The heavy-duty versions of the Silverado were redesigned for 2015, when they received stronger cargo boxes, new exterior styling with improved airflow, and new interior styling. For 2018, High Country and Z71 versions get updated grille styling.
What’s Special
Standard 360-horsepower, 6.0-liter gas V-8
Available 445-hp, turbo-diesel 6.6-liter V-8 with 910 pounds-feet of torque
Maximum towing capacity of 20,000 pounds with a conventional trailer hitch (3500HD with dual rear wheels)
Maximum fifth-wheel or gooseneck towing capacity of 23,300 pounds (3500HD with dual rear wheels)