Highway humming
I have an 07 xlt lariat. Has anyone heard of a high pitch humming noise while cruising
around 70-75 mph on the highway? It sounds like it's coming from the back or side of the
truck. No, it's not a door or window cracked open and o ly happens on the highway at that
speed. If I accelerate to 80mph then the sound almost goes away. Any help or ideas to what
this may be???