Ok so here is my issue. Been doing alot of research on it cant pin point one problem. Got a hum coming from the front driverside of my tahoe 4x4. When its in 2x4 its loud when in 4x4 gets louder. Tryed wheel hub not that. When slowing down on the brakes to a stop I feel the truck wobble a little and when its really quiet and rolling a few mph I here a clicking sound almost from front driverside. Could this possibly be the cv axle? Im hoping its not a diff.