Brake Light On problems of the 2017 Chevrolet Suburban

I was driving with my son as a passenger. I pulled up to a red light at very low speed from a high school parking lot. It was a red light. 1st car making a left. I came to a complete stop before the crosswalk. After being stoppef for over a minute,I began to release the brake pedal. As I released the brake slightly the brake pedal got very stiff and the car started to shake. No emergency stop/lights/seat vibrate or abs systems were activated. As the car crept past the crosswalk with the brake being depressed fully, shaking violently. The vehicle ended up 5-8 feet further than when I had stopped prior. I never released the brake enough to even move. After the car stopped shaking my son had looked at me and very scared asked if it was an earthquake. I said no the car had not stopped. He said to me wow that was the same feeling from when our vehicles brakes failed once before and plowed into the vehicle in front of us while my wife was driving. My son was there for both incidents but my wife and I were separate drives for both instances. I then tested the brakes to be operational and continued home. I brought the vehicle to paradise Chevrolet at the first appointment they had available even after I stated it was a safety emergency on a vehicle that had had brake failures in the past. After the first time they replaced the vacuum pump due to failure causing a traffic collision with injuries. Chevrolet inspected the vehicle only to find that this time the vacuum pump was within parameters and brakes work sufficiently after the vacuum update from a year ago. I am now driving the same vehicle based on the inspection from local Chevrolet dealer. I do not feel safe in this vehicle after the vacuum pump being replaced 2 times due to failure and a third time with a failure and no proper replacement. My family is in danger and so are other drivers on the road.

Brake pedal became very hard to press and wouldnt stop the vehicle, nearly causing an accident. The service brake assist light came on. I had the code pulled by a local garage. The code said the brake vacuum pump had failed. Vehicle on has 60000 miles.