That may not fix the problem totally. Mine made that cluncking noise on reverse with a right turn (out of my driveway only). I bought it a few months ago.
Got the driver side CV axle replaced and I still feel/hear it, although not as bad now. It may be the wheel bearing or even the passenger side CV, which I don't know if it's ever been replaced, although the boot looks relatively new.
It bugs me but not so badly that I'm gonna take it in again.
2000 Jeep WJ Grand Cherokee Limited, Black/Black, 4.7L