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  1. Duramax First Generation: 2001-2004 (LB7)
    03 lb7 196k miles. I’ve owned since 187k. Previous owner said to have done injectors around 100k. Haven't noticed any oil spots on the ground when parked. Looks to be an older leak but not sure. Any help appreciated. Photo is Passenger side.
    2003 lb7 oil leak
  2. Duramax Fifth Generation: 2011-2016 (LML)
    Sure this has been talk about before, but I have an oil leak and I've real lots on the oil pan issues but my leak appears to be above the oil pan from a cap on the rear of the engine. Will be removing inner fender lining tonight to get a better look, but has anybody here have this issue before...
    lml duramax oil leak
  3. Duramax Second Generation: 2004.5-2005 (LLY)
    Hello , I have a 04 duramax and I've noticed today as my truck was just parked at idle , a huge puddle of oil and from the looks of it , looks like it's coming from where the engine meets the transmission I would like to know what can cause this and if this is a easy fix ? Thanks in advance
    oil leak
  4. Duramax First Generation: 2001-2004 (LB7)
    Hello all. I use to be active years ago. I have a 2002 that has been sitting for years. Today I threw in some batteries and pumped the fuel primer and it started up after about 3-5 seconds of cranking. I let it Idle for quite a while while I washed it. OIl pressure was good temperature good...
    oil leak
  5. Duramax Fifth Generation: 2011-2016 (LML)
    My 2016 has 32k on the clock. It is in for an oil change and they told me the rear main seal is leaking. This is the 2nd time. Is it time to unload this dog? Was it a incompetent technician the last time? Are they drying out as I don't drive it that much? I am really getting tired of GM...
    engine lml oil leak rear main seal
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