The 2025 Chevrolet Silverado 2500 HD Trail Boss does a lot of things better than ... The diesel V8 should return better fuel economy than the gas V8, but I averaged a pretty dismal 12.9 miles ...

For model year 2025, Chevrolet added the Trail Boss package as an option for the ... the 36-gallon tank and returned the truck with the fuel gauge at just under the quarter mark.