I'm trying to figure out if my issue is isolated or a common problem among my tranny type. I get a hella frickin' irritating humming sound based on the speed I'm going, and it continues to keep getting louder. Debating on either getting a new car when I graduate or getting the tranny rebuilt. Infiniti service manager said it's the final drive gear based on my symptoms. So anybody else have this problem, or did I just get one of those trannies put into my car?