I have a 2003 F-150 FX4. I had my tires rotated and a kind of grinding/ humming (kind of like a truck with gumbo mudders) started in the front end. I had read on the Internet that maybe I needed to switch the 4wd on/off. I did that and still have a hum. What can be my problem be?
Wednesday, January 2nd, 2013 AT 5:31 PM