Noticed some leaks seem coming from driver side axle seal. Well... replacing the seal should not be that bad, what I am wondering is would it be other problem. Searching the forums found it could be the differential problem, ie, a new tranny needed. Mine is a 04 with 80K miles, tranny shifts fine, drive fine with no code. Brought it new in 04 with optional factory tranny cooler at week 1. Any thoughts?