New 3.0 Duramax 2025. Arriving as a replacement for the 3.0l i6 lm2 turbodiesel duramax engine offered previously, the new lz0 engine is similar to the lm2, but different in a few key areas. It will offer different sound levels and.

The sierra 1500 at4x is the. There is also a new active exhaust system for the 6.2l v8 engine.