Uncompromising Performance
Under the hood, the 2026 GMC Sierra 1500 offers a range of powerful engine options. The available 6.2-liter V8 delivers an impressive 420 horsepower and 460 pound-feet of torque, while the 3.0-liter I-6 Duramax Turbo-Diesel provides 305 horsepower and 495 pound-feet of torque for excellent towing capacity. Pair either engine with the smooth-shifting 10-speed automatic transmission for optimized performance.
When properly equipped, the GMC Sierra 1500 boasts a maximum towing capacity of up to 12,500 pounds, making it an ideal choice for those who need to haul heavy loads around Irving. The available ProGrade Trailering System features an In-Vehicle Trailering App, making it easier than ever to monitor and control your trailer.