2024 Denali Duramax. Going next week to order my truck, and i'm seriously torn on which to get. Does anyone have any real world data on the 2024 6.6 gas v/s 6.6 diesel fuel economy.

Detailed specs and features for the 2024 gmc sierra 2500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine. † and an available max towing capacity of up to 36,000 lbs.