About This GMC Sierra 2500HD

The 2024 GMC Sierra 2500HD AT4 is a heavy-duty pickup designed to combine serious towing capability with modern technology and premium comfort. Finished in Onyx Black over a Jet Black and Kalahari leather interior, this example features both factory equipment and performance-oriented upgrades that enhance its capability and appearance.
Power comes from a 6.6-liter Duramax turbodiesel V8 producing 470 horsepower and 975 lb-ft of torque. The engine is paired with an Allison 10-speed automatic transmission that sends power to the rear or all four wheels through a robust four-wheel-drive system, providing strong towing capability and dependable performance for demanding workloads.
The exterior is finished in Onyx Black and features GMC's distinctive AT4 styling along with LED animated headlights and LED fog lights. Additional features include the MultiPro tailgate, which offers multiple configurations for easier cargo access and work functionality. This truck has been upgraded with 22-inch Hostile wheels wrapped in aggressive 35-inch Toyo Open Country M/T tires, giving it a bold stance and enhanced off-road capability. Additional upgrades include tinted windows, partial paint protection film applied to the hood and fenders, and a BAKFlip bed cover.
The suspension has been upgraded with a Cognito Motorsports leveling kit and Elka reservoir shocks for improved ride control and off-road performance. Further enhancements include aftermarket rear suspension airbags and Sulastic rear suspension shackles designed to improve ride quality and load handling when towing or hauling.
Inside, the cabin is trimmed in Jet Black and Kalahari leather upholstery and offers a wide range of comfort and technology features. The front seats are heated, ventilated, and power-adjustable, while rear passengers benefit from heated outboard seats. A heated steering wheel and dual-zone automatic climate control add additional comfort.
Technology features include a 12.3-inch digital driver information display and a large 13.4-inch touchscreen infotainment system with built-in navigation, Apple CarPlay, and Android Auto compatibility. The Bose premium sound system provides high-quality audio, while HD Surround Vision and advanced safety systems help improve visibility and driver awareness.
Additional factory packages include the Preferred Package, Technology Package, and Gooseneck/Fifth Wheel Package, which add features such as adaptive cruise control, a rear camera mirror, head-up display, power sunroof, power-retractable assist steps, and integrated trailer towing hardware.
With its powerful Duramax diesel engine, upgraded suspension components, advanced towing capability, and premium interior, this 2024 GMC Sierra 2500HD AT4 offers an impressive combination of strength, technology, and everyday usability.