I had an incident with an extremely weak reverse a couple months ago. after that i had problems here and there when in reverse with it seeming "weak", or shaking just slightly. I haven't had problems with the tranny otherwise, except once my mechanic said maybe just maybe there was a slip in the 2/3 shift. Sometimes i think i hear a howl when the TC isn't locked up and i let my foot off the pedal - i'm worried it's the TC or tranny.
I'm still under warranty so i took it to the dealership and they said they dropped the pan and found loose bolts on the separator plate. they are replacing the gaskets in the area of the plate. I think they said there were three bolts total.
they also said the fluid was clean, not burnt, no shavings or indication of any other problem at all. they put electronic "ears" on it for a test drive and didn't hear anything strange from the tranny but maybe the howl is coming from the rear end...
this repair is covered under warranty and extends the warranty for that particular issue for 12 months/12,000 miles.
I asked the dealership how they can be sure this didn't effect the transmission in other ways that will come up after my warranty expires in a few months - they said they found no other indications of any other issues at all.
i'm pleased they found an actual issue, and it sounds legitimate i guess. but what do you smart guys think about it? should i be happy or pushing harder for more analysis? I chose this dealership because local diesel shops recommended it the most as reputable. i had to go to the dealer due to warranty issues. can the separator plate be loose and cause these problems? i don't even know what the heck it does.
how does a rear-end make a low howl sound sometimes when the TC isn't locked?