2020 Gmc Sierra 2500 Gas Engine
Choose from multiple trim levels of the next generation 2020 gmc sierra 2500hd and 3500hd like the sle slt denali or at4 trim.
2020 gmc sierra 2500 gas engine. Take a look at this new designed 2500 super clean lines and some nice upgrades. See all 64 photos. Sierra hd mov.
2020 gmc sierra 2500 hd at4 6 6l duramax. 2019 2020 2021 gmc sierra 2500hd 6 6 gas engine gmc release date price 2021 gmc sierra 2500hd 6 6 gas engine specs reviews owners manual 2021 gmc sierra 2500hd 6 6 gas engine changes photos redesign. Search by make for fuel efficient new and used cars and trucks.
Looking over our compiled 2020 gmc sierra fuel economy numbers we find the most fuel efficient engine option to be the duramax turbo diesel 3 0l lm2 i6 which posts a max of 23 mpg in the city. Close this window to stay here or choose another country to see vehicles and services specific to your location.