Sort of. Haha. Motorville Nissan said they couldn't isolate the vibrating and said it if gets worse, to bring it back. ($210 for this). Since it seemed to go away the first time the seal was replaced, and then came back when seal was leaking again, then worse after seal replaced 2nd time, I personally am leaning towards the CV axle itself (only thing touched when seal was replaced, that had an affect on the shaking/shuttering). But could a bad or worn CV axle cause vibrating bad enough to shake the passengers seat and felt LIGHTLY through the whole car?