2026 GMC Sierra HD: Farm-Tough Pulling Power
The 2026 GMC Sierra HD brings professional-grade strength and intelligence to the fields, job sites, and highways of southeast Iowa. This heavy-duty truck tows up to 36,000 lbs when properly equipped and harnesses 470 horsepower and 975 lb-ft of torque from its available 6.6-liter Duramax® Turbo-Diesel V8. Put these features to the test at Vaughn Automotive – Chevrolet Buick GMC of Ottumwa.
Power and Towing
Every GMC Sierra HD commands authority with its standard 6.6-liter gasoline V8 producing 401 horsepower and 464 lb-ft of torque, paired with a smooth ten-speed Allison automatic transmission. Step up to the available Duramax Turbo-Diesel V8 to unlock 470 horsepower and 975 lb-ft of torque for maximum pulling capability.
The Dual Rear Wheel configuration of this new GMC truck can tow up to 36,000 lbs and handle payloads as high as 7,290 lbs when properly equipped. Gooseneck and fifth-wheel prep packages add versatility, while integrated bed-view cameras simplify hitch alignment. Upfit-ready frames and the available GMC Multipro Tailgate™ give owners confidence in every job, from hauling feed to pulling heavy machinery.
Technology Features
The 2026 GMC Sierra HD integrates advanced connectivity and trailering tools to make heavy-duty work easier. ProGrade® Trailering technology features multiple camera views, including Hitch View and Transparent Trailer View, and the built-in Trailering App tracks maintenance and trailer profiles. Drivers also benefit from an available large infotainment display with Google built-in and OnStar® connectivity.
Safety Features
The GMC Sierra HD emphasizes security for every load and passenger. Available Adaptive Cruise Control with trailering support, IntelliBeam® automatic high beams, and StabiliTrak® with trailer sway control keep towing smooth and predictable. The optional HD Surround Vision™ camera system provides precise visibility for backing into barns, hitching trailers, or maneuvering around narrow farm gates.
Build Your 2026 GMC Sierra HD in Ottumwa, IA
Our GMC dealership in Ottumwa, IA, helps local drivers match the right 2026 GMC Sierra HD configuration to their work demands. Whether you need the precision of the 2500 model or the brawn of the 3500 model, you can explore both with a test drive and personalized towing consultation. Visit us today to build yours and get pre-approved for GMC financing to bring it home.