Silverado 2025 High Country Mpg. The silverado hd’s driveline avoids any torque management tricks and can dump its diesel twist right off the line if your tire budget allows for it. The high country model of the silverado 1500 goes up against the gmc sierra 1500 in denali trim.

Use our handy tool to get estimated annual fuel costs based on your driving habits. Available on custom trail boss, lt.