Noise in front end 2002 zr2 blazer

Hit in the rear axle may have damaged bearings or brake parts. Jack up the side you hear noise from, put on stand, then have helper rotate wheel while you look underneath and listen to see where noise is coming from. Use length of old fuel or heater hose, one end in ear, to locate exactly where noise comes from.

By removing the drive line you may move the car but it will lock up on you at some point,, the rear end, wheel bearing or broken axel will cause more damage, just tear into it and fix the problem before it causes you more trouble.....Hope that helps...

Problems with cv joints can cause this noise when turning, stopping. Eventually the joint just gives way and you go no where!

does it get louder above 45-60mph? and much quieter at low speeds. It could be wheel bearings, a rear differential or front differential. If its a grinding humming noise its wheel bearings, listenin to see if theyre coming from the front or rear, left or right, or both when your driving to know what wheel bearing are bad. If its a whinning noise, its probably a differential. check and listen to hear if its coming from the front or rear. Also, check for loose plastic around the wheels. Lastly check your tires for uneven or choppy wear. move your hands front to back on the top of the tire. does it feel really choppy and rough, maybe you just need new tires

could be a stone stuck in one of the calipers , sometimes driving in reverse can clear the stone.

bad wheel bearings, is it from both sides or just one wheel??

Check the drive shaf

It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn.
good luck

Check your tire balance and right front wheel bearing

mine did the samething you have check if there is any transmission fluid in your transfer case. because i didn't and i put more in and the grinding went away.