2025 GMC Sierra 3500HD

The 2025 GMC Sierra 3500HD has six distinct trim levels to suit various preferences and needs. The Pro boasts 18-inch painted steel wheels, a black grille, and daytime running lamps for enhanced visibility. The SLE adds a touch of modern sophistication with 18-inch machined aluminum wheels, a chrome grille, and LED signature daytime running lamps. The SLT elevates the exterior and enhances visibility with 18-inch polished aluminum wheels, chrome assist steps, and LED fog lamps. The AT4 features 18-inch machined aluminum wheels with Dark Grey accents, a black chrome grille, and an off-road suspension for conquering rugged terrain. The Denali exudes luxury with 20-inch polished aluminum wheels, a Denali-exclusive grille, and power-retractable assist steps. The Denali Ultimate offers an unparalleled level of refinement and exclusivity.

The 2025 GMC Sierra 3500HD offers two powerful engine options for heavy-duty tasks. The standard 6.6-liter V-8 gas engine delivers a robust 401 horsepower and 464 pound-feet of torque for everyday driving and towing needs. The available Duramax 6.6-liter Turbo-Diesel V-8 engine is ready for the most demanding towing and hauling applications, generating an impressive 470 horsepower and a staggering 975 pound-feet of torque. Both engines pair with an available Allison 10-speed automatic transmission, ensuring smooth and efficient power delivery across diverse driving conditions.

The 2025 GMC Sierra 3500HD leads its class with a maximum towing capacity of up to 36,000 pounds (with proper equipment). With a maximum payload capacity of up to 7,442 pounds, the Sierra 3500HD is ready to handle the toughest loads with ease. The heavy-duty suspension and auto-locking rear differential enhance stability and control, while the available four-wheel-drive system provides added traction for challenging terrains. Additional features such as trailer sway control and hill start assist enhance the truck's capability.

Inside the 2025 GMC Sierra 3500HD, comfort and technology take center stage. The spacious cabin accommodates up to six passengers. The available 13.4-inch diagonal GMC Premium Infotainment System provides seamless connectivity. Apple CarPlay and Android Auto compatibility ensure easy access to your favorite apps and media. The available 12.3-inch diagonal driver information center places essential vehicle data at a glance. Optional features such as a wireless charging pad, heated and ventilated front seats, and a heated steering wheel add convenience and comfort. Optional leather-appointed seating and a Bose premium sound system create a luxurious and enjoyable driving environment.

The 2025 GMC Sierra 3500HD prioritizes safety with its features for protecting drivers and passengers. The GMC Pro Safety package's essential technologies, such as forward collision alert, automatic emergency braking, and front pedestrian braking, work together to prevent accidents. Lane-keep assist with lane departure warning and IntelliBeam auto high beams add security. The available GMC Pro Safety Plus package offers lane change alert with side blind zone alert, rear cross-traffic alert, and rear park assist. Additional features such as HD surround vision and trailer-side blind zone alert are available to provide a complete view of the vehicle's surroundings. OnStar safety and security services, teen driver technology, and a tire pressure monitoring system enhance the Sierra 3500HD's reputation as a safe and reliable choice.