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  1. 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...
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