GM has released OTA update 661.51 for Silverado and Sierra trucks. The Y181 software update includes HVAC fixes, TPMS improvements, key detection updates, pedestrian alert changes, improved starting reliability, reduced check engine light activation, turbo diagnostic improvements, and power running board reliability enhancements.
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.
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.
The EPA has rescinded the 2009 Endangerment Finding, but what does that actually mean for diesel owners?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
