Kyon,So is this a destructive type of issue? What I mean is if I just wait a few seconds after I shift into reverse for the fluid to make its way through the passages correctly is that good enough or is there going to be damage if the updates aren't installed?
Good question. AFAIK, there have been no significant number of reports of any transmission damage or failures on the 80-Series A343F trannies; '97, '96, or '95. We don't know how many had the repairs in those TSBs done under the original vehicle warranty.
I have a '97 and I have had (2 occasions) the noise in reverse. Stop, pull it out of reverse, back into reverse, and all is well. Kinda scary though.
As for the poster saying he puts the transfer case in N to "fix" the problem... well, that has nothing to do with it. The issue is in the transmission, not the transfer.