Hi All, I have a 1995 fleetwood avalon that is making a terrible noise when the furnace fan kicks on. I've attached a short video of the sound here: The noise continues for about 60 seconds then the furnace kicks on and its fine for the night. The issue only occurs during initial start up. Outside temperature is a factor also. When I test the furnace at home when outside temp is 65 + degrees the squealing from the furnace does not occur. When were camping in 35 degree weather the screeching occurs. I've tried both A/C power and battery. I'm thinking the motor may need to be replaced. Anyone agree or have other thoughts? Has anyone here had any luck replacing the motor on a 7900 II furnace? Did you have to remove the furnace from the trailer?