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2022 Bolt EUV Premier w/ Sun n Sound
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330 Posts
These shutters only open when it's really hot outside and the AC is running. Think 80F+
Actually they close around 0 (32F)....if you have an EUV it will play you a song (loud resonance in the front end) when the shutters close so you are always aware of what position they are in. Generally in the open position above 0 and no noise. Regardless, I don't think the ice is an issue.
They probably activate at other temps and conditions as well but I just got the EUV in late summer so not much experience there.
 
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12/16 build, 2017, white LT
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11,057 Posts
"One of the observed causes of a climate failure that has been diagnosed is the front air intake flap freezing open, and blasting cold air into the system when driving on the highway, which is preventing the heat pump system ability to work correctly."

 
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