I hope this is the right place to ask this question.
I own a 2006 Chevy Impala. About 6 months ago, I heard a loud knocking from the dashboard whenever any blowers were on. The mechanic did not inspect it but suggested something may have gotten into the vents. Some forums suggested that this was a faulty actuator. It went away on its own within 2 weeks.
The knocking also came with a problem - the AC turns on by itself whenever I turn the fan on and select inside air. There is no way to turn it off without turning off the fan. If I choose outside air, it comes in too hot. So I've been driving around uncomfortably for quite a while. Can anyone diagnose what is going on?
Thanks in advance!
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