2026 GMC Sierra 1500 Performance & Engine Specs

From daily commutes through North Little Rock to heavy-duty hauling across Little Rock and Sherwood, there’s precious little that the 2026 GMC Sierra 1500 can’t do. Available in eight unique trims—including the off-road-ready AT4X and the premium Denali Ultimate—this lineup is as formidable as it is versatile. With four powerful engine options, the 2026 GMC Sierra 1500 is built for Arkansas drivers who demand more from their trucks.

What Engines Are Available for the 2026 GMC Sierra 1500?

The 2026 GMC Sierra 1500 offers four distinct powertrains to match your specific needs in Central Arkansas. Whether you need the high-torque efficiency of a diesel or the raw power of a V8, we have the perfect fit. Before you arrive, be sure to apply for financing online to save time at the dealership.

2.7L 4-Cylinder TurboMax™

• 310 hp / 430 lb-ft of torque
• 8-speed automatic transmission
• Max Towing: Up to 9,400 pounds

5.3L EcoTec3 V8

• 355 hp / 383 lb-ft of torque
• 10-speed automatic transmission
• Max Towing: Up to 11,200 pounds

6.2L EcoTec3 V8

• 420 hp / 460 lb-ft of torque
• 10-speed automatic transmission
• Max Towing: Up to 13,100 pounds

Duramax® 3.0L 6-Cylinder Turbo Diesel

• 305 hp / 495 lb-ft of torque
• 10-speed automatic transmission
• Max Towing: Up to 13,300 pounds

Planning to put your new truck to work? Use our online payment calculator to find a plan that fits your budget. You can also visit our expert service team to discuss which engine is best for your specific towing requirements.

How Fuel-Efficient Is the 2026 GMC Sierra 1500?

Efficiency matters, whether you’re driving to Conway or hauling through Jacksonville. The 2026 GMC Sierra 1500 MPG ratings vary by engine and drivetrain:

• 2.7L TurboMax™: Up to 18 city / 21 highway MPG
• 5.3L EcoTec3 V8: Up to 16 city / 20 highway MPG
• 6.2L EcoTec3 V8: Up to 15 city / 19 highway MPG
• Duramax® 3.0L Turbo Diesel: Up to 21 city / 24 highway MPG

Typically, 2WD models offer slightly higher efficiency than 4WD configurations due to lower weight and drivetrain friction. If you are ready to upgrade, you can value your trade-in with Edmunds to see how much your current vehicle is worth today.

Test Drive the 2026 GMC Sierra 1500 in North Little Rock

Ready to experience GMC performance firsthand? Visit Gwatney Buick GMC in North Little Rock today for a test drive. Our team is here to help you find the right Sierra 1500 model and explain all current financial incentives available for Arkansas truck buyers.