* Engine: The 2010 Silverado 2500HD came with a few different engine options. A gasoline V8 will get better fuel economy than a diesel V8. The specific engine significantly impacts MPG.
* Drivetrain: A 2WD model will generally get better gas mileage than a 4WD model.
* Transmission: The type of transmission (automatic vs. manual, if offered) will also affect fuel economy.
* Driving habits: Aggressive driving, excessive idling, and towing significantly reduce fuel economy.
* Payload and Towing: Hauling heavy loads drastically reduces MPG.
* Vehicle condition: Proper maintenance, tire inflation, and overall vehicle condition play a role.
Therefore, I cannot give you a single MPG figure. However, you can expect relatively low fuel economy compared to smaller vehicles. Real-world estimates typically range from:
* Around 10-14 MPG combined (city and highway) for gasoline engines.
* Potentially slightly better, in the low to mid-teens, for diesel engines, but again this will depend heavily on driving conditions and load.
To find a more precise estimate for *your specific* 2010 Chevy Silverado 2500HD, I recommend:
* Checking the sticker on the driver's side doorjamb: This will show the EPA estimated fuel economy for your particular configuration.
* Consulting the owner's manual: This will also list the EPA estimates.
* Searching online resources: Websites like fueleconomy.gov (US) or similar sites in your country may provide more specific data based on engine and configuration.
Keep in mind that these are estimates, and your actual mileage may vary.