The LZ0 Duramax is GM's second-generation 3.0L inline-six diesel engine, producing 305 horsepower and 495 lb-ft of torque. This complete guide covers specifications, steel pistons, cooling system updates, reliability improvements, and every major difference between the LZ0 and LM2 engines.

Rising synthetic oil prices and global base oil shortages could directly affect 3.0 Duramax owners. From higher DexosD oil costs and tighter supply to potential formulation changes, here’s what LM2 and LZ0 owners need to know — and why modern diesel engines are more dependent on oil quality than ever before.

GM has updated its official oil consumption bulletin for the 3.0L Duramax diesel engine, now adding the newer LZ0 platform alongside the LM2. The bulletin explains what oil consumption is considered normal, how towing affects oil usage, and why proper oil level checking procedures matter for diesel truck owners.

The CSF 3900 Radiator for the 3.0 Duramax diesel claims an upgraded 31mm heavy-duty core compared to the factory 28mm radiator, but does thicker automatically mean better cooling? In this detailed side-by-side comparison, we break down the real differences between the OEM radiator and the CSF replacement, including fin density, coolant capacity, airflow characteristics, tank crimp design, and overall construction quality.

GM has redesigned the 3.0 Duramax (LM2) (LZ0) engine oil pan, introducing a relocated drain plug, revised sump geometry, and a new oil pickup tube. The updated design improves oil drainage during service and refines internal oil control, while maintaining overall capacity. Here’s what changed, why it matters, and what owners need to know about compatibility before ordering parts.

The EPA has rescinded the 2009 Endangerment Finding, but what does that actually mean for diesel owners? Here’s a clear breakdown of how the change affects greenhouse gases, the Clean Air Act, and 3.0 Duramax emissions systems.

GM Bulletin 26-NA-033 explains ECM calibration updates for 2025 LZ0 Duramax SUVs addressing MIL warnings and multiple DTCs caused by software anomalies.

GM has quietly brought back a feature that a lot of truck owners asked for — the Trailer Light Test inside the myChevrolet and myGMC mobile apps. If you tow regularly, this is one of those small updates that actually makes life easier. What Is the Trailer Light Test? The Trailer Light Test allows you to cycle your trailer lights directly from your phone , so you can stand behind the trailer and confirm everything is working — without climbing in and out of the cab. The tes

When news broke that OXE Marine and GM Marine had signed a development agreement to use Duramax engines in a new generation of diesel outboards, most people saw it as a marine story. For 3.0 Duramax owners, it is something else entirely: It’s a strong signal that GM sees the LZ0 3.0L Duramax inline-six as a long-term platform, not a short-lived experiment. In this article, we’ll break down what the agreement actually says, why it matters for truck and SUV owners, and how a

Release: September 2025 • Bulletin: N252508341 • Applies to (LM2 3.0L Duramax):Chevrolet: Silverado 1500 (2021–2022), Suburban...

If you’ve been driving your 3.0 Duramax-equipped truck or SUV, you're likely familiar with the frustration of a Diesel Exhaust Fluid...

The landscape of automotive emissions is constantly evolving, and for Duramax diesel enthusiasts, a significant change is on the horizon....

The time has come, we finally get to see the LZ0 engine make it's way into the 2025 SUV's but unfortunately Cadillac felt the demand was...

A technical service bulletin #22-NA-128 addressing a malfunction indicator lamp (MIL) illumination issue has been updated to now include...

I am happy to inform you there is finally a fix to this stop/start issue. I personally experienced this with my 2023 LZ0 and I mentioned...

In the latest video upload from Demonworks, Greg discusses every single part available for the 3.0 Duramax Diesel. With a full...

Recently I installed the Banks Stealth Pod on my 2024 Silverado ZR2 with the 3.0 Duramax Diesel. Shortly after, I upgraded to the Dual...

After purchasing both fuel filters from Amazon, I decided to cut them open and really see why 1 filter was $20 cheaper than the other. I...

PPE Charge Air COoler Radiator for 3.0 Duramax Diesel Trucks LM2 LZ0

The most talked about, no, the most complained about item on the class leading 3.0 Duramax diesel is the oil pump driven by a wet belt....