If your work demands a truck that never flinches, the 2026 GMC Sierra HD was built for exactly that moment. Whether you tow livestock, a fifth-wheel camper, or heavy equipment through rugged Utah terrain, these heavy-duty trucks deliver the capability to get it done. Learn about the GMC Sierra 2500 and GMC Sierra 3500 with Provo GMC Cadillac.
Two Powerful Engines, One Platform
The standard 6.6-liter V8 engine in the 2026 GMC Sierra HD produces 401 horsepower and 464 lb-ft of torque, giving you reliable muscle for everyday hauling and lighter trailering. Step up to the available Duramax® 6.6-liter turbodiesel V8, and that torque figure climbs to a commanding 975 lb-ft. Both powerplants pair with an Allison 10-speed automatic transmission for smooth, confident shifting under load.
GMC Sierra 2500 vs 3500 Towing
The GMC Sierra 2500 HD tows up to 22,500 lb when properly equipped, with a maximum payload of 3,759 lb. When the job demands more, the GMC Sierra 3500 HD steps in with gooseneck towing capacity up to 36,000 lb and payload up to 7,290 lb. It’s also available with dual rear wheels for added stability under extreme loads. The available ProGrade Trailering System™ adds up to 14 camera views on either model, making hookup and lane changes more manageable on the road.
Build Your 2026 GMC Sierra HD at Provo GMC Cadillac
The 2026 GMC Sierra HD lineup covers every hauling need right here in Utah. Visit us at Provo GMC Cadillac in Provo, UT, and let our team walk you through every trim and configuration. We are here to help you find a GMC Sierra HD model that works as hard as your biggest jobs demand, season after season.