Fleece Allison 1000 Harness Pass Through Connector Seall.
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
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
Transmission leaking by wire harness? This is usually the issue.
With age the seal can degrade and allow fluid to get into the connection. This can cause erratic transmission operation, possible codes, and even force the transmission to go into “limp” mode.
This is an easy to install fix if fluid is present in your connection.