The 2025 GMC Sierra 3500 HD is a heavy-duty pickup truck for those who demand the utmost capability, comfort, and style. This rugged workhorse is engineered to handle the toughest jobs while coddling occupants with premium amenities. With powerful engine options, multiple cab and bed configurations, and cutting-edge technologies, the Sierra 3500 HD is ready for any challenge in Painted Post.
The Sierra 3500 HD offers a choice of powertrains to suit your needs. The standard 6.6-liter V8 gas engine produces a stout 401 horsepower and 464 pound-feet of torque. Step up to the available 6.6-liter Duramax turbodiesel V8 for even more muscle, which churns out an amazing 470 horsepower and 975 pound-feet of torque. Paired with the Allison 10-speed automatic transmission, this engine enables the Sierra HD to tow up to a class-leading 36,000 pounds when properly equipped.
Inside,the centerpiece is the 13.4-inch diagonal infotainment system with built-in Google apps, wireless Apple CarPlay and Android Auto, and available navigation. Luxurious appointments like leather seating, dual-zone climate control, and a Bose premium sound system are available on higher trims. The MultiPro tailgate offers six convenient functions for easier cargo access and loading.
The Sierra 3500 HD AT4 is ready to tackle the trail when the pavement ends. This off-road specialist has an Autotrac 2-speed transfer case, underbody skid plates, Rancho shocks, and aggressive 18-inch Mud Terrain tires. The AT4 looks the part, too, with a distinctive grille design, black chrome exterior accents, vertical red tow hooks, and available power assist steps.
For the ultimate premium refinement in Watkins Glen, choose the Sierra 3500 HD Denali. This range-topping trim coddles occupants with open-pore wood trim, premium leather seating, and an eight-inch digital driver information center. A standard ProGrade Trailering System with Hitch Guidance makes towing a breeze, while the 15-inch Head-Up display projects key information on your windshield. The MultiPro Audio System by Kicker brings the concert to the job site or campground.
The new 2025 GMC Sierra 3500 HD is available to test drive at SIMMONS ROCKWELL BUICK GMC in Elmira, NY. This heavy-duty pickup is great for towing boats to Seneca Lake or Watkins Glen. Drivers in Corning can visit the dealership to learn more about the Sierra HD's capabilities. If you need a truck that works as hard as you do, see the 2025 GMC Sierra 3500 HD today.