When your work demands a truck with serious capability, look no further than the 2025 GMC Sierra 3500 HD. This heavy-duty pickup, available at Mike Maroone GMC, is engineered to take on the toughest tasks with ease. With robust engine options, including the mighty Duramax 6.6-liter Turbo-Diesel V8 and strong transmission pairings, the Sierra 3500 HD delivers the power and torque you need to haul and tow heavy loads.
The 2025 Sierra 3500 HD is offered in various configurations to suit your requirements. Choose from Regular Cab, Double Cab, or Crew Cab models paired with a standard or long bed. With 4-wheel drive (4WD) and rear-wheel drive (RWD) options available, you can select the drivetrain that best matches your work environment. GMC provides six trim levels—Pro, SLE, SLT, AT4, Denali, and Denali Ultimate—each offering a unique blend of performance, technology, and comfort features to enhance your driving experience.
Discover the right 2025 GMC Sierra 3500 HD when you browse our new GMC inventory at Mike Maroone GMC. Our team is ready to help you find the perfect heavy-duty truck to conquer any job in Boulder, CO. Visit us today to experience the unrivaled capability and craftsmanship of the Sierra 3500 HD firsthand.