I hear this hum in the front right side of my truck.(4WD) going doen the road. sometimes its very annoyimg,it sounds like the tires are bad,but i replaced the tires and its still there.. anyone out there had this problem its an 05 crew cab Z71..

 

sounds like a hub bearing...sort of an airplane propeller noise?

 

I agree on the bearing..........or possibly could it be because the part doesn't know the words and is just humming along??

 

Thanks Argon,its seems it will not start until i reach a certaib speed,like 55 mph,and higher,but when i decrease the speed it stays.. it does sound like a propeller..thanks

 

Might need to balance youre tires but its probably youre hub bearing.

 

bearing!