2025 GMC Sierra HD: The 2025 GMC Sierra HD is a full-size heavy-duty pickup truck known for its rugged performance and luxurious features. Available in 2500HD and 3500HD models, both in Regular Cab, Double Cab, and Crew Cab configurations. It competes with other heavy-duty trucks like the Chevrolet Silverado HD, Ford F-Series Super Duty and Ram Heavy Duty. New features for 2025 include an enhanced ProGrade Trailering System, Adaptive Air Suspension, and an updated 16.8-inch infotainment display.

The 2025 Sierra HD is available in several trim levels: Pro, SLE, SLT, AT4, Denali, and the new Denali Ultimate. It offers two powerful engine options6: a 6.6-liter V8 gasoline engine with 401 horsepower and 464 lb-ft of torque, and a 6.6-liter Duramax turbo diesel V8 engine producing 470 horsepower and a massive 975 lb-ft of torque8. Both engines are paired with an Allison 10-speed automatic transmission, providing smooth and efficient power delivery.

Pricing for the 2025 GMC Sierra HD starts at approximately $48,295 for the Pro trim, with higher trims like the Denali Ultimate reaching around $98,195. Standard safety features include adaptive cruise control, lane-keeping assist, blind-spot monitoring, and forward collision warning with automatic emergency braking. Optional equipment includes a premium Bose audio system, MultiPro tailgate, panoramic sunroof, and advanced trailering packages to enhance capability and convenience.

Visit the official GMC site for more information