My climate control has a high pitched cyclical whine but usually only when the passenger side has air directed at the feet. When on defrost it's normal, and on the driver side it doesn't whine if I select feet as well. I originally though it was a blower motor but if there is only one blower motor, and it's well behaved on defrost, what should I be looking at to diagnose the high pitched whine? Thanks.
- posted
20 years ago