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dpf egr cooler head gasket

  1. 11-16 LML Performance Parts Discussion
    Needing some insight on 2013 lml bone stock not deleted. Here's what i have going on: When idling for a while (hooking up camper) or towing camper at 9,000lbs for roughly hour and a half in tow mode exhaust brake "coolant level low add coolant" comes on. Level seems right at about sensor level...