his beast can handle ALL of your towing needs. You can safely tow up to 20,000 lbs in this truck. They call it Heavy Duty for a reason! The Sierra 3500 is packed with high-tech systems to keep you safe, as well as comforts like heated seats, Best-In-Class Crew Cab Front Head and Leg Room, and an in-vehicle trailering app. Similarly to the other GMC trucks, we suggest purchasing a well-fitted tonneau cover to protect the bed. You should also invest in an adjustable hitch so that you can tow everything from a small trailer to a huge camper!