I get a weird sound, like wind or cross wind, when I get up to 65+ mph. It is not steady like a constant wind, it is swoosh, shissh, back and forth. It seems to come from the dashboard like behind the radio. I felt for air at the defroster vent but nothing there. I don't feel air swishing around in the cabin.
I thought transmission sound so I put the transfer case in N and the trans in 5th and took it to 2000-2500 RPM and could not duplicate it.
Is this really just air over the cowel vent or am I missing some other indicator?