ZZ Diesel Allison 1000 Pass Through Connector Body
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 GM 6.6L Duramax LB7 LLY LBZ LMM LML L5P
A leak from the harness is most likely due to this connector failing. Fluid will get into the connector and cause issues like erratic operation, codes and limp mode.