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Fresh Off The Press
GM Extends 3.0 Duramax Coolant Control Valve Bulletin to 2027 Models
GM has updated its 3.0 Duramax coolant control valve failure bulletin to include 2027 models. We examine the LM2 and LZ0 part-number history, second-generation replacement valve, ECM programming requirements, and common failure patterns.
PPE Introduces Larger 5-Micron Oil Filter for 3.0L Duramax Engines
PPE has introduced a larger 5-micron MicroPure XR oil filter for the 3.0L Duramax. The new design features 295 square inches of filtration media and joins the existing 10-micron filter. Our first installation also revealed an important oil pan clearance consideration.
GM Confirms Larger DEF Tank and New Mechanical Details for 2027 Silverado and Sierra
GM's latest 2027 Silverado and Sierra service bulletin confirms an approximately two-gallon increase in Duramax DEF capacity, a 34-gallon optional fuel tank, and additional mechanical changes across the next-generation truck lineup.
6.6L Duramax Diesel Engine
Edge Introduces CTS4 With 3.4 Times the Processing Power and a Larger Display
Edge Products has introduced the new CTS4 monitor with a larger 5.5-inch touchscreen, 3.4 times the processing power, faster startup times and improved gauge responsiveness. Here's what's changed and what Duramax owners should know.
Smelling Exhaust in Your 2025–2026 Duramax? GM Has a Bulletin for That
GM has updated a service bulletin covering exhaust odors inside 2025–2026 Silverado and Sierra HD trucks equipped with the L5P Duramax. A leaking EGR cooler bypass valve shaft seal may be responsible, and technicians may also encounter DTC P2463.
2027 Chevy Silverado HD Order Guide Is Out: L6P Duramax and L8S Gas Engine Changes Confirmed
The Big Change: L5P Becomes L6P / The Gas Engine Changes Too: L8T Becomes L8S
3.0L Duramax Diesel Engine
GM Extends 3.0 Duramax Coolant Control Valve Bulletin to 2027 Models
GM has updated its 3.0 Duramax coolant control valve failure bulletin to include 2027 models. We examine the LM2 and LZ0 part-number history, second-generation replacement valve, ECM programming requirements, and common failure patterns.
PPE Introduces Larger 5-Micron Oil Filter for 3.0L Duramax Engines
PPE has introduced a larger 5-micron MicroPure XR oil filter for the 3.0L Duramax. The new design features 295 square inches of filtration media and joins the existing 10-micron filter. Our first installation also revealed an important oil pan clearance consideration.
GM Confirms Larger DEF Tank and New Mechanical Details for 2027 Silverado and Sierra
GM's latest 2027 Silverado and Sierra service bulletin confirms an approximately two-gallon increase in Duramax DEF capacity, a 34-gallon optional fuel tank, and additional mechanical changes across the next-generation truck lineup.
Other Diesel News
GM Google Gemini Update Now Available: How to Upgrade Your Duramax Truck’s Assistant (Step-by-Step Guide)
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.
LEGAL TO DELETE? NO. But, EPA Rescinds the 2009 Endangerment Finding: What It Actually Means for 3.0 Duramax Owners
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.
RECALL - Automatic Exterior Lights May Not Activate As Required
NOTE- Canadian Trucks Only N232431050-10: CMVSS Noncompliance Recall - Automatic Exterior Lights May Not Activate As Required - (Mar 26,...
Buyers Market -
GM Extends 3.0 Duramax Coolant Control Valve Bulletin to 2027 Models
GM has updated its 3.0 Duramax coolant control valve failure bulletin to include 2027 models. We examine the LM2 and LZ0 part-number history, second-generation replacement valve, ECM programming requirements, and common failure patterns.
PPE Introduces Larger 5-Micron Oil Filter for 3.0L Duramax Engines
PPE has introduced a larger 5-micron MicroPure XR oil filter for the 3.0L Duramax. The new design features 295 square inches of filtration media and joins the existing 10-micron filter. Our first installation also revealed an important oil pan clearance consideration.
GM Confirms Larger DEF Tank and New Mechanical Details for 2027 Silverado and Sierra
GM's latest 2027 Silverado and Sierra service bulletin confirms an approximately two-gallon increase in Duramax DEF capacity, a 34-gallon optional fuel tank, and additional mechanical changes across the next-generation truck lineup.
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