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A/C Vents Whistling sound

2137 Views 0 Replies 1 Participant Last post by  mrguez2010
Hello everyone:
I own a rebuilt 2015 SLE Terrain and when driving over 50-55 m/h you can hear a Whistling sound coming out from the central dash A/C vents, I've tried all control buttons on the dash and the sound does not change. It's there even with the AC/C off. Any Idea???
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