Quieting Lincoln Navigator Buzz

Some 2013-2014 Lincoln Navigator vehicles may exhibit a growl or buzz noise coming from the transmission that occurs when shifting from park to drive or park to reverse, most often after the vehicle has been parked and re-started. Identify the transmission build date on the transmission identification tag.

The date will be in DDMMYY (day, month, year) format. Replace the main control valve body separator plate or main control assembly as required by the transmission build date, as follows:

P/N PART

CL3Z-7Z490-C............Main control valve body separator plate (built between 8-1-2013 – 2-28-2014)

FL3Z-7A100-E............Main control assembly (built between 3-1-2014 to 3-15-2014)

FL3Z-7Z490-E............Main control valve body separator plate (built between 3-16-1024 to 7-14-2014)