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....