ok, ever sense i bought my truck i have had a constant humming noise while driving. if i were to take a left turn the noise would get louder, and taking right turns it would go away and come right back when pulling straight again. so i figured that it was my pass side wheel bearing. i changed i and noise was still there. so i went ahead and bought another to do the driver side. i changed it yesterday and now i have the same noise but not as loud, and its like a pulse not a constant noise. any ideas? it is driving me insane!!!