Whistle Sound
I have a 2011 Impala LT, Recently I've noticed a whistle sound that comes and goes from the engine area its not very loud I can hear it on the inside but when I put my window down i cannot hear it, I seem to hear it when i'm at a stop light and other times I do not hear it at all. I have ran the defrosters for the last few days with the fan turned on mid way and the temps here have been in the 20s for highs, Has anyone ran across this? I've checked all the fluid levels and they are fine.
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