Click here to see how the 2020 Silverado HD 6.6 gas did:    • How many MPG does the new Chevy 6.6 g...  
2021 Silverado 3500HD 4x4 Crew Cab Single Rear Wheel
L5P Duramax
10 Speed Auto
Moritz Gooseneck
Trailer Towing Fuel Mileage Test