Brake Grinding Noise problems of the 2013 Chevrolet Traverse

June 2018 I took my Traverse for regular oil change and was told I needed brakes. Si wasn't experiencing a problem with them but I agreed to have them replaced as they are important part of the driving experience. Approximately 4 weeks after the new brakes were replaced a grinding noise began when I applied the brakes coming to a stop. I had no noises coming from my brakes ever before they were replaced? I took it back to the dealership they couldn't hear anything and brakes were 100%. The grinding noise continued so I took it back and test drove it with the service manager who finally heard it and a brake booster was ordered and brakes were repaired. My Traverse has now been back for this brake problem 3 times. The grinding noise is still there and the last time I took it back was told that there is an alert on this problem but not a recall by gm. The front lower control arm bushings such correct this problem, per bulletin pit5563 at the cost of $700. 00. Since it's not a recall but a problem they are aware of and since it only occurred after my brakes were replaced I have to foot the cost. What's it going to take a few lives to get gm to own up to this known problem?.