2025 GMC Sierra HD Gainesville TX

For those who demand exceptional strength, cutting-edge technology, and premium refinement, the 2025 GMC Sierra HD is built to tackle the toughest jobs with confidence. Whether you're towing a massive trailer or hauling heavy loads, this heavy-duty truck delivers best-in-class capability with up to 36,000 pounds of towing capacity to make every job easier.

At Glenn Polk Auto in Gainesville, TX, we are proud to offer the newly refined 2025 GMC Sierra HD, featuring enhanced towing technology, a premium interior, and advanced driver assistance features. Explore our inventory today and experience the power of the Sierra HD today!

The 2025 GMC Sierra HD is built for serious towing, advanced technology, and premium comfort. It offers two powerful engines: a 6.6-liter V8 gas engine with 401 hp, 464 lb-ft of torque, and up to 22,500 lbs of towing, or the available 6.6-liter Duramax Turbo-Diesel V8 with 470 hp, 975 lb-ft of torque, and a maximum 36,000-lb towing capacity with dual rear wheels and a gooseneck hitch. An exhaust brake enhances downhill control, while an Allison 10-speed automatic transmission ensures smooth performance.

For towing confidence, ProGrade Trailering Technology offers up to 14 camera views, including Transparent Trailer View, and Adaptive Cruise Control with Trailering, which adjusts for added weight. A trailer-brake controller is now standard across all trims, while front and rear parking sensors are available on Pro and SLE trims with the Pro Safety Plus package.

Inside, the largest-in-class 13.4-inch touchscreen, 15-inch Head-Up Display, and 12.3-inch Driver Information Center provide seamless connectivity. Available 16-way power front seats with massage and a premium Bose® audio system enhance comfort. With Apple CarPlay®, Android Auto™, and Wi-Fi connectivity, staying connected is effortless.New for 2025, Adaptive Cruise Control with Trailering expands to AT4 and Denali trims, and parking sensors are now available for base models.