2025 GMC Sierra 2500 Performance

Do you need to tow more than 20,000 pounds for tasks around Richmond? Invest in a pickup truck that gives you the specs you require for your toughest jobs when you consider the GMC Sierra 2500 engine options and towing capacity. Whether you need a truck for job sites in San Pablo or campsites far off the beaten path, the GMC Sierra 2500 HD towing capacity can handle conventional trailering or gooseneck/fifth-wheel trailers that attach to the middle of the truck bed. 

Keep reading our guide to the 2025 GMC Sierra 2500 engine options and performance specs for more information from Hanlees Hilltop GMC. We’ll also dive into the GMC Sierra 2500 diesel towing capacity figures and the towing capacity by cab size to give you an idea of what weight limits there are for this vaunted vehicle.

GMC Sierra 2500 Engine Options

Choose between two GMC Sierra 2500 engines available for 2025. Both generate plenty of horsepower and torque to produce the GMC Sierra 2500 HD towing capacity numbers. One engine runs on gasoline, while the other is a diesel version that nearly doubles the torque output on Berkeley roads.

See the engine specs here:

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

GMC Sierra 2500 HD Towing Capacity Specs

You want a sturdy and safe pickup truck because you want to tap into the outstanding GMC Sierra 2500 diesel towing capacity. The towing capacity changes based on the cab size. The cab size may also determine which of the engines you have because the GMC Sierra 2500 diesel towing capacity is typically larger than an engine with gasoline. Talk to us about which engine goes with which cab sizes when you head to our dealership near El Cerrito for a test drive. 

See the towing specs here: 

GMC Sierra 2500 Towing Capacity for the 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

GMC Sierra 2500 Towing Capacity for the 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

GMC Sierra 2500 Towing Capacity for the 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

Test-Drive Your Favorite GMC Pickup at Hanlees Hilltop GMC

Contact us, call (510) 662-7148, or schedule a test drive whenever you’re ready to see what your favorite GMC pickup is truly capable of. If you think you don’t need the raw power behind a GMC Sierra 2500, consider a light-duty GMC Sierra 1500. Make sure to apply for financing to pre-qualify for an auto loan or lease.