That noise, or irritating whistle, is infamous in my ‘08 Hurricane. They call it the Hurricane whistle apparently! It only happens in the rain and seems to be caused by the combination of wind and rain coming through the front grill. At certain highway speeds. I recently purchased a roll of inexpensive black screen material (used to replace a screen on a screen door ). I have t installed it yet, but I intend to use small zip ties and install it on the engine side of the front grill.
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