The 3.0 Duramax maintenance schedule calls for oil changes up to 7,500 miles, fuel filter replacement at 30,000 miles, and transfer case service every 50,000 miles based on GM HD guidance.

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.

I tested 0W-20, 5W-30, and 0W-30 in my 2024 3.0 Duramax and sent every sample for oil analysis. Here’s what the wear data, soot levels, and real-world results showed.

Google Gemini — the smarter, more conversational AI — is now rolling out to 2022+ Duramax trucks and other GM vehicles with Google Built-in. In this guide we break down exactly why you’ll want the upgrade, plus the official step-by-step process from GM Service Bulletin #26-NA-127 to check your Android version, update Maps & Assistant, and activate Gemini in minutes. Ready to ditch the old Google Assistant for a much more capable co-pilot? Full guide and how-to inside.

GM released # 25-NA-185 (updated April 17, 2026), and it clearly outlines both the repair procedure and warranty direction.

They look identical at first glance, but swapping the wrong glow plug on your 3.0 Duramax can lead to serious — even engine-destroying — problems. Discover the key differences between LM2 (73G) and LZ0 (72G) glow plugs, including voltage requirements, control module changes, fragility warnings, proper testing methods, and must-follow installation tips to keep your diesel running strong.

GM has updated Engineering Information bulletin PIE0883A for 2026 3.0L Duramax (3MAX) trucks and SUVs, closing its P2463 investigation and directing technicians to inspect the turbo outlet–to–resonator connection for possible airflow issues behind the check engine light.

The latest GM service bulletin # 26-NA-090 , released on March 12, 2026 , provides key information on calibration releases for the 3.0L Duramax diesel (LZ0) in 2025 pickup trucks. This is an informational bulletin guiding dealers on available ECM (Engine Control Module) software updates to address illuminated Malfunction Indicator Lamp (MIL) concerns. Affected Vehicles Chevrolet Silverado 1500 (2025 MY) with 3.0L Diesel (LZ0), all transmissions GMC Sierra 1500 (2025 MY)

GM has updated two service bulletins addressing a frustrating issue reported by 3.0 Duramax owners: DEF warnings appearing shortly after beginning a towing trip. The documents acknowledge the behavior and introduce a software update intended to correct how the system reports DEF levels on newer Silverado and Sierra trucks.

Owners of the 2023-2024 Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 3.0L LZ0 Duramax turbodiesel engine may experience an annoying buzz, rattle, vibration, or noise coming from the passenger side of the vehicle. This issue typically occurs under light load conditions, such as gentle acceleration, cruising at low throttle, or light engine demand. The noise can mimic an interior trim rattle or dash vibration but is actually external, originating from th

GM's new PIE0905 bulletin targets MIL illumination and DTC P0101 on 2025-2026 LZ0 Duramax models (Silverado 1500, Sierra 1500, Tahoe, Suburban, Yukon). It's an early data-collection step: dealers gather intake leak/test details to help engineers identify root causes before issuing a full TSB fix. U.S. dealers only—contact required before repairs. If your truck shows this code, see a dealer soon.

GM has updated bulletin #25-NA-299, expanding P2C7A diagnostic guidance to cover 2026 3.0L Duramax trucks and SUVs. The revision reinforces a critical point: this code is often caused by exhaust or induction leaks — not failed sensors or catalysts. Special attention should be given to front exhaust connections and the LM2 backpressure valve, with pressure testing and soap solution used to confirm leaks before replacing parts.

GM has released new service information addressing a 3.0 Duramax condition where the engine idles normally but hesitates, loses power, or stalls during acceleration. The cause points to an internal restriction in the charge air cooler hose — a component critical to proper boost and airflow on both LM2 and LZ0 engines.

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.