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    Coolant leak!!'

    Is it an O-ring I can pick up at a napa or is it a dealer only O-ring?
  2. F

    Coolant leak!!'

    Coolant leak!! HELP Hey guys. I drive a 2005 6.6 liter duramax lly. I had a coolant leak months back and traced it back to the water pump. Water pump and thermostat have been replaced. Everything was fine and dandy, no leaks!! A couple months later the leak was back. Replacing the water pump...