Hello;
Yes, I have the same issue with my 2018 Buick Regal TourX.
I got the car with 6 miles on it and it started to do that noise at about 60 miles and has continued since.
I did go to the dealer and they told me it’s normal, but it’s not.
Mine only turns on when the car goes into Auto-Stop mode and I have the heat on.
If the AC is on then it doesn’t seem to turn on, although it does sometimes happen when you accelerate harder.
Dealer told me that it’s a normal sound that the heat exchange pump makes when the vehicle goes into Auto-Stop mode.
The noise it makes during that is much quieter then the noise I’m talking about. I even recorded a video of it and the dealer laughed it off like its supposed to make that sound. So I recorded a video of normal operation vs this fluttering/tapping sound.
GM states in their release that it’s normal, I think they’re going to have a recall on that pump/fan.
Do you have the manual climate system or the automatic one?
Thanks.
