Had loud whistle at highway speed on my 2011 Access Cab Tacoma. I climbed up and found a deep channel running across the cab just above the windshield. I stuffed a length of rope in that big channel, full with of the cab, and the loud whistle was gone.
I have lots of air noise at the top rear corners of the cab, sounds like it is above the rear doors.
Anybody have a fix for this one?