[T77911S]

I think mine does it too.

when I start my car I hear a whine or squeal. if I turn the heater up to hi then back off if stops.
its like the fan is on low when off and is making noise, but turning the fan to hi makes it stop, then it goes back to running on low but it is now quiet.

I have the car off the road and on stands to do my yearly work on it. (putting AC back in and fixing an oil leak) but now I am going to take the heater controls apart to check them out.

need to finish some work on the house too. pouring concrete Friday, building a deck and going to put railroad ties down to line part of my driveway and put down coquina (?) rock. also need to paint, I want to take my old 2 storke mower apart to see why it lost compression. (think neighbor put regular gas in it).