With the cold weather lately, the auto climate control on my '04 Lariat has been blowing at full speed to get things warm. While it is on full blast, I get a whistle/whine/squeal noise all the time. If I manually turn down the fan two settings, it goes away. I didn't notice it in the summer but summer was a little milder than normal.

Anyone else have this problem or know if there is a TSB/Fix for this.....

Thanks for your help in advance and all have a happy and safe holiday!

 

did you ever resolve this?