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Old 02-27-2017, 06:11 PM   #7
Sub

 
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Drives: 2017 ZL1
Join Date: Oct 2016
Location: Ny
Posts: 859
I just noticed this issue for the first time. My heater never seems to blow on high, but I had windows open and full fan on.. flap flap flap flap.. sounds like the plastic or rubber flapper that diverts air up/down etc is being blown around forcefully. If I back the fan off a bit it goes away.

So, no fix? I'm sure its going to be a pita dash removal fix! Not looking forward to that.
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