空調一開大風就抖,老鼠鑽到風箱裏,,看圖說話.

02 Chev Traiblazer LS, the driver can feel dashboard shaking and big noise when the A/C blower turns on at high speed. there are 5 different speeds and the 5th speed doesn't work. No any wiring information is available because the shop I am working for is dying. I was told by one of my friends that he often sees my boss at DWI class because my friend was caught by a cop second time for drunk driving and he have to attend the class. with my experience I believe the blower speed control module and blower motor are the culprit. I order a new module and clean the motor vane cage, reassemble them and the shaking is gone and 5th speed works.