2024 Hd Duramax 2024 Mpg. My average mpg in 5000 miles is 17.4 hand calculated with an average speed of 40.3 mph. View detailed gas mileage data for the 2024 gmc sierra 2500hd.

I drive it on the highway and in the city. The price of the 2024 chevrolet silverado 2500hd / 3500hd starts at $46,395 and goes up to $81,830 depending on the trim and options.