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  1. Duramax First Generation: 2001-2004 (LB7)
    My 2001 LB7 truck was sitting in the garage for over two months. I noticed little oil stain on the floor under the seal weep hole. It never leaked before. It wouldn't start because batteries were low. Next day after charging batteries there was big puddle of oil. Started up and drove it for 20...
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