NHTSA Complaint #11690440 — 2024 HYUNDAI PALISADE

I am unsure what exact component malfunctioned but in 5 separate times within the past 2 months, the vehicle has failed to stop at a normal time when pressing the brakes and a loud rumbling occurs. It feels as if I am sliding on ice.Two of the times it occurred on uneven road surfaces, however 3 times I could not identify an issue with the road. They all occured when coming to a stoplight/stop sign or when I had to stop due to a vehicle slowing down or stopping in front of me. In each occurrence I was going under 20 mph. The safety of others could have definitely been impacted as it took a few seconds to actually stop the vehicle more than it should have. Someone could have been walking and crossing the street in front of me. Or if I was too close to the car in front of me it could have hit it. No warning messages appeared on the dashboard prior, but during the occurrence in the last time, I noticed the word "shift" appear. This word could have shown up during the first few times and I could have missed it. On Tuesday September 9th I took it to the dealership and they checked everything out and the vehicle did not produce the same symptoms when they tested it out over the hour I was there. They said they reported the issue but they did not know the reason it was occuring.