I notice a humming noise when driving my 2001 frontier throughout the day. I parked and listened and seems to be coming from the back of the truck under the bed. I have video but can't upload it onto the site. Has anyone came across same humming sound?
I'm not sure this would work (it did on my 03 Mustang) when the fuel pump was going bad, i could hear it making noise, when I turned the key on but did not start. It would hum, and it's not supposed to.