2023 Cadillac XT4

Driving on freeway, vehicle in front slowed down and my vehicle detected vehicle in front slowing down only slowed, not stopping), so my vehicle immediately braked to a stop on the freeway. Concern vehicles behind me of rear end collision. Vehicle would not allow me to proceed until until my vehicle was at a complete stop. Very dangerous as this could cause injury or death by other drivers not able to react to sudden stop.

Auto Emergency Braking {AEB} applies itself without any operator input and without cause for the brakes to engage, it can happen at any time at any speed without warning and throws everyone and everything in the vehicle abruptly forward as if you were in a crash, this is a very problematic issue that can make the vehicle at slow speeds to be rear ended because of the abrupt stop and also to be out of control at high speeds and causing severe injuries or death !!!! I am not the only person that has had this issue !!!!

Transmission fails to automatically shift into 9th gear. A GM bulletin #21-NA-181 indicates this is normal for efficiency operation, but the information indicated is false. Experiencing 9th gear is allowed to be shifted when manually over ridden or when shift to manual mode (without shifting to 9th gear), then shift back to auto mode, then transmission shifts to 9th gear automatically after this is performed then shift to 9th gear automatically during that cycle until vehicle is turned off. So condition GM claims in their "operating condition" is false.