Bought my 2023 Nissan Titan Pro-4x from dealership May of 2023. Never been involved in a collision. So there should be no reason it feels as if something is loose on the underside. There have been similar reports of this vibration/shaking such as this one: aœNissan Titan Pro-4X 4WD was bought new from dealership. Have had issues with the truck downshifting hard when slowing down since purchase. The truck lurches forward under 5MPH – 10MPH and feels like you are being rearended by another vehicle. Identical issue to NHTSA complaints 11578467 and 11539769.a I have also had it happen once so far. I have been driving no more than maybe 10MPH and it recognized something in front of the sensor and the truck slammed on the brakes to a stop. Mind you I was in an empty parking lot. On long drives, my forward collision sensor will randomly illuminate for no reason. It was do it in all season but more frequently in the winter. I used to own a 2017 Nissan Titan SV. Never once had an issue. Iam not sure whatas going on with Nissans quality control but this is insane. I would honestly like some sort of remedy before I have no other choice than to trade the truck in..