2025 GMC Sierra 2500 Performance

Are you searching for a heavy-duty truck for your Raleigh jobsite or to tow your recreational vehicles to your favorite outdoor location past the Fuquay Varina area? Look no further than the 2025 GMC Sierra 2500 HD! With a choice of gas or turbodiesel V8 engines, this pickup can handle nearly any job. Discover more about the 2025 GMC Sierra 2500 specs, including the horsepower, torque, and mpg ratings, for both engine options in this guide from the team at Hendrick Buick GMC Cary!

GMC Sierra 2500 Engine Options

There are two GMC Sierra 2500 engine options available for 2025. Both boast plenty of horsepower under the hood and the torque to tow heavy loads—and while the GMC Sierra 2500 mpg hasn’t been released by the EPA yet, you can be sure that it won’t leave you stranded:

6.6L V8 Engine

• Available On: Pro, SLE, SLT, AT4, Denali, AT4X
• Horsepower: 401 hp
• Torque: 464 lb-ft
• Fuel Tank Capacity: 36 gallons
• Transmission: Automatic, 10-speed

6.6L Duramax V8 Turbo-Diesel Engine

• Available On: Pro, SLE, SLT, AT4, Denali, AT4X, Denali Ultimate
• Horsepower: 470 hp
• Torque: 975 lb-ft
• Fuel Tank Capacity: 36 gallons
• Transmission: Automatic, 10-speed

2025 GMC Sierra 2500 Specs: Towing Capacity

While many specs, like the GMC Sierra 2500 mpg, depend on the engine option you choose for your truck, its towing capacity depends on the truck’s weight, which means the cab size. We’ve broken down the relevant 2025 GMC Sierra 2500 specs below:

Crew Cab

• Max Conventional Trailering: 20,000 pounds
• Max Gooseneck/5th-Wheel Trailering: 21,870 pounds
• Max GCWR: 30,000 pounds
• Max Payload: 3,859 pounds

Double Cab

• Max Conventional Trailering: 17,900 pounds
• Max Gooseneck/5th-Wheel Trailering: 18,600 pounds
• Max GCWR: 26,000 pounds
• Max Payload: 3,788 pounds

Regular Cab

• Max Conventional Trailering: 14,500 pounds
• Max Gooseneck/5th-Wheel Trailering: 22,390 pounds
• Max GCWR: 30,000 pounds
• Max Payload: 4,064 pounds

Discover Your GMC Pickup at Hendrick Buick GMC Cary Today

Now that you know more about the 2025 GMC Sierra 2500 specs, it’s time to experience them firsthand. Contact us today to schedule your test drive in a new GMC Sierra HD at Hendrick Buick GMC Cary! Our team will review the specs of the GMC Sierra 2500 engine options to ensure you find the best configuration for your Holly Springs lifestyle, while our finance experts will find the best payment or lease plan for your budget. Jump-start the process when you get pre-approved for financing online. Learn more with our research hub, value your trade-in, and browse our new vehicle specials all online. We look forward to your visit to our Cary showroom!