Big Changes In 2024 Sierra From 2024. For hauling, the denali ultimate comes standard with the 6.6l duramax diesel engine. 2024 gmc sierra 1500 specs at a glance.

The 2024 gmc sierra 2500 hd underwent a refresh for the 2024 model year that included minor exterior changes but big changes under the hood along with increa. For hauling, the denali ultimate comes standard with the 6.6l duramax diesel engine.