Id like to see what everyones towing Gas mileage is. Hand Calculations only and no high balling I have a lifted silverado 2500hd 6.0 gas. I pull a single axle 2000lb Trailer. Mix of city highway and street diving with trailer on full time, 6.6mpg. Wanting to know if there are any 2011 silverado hd diesel trucks out there and their towing mpg.