2021 GMC ACADIA Forward Collision Avoidance Automatic Emergency Braking Problems

Instrument cluster malfunction. Entire instrument cluster blacking out every 60 seconds, then rebooting nonstop while driving. While this was occurring, none of the advanced driver assistance systems functioned, nor did the speedometer or other gauges. This occurred while on a trip, and meant having to travel a long distance without having emergency braking, collision warnings or the ability to monitor speed. The car was taken to local dealer and they replaced the entire instrument cluster.

My vehicle stops working while in traffic when the auto stop is engaged. The abs, parking brake, and dash flashes prior to the engine stopping. I have been to the dealership multiple times and they are never able to recreate the issue. The check engine light codes produced are P0014 and c0800-03.

While driving down a busy road automatic braking engaged for no reason causing the Acadia to abruptly come to a dead stop in the middle of the road with nothing in front of me. Red collision lights came on at the same time as braking with no prior warnings. Could not get the car to move for a few minutes (when giving gas there were grinding sounds) then the braking system let up. Drove for another few minutes and it did it again. Called GM and WE had to figure out how to get the car to the dealership with a major safety issue. Took the car in and it was throwing B390F, U0184, B395A codes. When we received the vehicle back one of the codes was for a bad back up camera so the new rear back up camera view is so stretched you can’t use it to back...

While driving through intersection auto braking system activated for no apparent reason . Could have caused a crash due to sudden unexpected braking. No warning lights or alarm noted during or after event. Dealership was unable to find any problems with the automatic braking system.

Was on the interstate driving when the emergency brake engaged causing the car skid the tires and almost completely coming to a stop in heavy traffic. Shortly after this the transmission had issues which caused the car to be undrivable and had to be towed. The dealership had the car for over a month and replaced the TCM. There were no other warnings prior to this.