Hi,
It sounds like the A/C may have locked up. Good Lord, that would scare the heck out of someone. LOL
So, make sure both the A/C and the Defroster are off and see if the sound is still present.
Let me know. Also, let me know if the smoke you saw was coming from the compressor/belt area.
I attached a pic below showing the belt-driven accessories. When that noise starts, pay attention. Also, while it's running inspect the belt-driven pullies to make sure they are turning. I attached a pic below.
Let me know.
Joe
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Monday, January 9th, 2023 AT 3:09 PM