Grand jeep Cherokee 02 limited is making and rubbing on something everytime you make a sharp left turn what could it be?

I think you will find that your tire is rubbing the inner plastic splash guard. My Dodge Van does the same thing. Good Luck and Remember.
Change Your Mind, Not Your Oil.
Use the First In Synthetic Motor Oil's.
See My Bio For Information & Contact Details. I agree. In a driveway or parking lot turn the wheels all the way to the left. Put the Jeep in park and cut it off. Feel between the tire and the inner splash guard to see if there is any room. Also look for a "tale-tale" mark where the Jeep was leaning slightly when you turn to the left and pushing the tire up against the splash guard. Look to see if the plastic snaps that hold the guard in place have broken or come a-loose.