The 6.6-liter turbodiesel provides the best towing capacity for the big truck.
Fully redesigned for the 2020 model year, the Chevrolet Silverado 2500HD is a capable workhorse with a maximum towing capacity of up to 18,500 pounds. Despite the divisive styling, the truck has been a big seller for Chevy.
However, to access that maximum towing capacity, you have to opt for the mighty 6.6-liter Duramax turbodiesel V8. This engine has been an option on every trim level besides the Custom, which was limited to the 6.6-liter V8 gas engine until now. But a new report by GM Authority claims that the Duramax V8 can now be paired with the Custom trim as well.
It's not hard to see the appeal of the Custom trim. At one notch above the entry-level Work Truck (WT), the Custom offers upgrades like larger wheels and carpeted flooring that make it look and feel a lot less spartan than the WT, while still offering an attractive price compared to more expensive trims. For buyers who wanted this trim with the turbodiesel engine, they can now have it.
That said, it appears Chevrolet hasn't yet availed this option on its website configurator, as the Custom can currently only be specified with the V8 gas engine. The Duramax V8 develops 445 horsepower and a colossal 910 lb-ft of torque, relative to the standard gas V8's 401 hp and 464 lb-ft.
Unlike the gas engine, the Duramax turbodiesel also gets access to a better ten-speed automatic transmission, as opposed to the standard V8's six-speed auto. Pricing hasn't yet been released for the Custom trim paired with the Duramax engine, but the WT gives us an idea of what to expect. For the WT in 2WD Crew Cab guise with the standard bed, upgrading from the default gas V8 to the turbodiesel V8 will cost an extra $10,165. We can anticipate a similar premium for the Custom model with the turbodiesel.
Elsewhere in the lineup, the 2021 Silverado 2500HD has been enhanced with several small upgrades, including the new Carhartt Special Edition that is available on the LTZ Crew Cab. However, the price has increased marginally over the 2020 model.