2026 GMC Sierra 3500 HD Chassis Cab in Wytheville, VA

Built To Shoulder The Big Jobs

When your workday revolves around heavy loads, tight deadlines, and specialized equipment, the 2026 GMC Sierra 3500 HD Chassis Cab is built to be the backbone of your business. This heavy-duty commercial truck is designed as a strong foundation for a wide variety of aftermarket upfits, from dump beds to utility bodies and more, so you can tailor it to your trade. With Regular Cab and Crew Cab configurations and multiple cab-to-axle lengths available, it’s ready to serve as everything from a single work truck to the core of your fleet. When you’re ready to upfit for your business needs, you can explore the 2026 GMC Sierra 3500 HD Chassis Cab at Aschenbach Chevrolet GMC.

2026 GMC Sierra 3500 HD Chassis Cab Trim Levels

Work-Ready Hardware

Under the hood, the 2026 GMC Sierra 3500 HD Chassis Cab offers two proven powertrains. The available Duramax® 6.6L Turbo-Diesel V8 delivers 470 horsepower and 975 lb.-ft. of torque, paired with a 10-speed automatic transmission and an exhaust brake to help improve control when towing. The 6.6L V8 gas engine is also matched with a 10-speed automatic and produces 401 horsepower and 464 lb.-ft. of torque, with a 10.8:1 compression ratio for strong performance under load. Available dual alternators, offered with both gas and diesel engines, can deliver approximately 14 volts and 390 amps combined to help power jobsite tools and equipment.

Capability numbers back up that muscle. The 2026 GMC Sierra 3500 HD Chassis Cab offers a max available torque of 975 lb.-ft., a max available payload up to 7,329 lbs. on Regular Cab models, a max GVWR of 14,000 lbs., and a max GCWR of 40,000 lbs., depending on configuration. Close gear spacing in the 10-speed transmission helps the engine stay in its optimal range across varying loads and terrain, and an available chain-driven Power Takeoff (PTO) on Duramax 4WD models allows you to transfer engine power to aftermarket equipment like generators or hydraulic pumps.

Stability, Control & Upfit Flexibility

Out on the job, the 2026 GMC Sierra 3500 HD Chassis Cab is engineered for control and confidence. Hill Start Assist momentarily engages the brakes to help prevent rollback on steep grades when transitioning from the brake to the accelerator, while Park Grade Hold Assist helps prevent vehicle movement by applying the brakes at each wheel when shifting out of park on a hill while trailering. StabiliTrak® electronic stability control monitors traction and can help reduce wheel slip to improve stability in challenging conditions.

Because every business operates differently, the 2026 GMC Sierra 3500 HD Chassis Cab is designed for extensive upfit flexibility. GMC highlights common applications such as dump beds, flatbeds, utility/service bodies, platform or stake bodies, snowplow/spreader setups, and ambulance/rescue bodies, giving you a clear idea of how this truck can be configured for your field. General Motors can also refer you to specialty vehicle manufacturers familiar with GM products to help streamline the upfitting process.

Connected Cab & Fleet-Focused Technology

Inside the cab, the 2026 GMC Sierra 3500 HD Chassis Cab is built to keep drivers informed and businesses connected. Available customizable screens include a 13.4-in. diagonal center touchscreen and a 12.3-in. diagonal digital Driver Information Center, creating a modern, easy-to-read command hub for vehicle data and infotainment.

For fleet operators, available OnStar Vehicle Insights® helps you manage your vehicles and gain real-time perspective on your business. Working with a GMC Business Elite Dealer can further simplify ordering, upfitting, and maintaining your 2026 GMC Sierra 3500 HD Chassis Cab fleet.

Put Your Truck to Work

From its powerful engines to its diverse range of capabilities, the 2026 GMC Sierra 3500 HD Chassis Cab is built to be a serious tool for serious work. If your business needs a heavy-duty chassis cab that can be configured for everything from flatbeds to service bodies and beyond, visit Aschenbach Chevrolet GMC to explore the 2026 GMC Sierra 3500 HD Chassis Cab today!