2024 6.6 Duramax Mpg. The 6.2l v8 or the new 6.6l powerhouse. Does anyone have any real world data on the 2024 6.6 gas v/s 6.6 diesel fuel economy.


2024 6.6 Duramax Mpg

2024 gmc sierra 1500 mpg. A camper is in my future plans.

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