Noise in front end started around 1000 miles ago, initially i thought it was tire/road noise. Since then I've done one wheel bearing (it had play on the wheel) no change in noise. I was beginning to tune it out until it made a loud pop and a clunk in the front end. The noise goes away when in the air running so i couldn't pinpoint the noise on my lift. Both wheel bearings seem and feel solid, i checked my diff fluid and it had a little sparkle in it and i ended up changing it. The noise doesn't change with swerving or turning, it increases volume with speed.