The 2021 GMC Sierra 3500 HD Chassis Cab is a work truck ready to be put to work. You can choose from two available Powertrains to fit the job that you need to do. The first Powertrain is the 6.6L V8 Gas Engine that gets 401 Horsepower and 464 lb.-ft. of torque. This truck is powerful and is a good option for those who may need to haul items to and from job sites. The second Powertrain is the 6.6L Duramax Turbo-Diesel V8 Engine that gets 445 Horsepower and 910 lb.-ft. of torque. If you need to tow, this is the truck for you. The Maximum available Payload in the 2021 GMC Sierra 3500 HD Chassis Cab is 7,571 lbs. Some other great features available to the 2021 GMC Sierra 3500 HD Chassis Cab are Dual Alternators, Electric Parking Brake, Park Grade Hold Assist, and StabiliTrak. With multiple different Upfits available, you are sure to find the work truck that meets your business's needs. You can stay fully connected in your work truck with the available 8-Inch Diagonal Infotainment System that features Apple CarPlay and Android Auto connectivity. You can also upgrade your 2021 GMC Sierra 3500 HD Chassis Cab to include a 4G LTE Wi-Fi Hotspot so you can always be connected no matter where your job takes you.