I have a squealing Suburban furnace fan motor too.
Stops after about a minute or so, then fine the rest of the day.
Just a matter of time before it makes for a rough nights sleep.
It's on the to do list...
Anyone have a good source for a new fan motor?
Truthfully I haven't even tried to source one yet.
2000 Alpine 36 FDS #74058
04 Jeep Wrangler TJ
"On the road to find out..."