GM says some 3.0L LZ0 Duramax trucks showing 419°F fuel temperature readings and multiple DTCs may actually have a faulty MAP/IAT sensor. Here’s what bulletin PIP6119 says and how to access the sensor. The video naturally supports this article because it already covers MAP sensor access and removal. https://youtu.be/f2uBXmtPPpw
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 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 bulletin PIT5689M addresses no-restart after Auto Stop, intermittent no-crank, dead battery, glow plug faults, transfer case errors, and multiple warning lights on Silverado and Sierra trucks. The root cause is often a loose or damaged engine-to-body ground at the passenger-side firewall (G132/G134). Inspecting and securing this ground can prevent widespread electrical faults and unnecessary parts replacement.
P2C7A on the 3.0 Duramax means the SCR/NOx catalyst isn’t meeting efficiency. Learn the real causes, exact diagnostics, and fixes for LM2/LZ0.
If you’re a 3.0 Duramax Diesel owner, you’ve likely heard of the P04FB code—it’s one of the most common diagnostic trouble codes (DTCs)...
