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  1. 01-04.5 LB7 Duramax Powertrain
    hey everyone hope someone can help me out here, so I have an 02 lb7 with 515,000km on it, and I get excessive smoke when I’m idling once truck is up to temp when it’s cold no smoke at all except on start up black or white smoke. it’s not losing coolant levels stay the same, oil is always at the...
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