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  1. 01-04.5 LB7 Duramax Powertrain
    This is my first diesel and I've only had it since the beginning of August, so I don't know if this is a real problem or just my imagination. The truck: I have a 2003 Chevy Silverado 2500HD, 6.6L LB7, 4x4, Crew Cab. Everything is completely stock and no tunes have been made to the best of my...