Flutter/putter or Helicopter propeller

[GhostGeny]

please help me figure this thing out, my G15 3.8 is at the dealer due to a sound i kept hearing inside the cab of the car around the console area, asked a few members of a Genesis group im in on FB if they'd experience it, some have and some haven't, those that have stated its the drive shaft, I called the dealer back today to see if they found the problem, I was told that the Tech was trying to figure it out he and the engineer hope its not too bad

 

[TinsleyC]

There are many threads on the forum about this problem. Search for "flutter". He's one.

Resolution to flutter at 25-30 mph

 

[TinsleyC]

Here's another

Vibration at 30 mph

 

[TinsleyC]

One more -

flutter @ 25-30mph

 

[Hueydriver]

And helicopters don’t have propellers! They are callEd rotors! Sorry, had to throw that one in. LOL