2021 Lincoln Aviator Steering Problems

Hello. My name is [XXX] and I have a potentially serious issue with my car and Lincoln refuses to look into it. The short story : When you press the brakes moderately or harder (as if stopping for a yellow light) it sounds like you’ve run over a brick or hit a BIG pothole. It has been in 6 times and to 3 dealerships and they all say it is normal for Aviators and Explorers. I have owned an auto repair shop for 12 years and my guys fix 2000 cars per year. I am an ASE master certified mechanic and I can assure anyone that there is nothing normal about this bang. They tell me they drive a like vehicle and if it also makes noise, there is nothing they can do. I have reached out to Lincoln Concierge multiple times and they tell me they will do nothing if a like vehicle also does it. I think of the 2019 Pacifica that the lower ball joint pinch bolts comes out and folds the wheel under the vehicle. I have had 3 service managers drive the car and they have all told me that it sounds really bad and abnormal. I have been told by all of those managers that Lincoln enforces not doing any further diagnostics or repairs if they all do it. I did drive a 2023 Aviator with a service advisor and it did not make the same noise mine does. You can actually feel the noise in the steering wheel. I have pleaded with them to investigate the issue and at least let me speak with a supervisor about it but they refuse. I have asked the dealers to put a set of chassis ears on the suspension to pinpoint the sound and they say Lincoln will not let them. The vehicle has 33k on it and is still under full factory and extended CPO warranty. Can you guys look into this issue before someone gets hurt ? Thanks for reading INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)