Emission Control problems of the 2012 Jeep Grand Cherokee

My Grand Cherokee has stalled several dozen times over the past few years and the dealer can't fix it. The car stalls when slowing to a stop or turning through an intersection but we can't duplicate the problem at the service center. The dealer kept the car for nearly a month trying to duplicate the problem but could not, but I have kept records over the past year of all stalls and the conditions and the only condition that remains constant is that I am quickly braking from 40 mph or faster or I am braking while turning. Initially it only occurred while turning left, but now it occurs while turning right and while braking quickly while going straight. I have been in several near misses due to losing power steering and brakes and I am to the point to where I can't allow anyone but me to drive the car due to the safety factor. Twice I almost hit a car while turning and once a big rig almost hit me in the side as the car stalled mid-intersection of a six lane highway. The car is still under Chrysler's warranty, and as noted, the dealer has tried to fix the problem, but has failed time after time. The problem has occurred dozens of times but the latest time was today, at which point I decided to submit this complaint. Although I can't duplicate the problem on demand, there are 3locations where it most often occurs, and it most often occurs in the morning. The first location is about 2. 5 miles from my house, and the other two are 5 miles each from my house. Two of the three locations are at intersections with red lights, while the third is simply the location of where I work where it has stalled multiple times while just turning into the driveway. It also has stalled several times while coming home or just driving around or on vacation. Dealer has replaced fuel pump relay, wiring, and some emission control parts.