Brake Abs Warning Light problems of the 2016 GMC Yukon

Recieved a recall notice for my 2016 Yukon xl, due to brake vacuum pump faulty. However mcgrath auto in cedar rapids, IA resolve to this recall was to simply reprogram the electronic brake control module. This was completed 12/19. By 2/20 my brakes were requiring me to push harder and at times sounded like they were skipping and braking felt delayed. I also was hearing a squeak/clicking sound coming from what seems the front of my vehicle engine area. Due to quarantine I was not driving or going places but once our state re-opened I called this dealership to report the brake concern and scheduled appt. A day before appt, while stopped at a red light as I moved forward in a very slow crawl my brakes failed me and I could not stop. I bumped the car in front of me which resulted in damage to both vehicles. I reported this to mcgrath as I was scared immensely about the safety of my vehicle. During the service appt 6/11/20 my car was diagnosed with a faulty brake vacuum pump. The vacuum pump was replaced and I was told I was still within the warranty . However they replace all 4 tires and claimed to recalibrate. On 6/25 while in colorado brake, abs and cal lights lit up, the steering wheel power was gone, trailer brake system illuminate, (never even towed a trailer) called mcgrath from colorado as I couldnt drive my car, I explained what was happening, their resolve was to google GMC dealership in area for me. I found my own in Cadillac/GMC dealership in boulder. My children and I are without a vehicle while out of state. Dealership in boulder diagnosed my vehicle with faulty electronic brake control module. I am furious as they say it will not be covered through warranty. My 2016 Yukon is in impeccable condition, issues all happened upon recall with only 35,000 miles. My experience is exactly what is being reported by others impacted by this recall.