2026 GMC Sierra 2500 HD Performance

The 2026 GMC Sierra 2500 is a heavy-duty truck engineered to provide commercial fleets, weekend adventurers, and hard workers throughout Peoria and the West Valley with the uncompromising power they need to dominate the job site. Whether you are hauling massive payloads down the Loop 101 Agua Fria Freeway or pulling heavy commercial equipment across Grand Avenue, the latest GMC Sierra 2500 specs are built to deliver. Our guide reviews the new heavy-duty GMC Sierra engine options to help you choose the right amount of muscle before scheduling a test drive at our dealership right here off Bell Road. Contact Liberty GMC to find your next workhorse, and let our team 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 AT4X configurations. Check out the specs for each engine below as you consider your work and play needs in Phoenix and the nearby communities:

6.6L V8 Gas Engine

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

Duramax® 6.6L Turbo-Diesel V8

• Horsepower: 470 hp
• Torque: 975 lb-ft
• Transmission: Allison® 10-speed automatic
• Maximum 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 Tempe 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 14 available 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 Auto High Beams
• Lane Departure Warning
• Automatic Emergency Braking
• Buckle to Drive

Experience The New GMC Sierra 2500 Specs At Liberty GMC

Whether you need the Earth-moving torque of the Duramax® Diesel to haul heavy equipment down to jobs in Mesa, or you’re towing a massive weekend toy hauler out past the White Tank Mountain Regional Park in Surprise, the Sierra 2500 HD handles it with poise. Ready to experience this raw capability firsthand at our showroom in Peoria? Call our sales team or contact us online today. Before making the short drive down from Historic Downtown Glendale or over from Phoenix, you can streamline your purchase by applying for financing securely from home and valuing your current trade-in with our instant cash offer tool. Visit Liberty GMC today to claim a heavy-duty pickup built to command Arizona roads and job sites with total authority!

Disclaimers:
*Requires a 2500 HD Regular Cab long bed 2WD model with available Duramax 6.6L Turbo-Diesel V8 engine, Max Trailering Package, Gooseneck/Fifth-Wheel Prep Package and gooseneck/fifth-wheel hitch. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.
**Requires a Crew Cab long bed 2WD model with available Duramax 6.6L Turbo-Diesel V8 engine, Max Trailering package, Gooseneck/Fifth-Wheel Prep Package, 18-inch or 20-inch wheels and tires and gooseneck/fifth-wheel hitch. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.