2009 Ford F-350 Super Duty Q&A

2009 Ford F-350 Super Duty Question: I have a loud cabin buzzing at high speeds what could this be?

It sounds like it is coming from the driver or passenger door or window area. It only happens at wind speeds greater that 70 MPH, ie 55 MPH vehicle speed with a 20 MPH head wind. It goes away when we get behind a semi. It was intermittent at 20K mile but appears to be constant at high speeds now (29K miles). -
Answer 1
POSS DOOR WINDOW SEAL IS TWISTED OR CRACKED.INSP FOR DEFECTS -