2025 GMC Sierra 2500 Performance

2025 GMC Sierra 2500HD
 

If you’re looking for a heavy-duty truck, it’s hard to top the performance of the 2025 GMC Sierra 2500 HD. With two powerful V8 engine options, including one gasoline and one turbodiesel, this heavy-duty pickup can handle any Raleigh hauling or Cary towing needs. Explore the 2025 GMC Sierra 2500 specs, including horsepower, torque, and mpg ratings of both engine options, in this guide from the team at Hendrick Chevrolet Southpoint in Durham!

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 and the equipment of each trim level. 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 Chevrolet Southpoint Today

Now that you know more about the specs for the 2025 GMC Sierra 2500 engine options, it’s time to experience their performance in person. Contact us today to schedule your test drive in a new GMC Sierra HD at Hendrick Chevrolet Southpoint! We will review the benefits of each engine option, plus the cab sizes, bed lengths, trim levels, and equipment that affect towing and payload capacities to find the best configuration for your Chapel Hill pickup needs. Save time when you get pre-approved for financing online and see how much you can save with our new vehicle specials. Our finance experts will find the best loan or lease for your budget!

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*Offer includes all dealer discounts and OEM incentives. Offer does not include tax, tag, title, fees, and other dealer installed options. Discount varies by model and stock number. Example stock #T85816. See dealer for details. Take retail delivery by 8/31/26. **Finance charges accrue from date of financing. Deferred monthly payments for 90 days. 0% APR for 60 months. Monthly payment is $16.67 for every $1,000 you finance. Example down payment: 6.8%. Must finance with GM Financial. Down payment required at signing, if applicable. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 8/31/26.

*Offer includes all dealer discounts and OEM incentives. Offer does not include tax, tag, title, fees, and other dealer installed options. Discount varies by model and stock number. Example stock #T85816. See dealer for details. Take retail delivery by 8/31/26. **Finance charges accrue from date of financing. Deferred monthly payments for 90 days. 0% APR for 60 months. Monthly payment is $16.67 for every $1,000 you finance. Example down payment: 6.8%. Must finance with GM Financial. Down payment required at signing, if applicable. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 8/31/26.

*Well-qualified customers who purchase a new, used, or certified pre-owned vehicle, 4 model years or newer with less than 60K miles between August 1, 2026 and August 31, 2026, and finance through a participating dealer and lender have the option to defer monthly payments for 90 days from contract date. Excludes Hendrick Performance vehicles. Finance charges begin to accrue on the date you sign the Retail Installment Sale Contract at the Annual Percentage Rate (APR) disclosed in the contract. May not be combined with other preferred lender financing offers. 75 months maximum term limit. Equal monthly payments only. Not available to Pennsylvania residents; see your dealer for details. Must take retail delivery by August 31, 2026. See dealer for complete down payment and interest rate options and details. Financing available to qualified buyers. Some exclusions apply. See dealer for complete details.

*Offer includes all dealer discounts and OEM incentives. Offer does not include tax, tag, title, fees, and other dealer installed options. Discount varies by model and stock number. Example stock #T25859. See dealer for details. Take retail delivery by 8/31/26. **1.9% APR for 36 months. Monthly payment is $28.60 for every $1,000 you finance. Example down payment: 22%. Must finance with GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery 8/31/26. ***Well-qualified customers who purchase a new, used, or certified pre-owned vehicle, 4 model years or newer with less than 60K miles between August 1, 2026 and August 31, 2026, and finance through a participating dealer and lender have the option to defer monthly payments for 90 days from contract date. Excludes Hendrick Performance vehicles. Finance charges begin to accrue on the date you sign the Retail Installment Sale Contract at the Annual Percentage Rate (APR) disclosed in the contract. May not be combined with other preferred lender financing offers. 75 months maximum term limit. Equal monthly payments only. Not available to Pennsylvania residents; see your dealer for details. Must take retail delivery by August 31, 2026. See dealer for complete down payment and interest rate options and details. Financing available to qualified buyers. Some exclusions apply. See dealer for complete details.

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