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Old 10-16-2019, 02:56 AM   #3
BruceK
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Join Date: Oct 2011
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"Rattling sound" could be a failing damper. The "banshee high pitch metallic hum" is way harder to guess, but the chance of 2 different transmission faults at one time isn`t great.
A banshee (/ˈbænʃiː/ BAN-shee; Modern Irish bean sí, baintsí, from Old Irish: ben síde, baintsíde, pronounced [bʲen ˈʃiːðʲe, banˈtiːðe], "woman of the fairy mound" or "fairy woman") is a female spirit in Irish mythology who heralds the death of a family member, usually by wailing, shrieking, or keening.
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BruceK
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