Yes Sir, they are defroster fans and they are also the first things to loosen up and start rattling while driving down the road. Get rid of the self tapping screws and "Blot" them down (or up), Don't rattle any more!
Doug & Darlene Morgan RVM96 & Abby Gabby(pooch)
04 Dolphin 6375 LX W-24 Chassis #434136
"The Journey is our Destination"Hickory,NC