Silverado 2500 HD:
- 6.6L Gas V8 with 6-speed automatic transmission:
- City: 15 MPG
- Highway: 20 MPG
- Combined: 17 MPG
- 6.6L Diesel V8 with 10-speed automatic transmission:
- City: 18 MPG
- Highway: 24 MPG
- Combined: 20 MPG
Silverado 3500 HD:
- 6.6L Gas V8 with 6-speed automatic transmission:
- City: 15 MPG
- Highway: 19 MPG
- Combined: 16 MPG
- 6.6L Diesel V8 with 10-speed automatic transmission:
- City: 17 MPG
- Highway: 23 MPG
- Combined: 19 MPG
Please note that these are just estimates, and actual gas mileage may vary due to factors like traffic conditions, payload weight, towing, and driving style. It's always a good idea to consult the owner's manual or relevant online resources for the most accurate gas mileage information for a specific Silverado HD model and configuration.
