And just one other thing.
I had the motors replaced on my '99 Ody. One is still silent , but the other one squeals again.
Some time after the replacement, it sounded like my rear A/C fan was loose and rattling. It persisted so much that I figured how to remove the cover panel ( the one the Honda Tech used to gain access to my vent motors) I found a sheet of thin vinyl plastic behind my A/C blower had become loose and was flapping in the breeze back there. Completely inaccessible unless you want to try to figure out how to remove the blower. I fiddled with it three times till I finally squeezed my hand back there and punctured the plastic and made an "escape" vent for the air creating the noise. That fixed it. Of course I don't know what surprise awaits me down the road.
Just a word to the wise.