Recently I moved from North to Texas, I noticed that my 2000 Pathfinder SE makes humming sound when I step on the gas pedal lightly at around 45mph, but when it goes above 50 mph, the sound is gone. The sound is not very loud but noticable. The truck has been extremely quite in Canada and I never had any problems. I remember there was similiar noise before, but it seems it got louder recently. Is this normal? Am I being paranoid here? did anybody ever experience similiar problem? The truck has got 35000 miles on it, so if it is a problem, I want it repaired before the warranty expires
Thanks,