Premium Package

Vehicle Features

• The 2025 GMC Sierra 2500HD AT4 brings together heavy-duty strength, rugged off-road character, and premium comfort in one impressive pickup. Finished in bold Onyx Black with a Jet Black interior featuring distinctive Kalahari accents, this truck delivers an aggressive yet refined appearance from every angle. Under the hood is a powerful 6.6L V8 engine paired with a smooth and responsive 10-speed automatic transmission. Combined with the capable 4WD drivetrain, this powertrain gives the Sierra 2500HD the strength and confidence needed for demanding work, towing, hauling, and challenging road conditions. The AT4 trim adds a more adventurous personality to the Sierra's proven heavy-duty platform. Its rugged design and four-wheel-drive capability make it well suited for drivers who need a serious work truck but also want something comfortable and capable for weekend trips and outdoor adventures. Inside, the Jet Black cabin with Kalahari accents provides a premium atmosphere that separates the AT4 from an ordinary heavy-duty pickup. The interior is designed around driver comfort, convenient controls, and plenty of space for passengers and gear. With its commanding Onyx Black finish, powerful 6.6L V8, 10-speed automatic transmission, and 4WD capability, this 2025 GMC Sierra 2500HD AT4 is an excellent choice for anyone looking for serious truck capability with upscale styling and everyday comfort.