BRAKES FAILED IN A DRIVE THROUGH LINE. SAME ISSUE AS THE RECALL. SUBURBAN HAD THE CORRECTED SOFTWARE UPDATE AND YET IT HAPPENED AGAIN. THIS TIME IT LEAD TO A CRASH REAR ENDING A VEHICLE. NOT ABLE TO GET THE VEHICLE TO STOP IS A SERIOUS SAFETY ISSUE. GM HAS KNOW ABOUT THIS AND THE FIX DIDNÂT WORK. THIS IS NEGLIGENCE ON THEIR PART.