2023 Chevrolet Trailblazer brakes problems

I was driving west on I90 near Belvidere IL, through a construction zone. All of sudden the vehicle stopped by its self. I had no control except for the steering. Once on the left shoulder of a four lane hwy(one way), another four lanes on the other side. There was a cement barrier blocking from the other side traffic. I smelled like burnt rubber, now I now it was the brakes. I checked under the hood did not see or smell something burning. After a few minutes the SUV was able to move.

The contact owns a 2023 Chevrolet Trailblazer. The contact stated that while his wife was driving at an undisclosed speed, the brake pedal felt extremely firm and was difficult to depress. The contact stated that his wife needed to anticipate the stopping distance to apply enough force to the brake pedal while stopping the vehicle. The vehicle was taken to the dealer on several occasions, but the technicians continuously stated that there was no failure with the vehicle.