2020 GMC Sierra 3500HD Overview
Completely redesigned for a new generation, the 2020 GMC Sierra 3500HD prioritizes responsive power, practical work features, and sophisticated technology for work and play. Get the Sierra 3500HD in Sierra, SLE, SLT, AT4 or Denali trims. Three cab styles and two cargo box sizes are available, and you can also opt for a capability-enhancing dual rear-wheel configuration.
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Powertrains and Performance
The 2020 GMC Sierra 3500HD offers a pair of powerful, capable engine options:
- The all-new 6.6-liter direct-injected V8, which is paired with a six-speed automatic transmission and makes 401 horsepower and 464 lb-ft of torque
- The 6.6-liter Duramax turbodiesel V8, which connects to a 10-speed Allison automatic transmission and makes 445 horsepower and 910 lb-ft of torque
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Towing and Hauling Capabilities
The 2020 Sierra 3500HD boasts massive towing and hauling capabilities. With the Duramax turbodiesel, the truck can yank up to 20,000 pounds using conventional towing methods. With fifth-wheel/gooseneck gear and a dual rear-wheel configuration, max diesel towing increases to an incredible 35,500 pounds. The Sierra 3500HD can haul an enormous payload, too — up to 7,442 pounds for certain dual rear-wheel models.
The 2020 Sierra 3500HD gives you an array of features to help you get the most out of your truck’s cargo box. Opt for the available six-function GMC MultiPro Tailgate, which offers features like load stopping, built-in steps, a work surface, and even an audio system. Each model comes with a side BedStep and a CornerStep rear bumper for easy bed access, along with other useful features like 12 tie-downs and cab-mounted cargo area lamps.
Travel in comfort behind the wheel of the 2020 Sierra 3500HD. Available leather trim, power lumbar adjustability, improved cushioning, and a more commanding seat height make the driver’s seat especially inviting. You can also outfit the interior of your Sierra 3500HD with luxurious options like a heated and leather-wrapped steering wheel, heated and ventilated seats, and push-button start. There’s plenty of space to stash all your stuff, too, especially with available cargo options like a secure console vault, rear underseat storage, and rear seatback storage.
Whether you’re pulling a trailer or listening to music, the 2020 Sierra 3500HD delivers technology to improve your driving experience. The standard GMC Infotainment provides a 7-inch touch screen, Apple CarPlay and Android Auto smartphone integration, and Bluetooth technology. Available 4G LTE Wi-Fi capability keeps you connected on the go. An optional 15-inch Head-Up Display helps you keep eyes trained on the road ahead. Tow with ease using the optional in-vehicle trailering app and up to 15 available trailering camera angles — including the innovative transparent trailer view.