2025 GMC Sierra 1500 Performance

It all starts with four powerful 2025 GMC Sierra engine options. Turbocharged, gasoline, and diesel options might make it difficult for Houston and Channelview drivers to choose until they see the impressive GMC Sierra 1500 engine specs. No matter what’s under the hood, you’re going to get the power and GMC Sierra 1500 towing capacity you need when you shop with Big Star Buick GMC. We’ll help you assess your truck needs so you can get the level of performance you want at the right price. See what this brawny full-size truck can do for you when we start with the GMC Sierra 1500 engine options.

2025 GMC Sierra 1500 Engine Options  

All four GMC Sierra 1500 engine options are designed to dominate on Crosby job sites and roads. We’ve got the GMC Sierra 1500 engine specs, making it easy to choose which one is best for the amount of power you need. No matter which you choose, you’ll get the exceptional GMC Sierra 1500 towing capacity that’s ready to work for you: 

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 it’s great to have such tremendous engine power, how do your options impact the 2025 GMC Sierra 1500 mpg ratings? There’s quite a range of GMC Sierra 1500 mpg ratings, so if fuel economy is a top priority, there’s an engine that’s right for you. 

• 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

Experience the 2025 GMC Sierra 1500 Engine Options! 

Feel the power of the GMC Sierra 1500 engine specs in action with a test drive at Big Star Buick GMC. You’re welcome to test-drive more than one GMC Sierra 1500 so you can compare their performance. There’s no better way to ensure that you’re getting the performance you need in a truck you’re sure to love. Contact us today to schedule a test drive, or pay a visit to our showroom to get behind the wheel.