2025 GMC Sierra 1500 Performance

Need a truck that can provide the raw power you need on the job in Milford? The 2025 GMC Sierra 1500 is sure to help you finish your work with ease. Before you commit, first take a look at our guide detailing the following:

• GMC Sierra 1500 towing capacity
• GMC Sierra 1500 mpg
• GMC Sierra 1500 engine options

Once you review the 2025 GMC Sierra 1500 specs, be sure to contact us and schedule a test drive so you can experience the excellent performance of this truck in person, or take it one step further and visit our finance center team to discuss your purchase options.

2025 GMC Sierra 1500 Engine Options

In total, there are four powertrains for our Smyrna neighbors to consider. The 2025 GMC Sierra 1500 towing capacity and other GMC Sierra 1500 specs vary, depending on which engine you equip your Sierra with. Let’s compare the 2025 GMC Sierra 1500 engine specs and trim compatibility for each powertrain: 

2.7L TurboMax™ I4 Engine

Available On: Pro, SLE, Elevation

• Horsepower: 310 hp

• Torque: 430 lb-ft

• Max Towing Capacity: 9,500 pounds

• Transmission: 8-speed automatic transmission

5.3L EcoTec3 V8 Gas Engine

Available On: Pro, SLE, Elevation, SLT. Denali

• Horsepower: 355 hp

• Torque: 383 lb-ft

• Max Towing Capacity: 11,200 pounds

• Transmission: 10-speed automatic transmission

Duramax® 3.0L Turbo Diesel I6 Engine

Available On: SLE, Elevation, SLT, Denali, AT4, AT4X, Denali Ultimate

• Horsepower: 305 hp

• Torque: 495 lb-ft

• Max Towing Capacity: 13,200 pounds

• Transmission: 10-speed automatic transmission

6.2L EcoTec3 V8 Gas Engine

Available On: SLT, Denali, AT4, AT4X, Denali Ultimate

• Horsepower: 420 hp

• Torque: 460 lb-ft

• Max Towing Capacity: 13,000 pounds

• Transmission: 10-speed automatic transmission

2025 GMC Sierra 1500 MPG Ratings 

While the 2025 GMC Sierra 1500 engine options are remarkably powerful, you’ll be surprised when you view the GMC Sierra 1500 mpg ratings below. They’re exceptionally efficient for the half-ton truck segment. 

• Pro: 18 mpg city/21 mpg highway

• SLE: 18 mpg city/21 mpg highway

• Elevation: 18 mpg city/21 mpg highway

• SLT: 16 mpg city/20 mpg highway

• AT4: 22 mpg city/26 mpg highway

• Denali: 16 mpg city/20 mpg highway

• AT4X: 19 mpg city/20 mpg highway

• Denali Ultimate: 15 mpg city/19 mpg highway

Explore the 2025 GMC Sierra 1500 Specs at Kent County Motors

Work smarter, not harder by adding a new 2025 GMC Sierra 1500 to your Middletown garage. Now that you know more about what this truck has to offer, you can apply for financing online to secure a model of your own. If you’re not quite ready to commit, you can continue your research with our useful manufacturer information. Let Kent County Motors take your drives around Dover to new heights.