So this is how I fixed my loud A/C unit in my Isuzu Rodeo Sport in under 30 minutes. The unit I removed and cleaned is called the blower motor and is very say to access with just a Phillips screw driver. this can work for other vehicles too. Sorry I didn’t record the before sound as I was eager to fix it. Hope this helps!
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Same noise from our winter driven 01 Honda 4WD Passport. Thanks for the tip of how easy the fan is to remove. Videos like yours are why YouTube needs to be archived forever, for the benefit of humanity in the future, when encountering ended U.S. brands like the Isuzu passenger car division. Nice work!