 

Experience The New GMC Sierra 2500 Specs At Classic Buick GMC

Do you have questions about the new GMC Sierra 2500 engine options? Are you ready to take a test drive at our dealership in Painesville? Call (440) 210-7116 or contact us online today. For more helpful reads about GMC vehicles, please browse our manufacturer research hub.

Frequently Asked Questions

What are the engine options and performance specs for the 2026 GMC Sierra 2500 HD? The 2026 GMC Sierra 2500 HD comes standard with a 6.6L V8 gas engine delivering 401 horsepower and 464 lb-ft of torque, while the available 6.6L Duramax Turbo-Diesel V8 produces 470 horsepower and a massive 975 lb-ft of torque. Both powertrains are paired with a professional-grade Allison 10-speed automatic transmission designed to optimize power delivery and towing efficiency.

How much can the 2026 GMC Sierra 2500 HD tow when properly equipped? When configured with the 6.6L Duramax Turbo-Diesel V8 and the Max Trailering Package, the 2026 GMC Sierra 2500 HD offers a maximum conventional towing capacity of up to 20,000 lbs and a maximum gooseneck/fifth-wheel rating of up to 22,390 lbs. Actual towing capacity varies based on cab configuration, bed length, and specific equipment; always consult your vehicle’s door jamb label for its specific ratings.

What performance technology is available to assist with towing in the 2026 Sierra 2500 HD? The 2026 model features the ProGrade Trailering System, which offers up to 14 available camera views, including a “Transparent Trailer View” that allows you to virtually see through a compatible hitched trailer. Other key performance technologies include Adaptive Cruise Control with Trailering and an In-Vehicle Trailering App that provides custom trailer profiles and pre-departure checklists.