Shoppers in North Riverside, IL looking at the 2026 GMC Sierra 1500 have four engine options to consider. The base 5.3-liter V8 makes 355 horsepower along with 383 pound-feet of torque. Step up to the 6.2-liter V8, and you get 420 horsepower plus 460 pound-feet of torque. The 3.0-liter Duramax diesel produces 305 horsepower and 495 pound-feet of torque for serious towing jobs. A 2.7-liter TurboMax rounds out the lineup with 310 horsepower and 430 pound-feet of torque.
Transmission options pair well with each engine. A 10-speed automatic comes on most models and includes Tow/Haul Mode for pulling heavy loads. Cruise Grade Braking and Powertrain Grade Braking help maintain safe speeds on downhill stretches near Illinois roadways. An auto-locking rear differential provides better grip when road conditions get tricky.
Stop by Castle Buick GMC at 7400 Cermak Rd, North Riverside, IL to sit behind the wheel of a Sierra 1500 today.