Thanks! Very much thats the case. Seems a lot of work to get access to? // I'm going to try a vacuum from outside the grille firstThe “grille” in the trim is the air intake for the rear HVAC. Does the sound stop when the rear blower fan is turned off? Years ago I had a leaf make its way into the rear fan, causing an imbalance and made similar noise. Removed leaf and all good again.
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