Chevy Duramax Diesel 2024. Looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg. As for the powertrain specs, the 2025 chevy suburban now offers the new 3.0l i6 lz0 turbodiesel duramax engine, which replaces the outgoing 3.0l i6 lm2.

As for the powertrain specs, the 2025 chevy suburban now offers the new 3.0l i6 lz0 turbodiesel duramax engine, which replaces the outgoing 3.0l i6 lm2. A forum community dedicated to chevy and gmc duramax diesel owners and enthusiasts.