The 2020 Silverado 2500 and 3500 models feature numerous changes from the inside out. Some might not be quite so obvious such as a new 28" radiator fan for better cooling, upgraded rear differentials, 30% larger-diameter prop shafts and larger front and rear axles. There’s even a handy sticker on the door frame to remind you of trailer weight ratings. When it comes to the big ticket changes, see the top six at right. ~By Kent Sundling
1. 6.6-liter V8 gas engine with direct injection — a first for a heavy duty. With more power and torque than the 6.0-liter (401 hp and 464 lb.-ft. of torque versus 360 hp and 380 lb.-ft.), the new engine can tow 18% more.
2. Allison 10-speed transmission with four more gears. Matched with the 6.6-liter V8 Duramax diesel engine, towing capacity is now 35,500 lb., a 12,500-lb. increase versus 2019 models.
3. Automatic engaging four-wheel drive. A first in the segment allows the truck to shift between two-and four-wheel drive based on conditions.
4. 15 camera views. When using your blinker, the cameras show the entire profile of your trailer extending three lanes wide. There’s a front camera too.
5. Wider, longer and taller. The 2020 models have 3" more rear seat leg room, 5" longer wheelbase and the standard bed is now extended to 6' 10".
6. Easier to fill diesel exhaust fluid tank. The 7-gal. tank is now tucked inside the frame and the opening is inside the fuel door. There's also a DEF gauge.
Diesel Engine Debuts on Half Ton
The 3.0-liter Duramax diesel engine is finally available on the new Silverado 1500. The 277-hp in-line aluminum six-cylinder engine is rated at 29 highway miles per gallon for the four-wheel drive. Torque output settles at 460 lb.-ft. at max towing capacity of 9,300 lb. GM’s new 10-speed automatic transmission allows the new diesel to stay in its power range with closer gear ratios. To top it off, the new half-ton diesel is the same price as the 6.2-liter gas engine. The 3.0-liter 1500 is the only half-ton diesel with exhaust brake. Last, but not least, there's a DEF gauge.