I do not have a GV but I am really struggling to understand how the calipers can be rubbing on the wheels???? New pads or old ones the caliper position does not change, only the distance that the cylinder is extended. Sounds more like the calipers were not installed correctly to me. Again, I do not have a GV but each of the mopars that I have worked on have two bolts holding the caliper in place. I would defintely check that BOTH are correctly threaded and the the caliper is not actually pivoting on one of them.
2007 Aspen, 2006 Durango, many Mopars R.I.P.