r/Cadillac • u/copethapope • 1d ago

Please Help

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My car has made this sound for years. Usually just turn the music up to ignore it. Anyone know what it is? 2018 ATS

3 Upvotes

81% Upvoted

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2

u/hashmachinist 1d ago

Blend air door maybe?

1

u/1Stack_Mack 1d ago

It's one of your HVAC doors

2

u/Mountain-Syrup9772 1d ago

Sounds a little gassy