2025 Gmc Duramax 2025 Diesel Engine. The '23 chevy silverado and gmc sierra offer the new 3.0l i6 lz0 turbodiesel duramax engine, replacing the 3.0l i6 lm2. Refreshed for 2025, the restyled sierra 2500hd offers several enhancements tied to towing.
The 2025 gmc yukon will continue to offer the 3.0l i6 lm2 turbodiesel duramax engine, rather than the 3.0l i6 lz0 engine expected originally. Letโs dig down to see what has been done to improve the duramax.