While I haven’t gone down this particular road, I do suggest you check your refrigerant. I can confirm that my 2006 with 42k miles was low (probably from the factory like I read is common on this forum). My AC has made much less growl ever since. It cools better on a hot day too, but some minor “growl or vibration” noise still exists. Thanks for sharing the TSB. I’m also interested to hear what other members have to say.