What's that noise?

Hmmmm.....for almost a year now, I have been complaining about a noise that my truck as been making, like a very loud humming, so many people thought it was my big tires! So Greg took the truck for two days...and no kidding while he was pulling into his parking lot at his shop, the rear end went out! Ok, like THANK YOU GOD, I drive 70 mph for 20 Minutes 3 days a week to go to school...That would of added some more gray hairs for me, thats for sure! SO GREG, the carpenter, the taxidermist...replaced the rear end! Whew...I'm rolling again..quietly!