2024 Gmc 3500hd Duramax Mpg. View detailed gas mileage data for the 2024 gmc sierra 3500hd. Search by make for fuel efficient new and used cars and trucks.

The most accurate 2024 gmc sierra 3500 hds mpg estimates based on real world results of 506 thousand miles driven in 43 gmc sierra 3500 hds Fuel economy of the 2024 gmc sierra 3500hd.