Warnings problems of the 2025 GMC Acadia

I have the little feature that will brake for me if it thinks ima get in a wreck. However it’s glitchy!! I can be the only vehicle on road in both directions, cruise set at 60 when out of nowhere the car slams on the breaks. We go down to like 52 then like nothing ever happened we are back to 60. This has happened several times. I have brought the car into my dealership tomorrow have the software updated and the camera recalibrated. Even after these steps were made this issue is still occurring. Happens about one to two times a week, so pretty often. My worries that I will be rear ended one day if this is not corrected.

Bought new 2025 GMC Acadia in March of same year. At ~4500 miles I started getting brake assist, forward collision and electronic stability control warning messages on dash. Upon researching, this is an increasingly common issue with this vehicle that can render the brakes unusable. I no longer feel safe in the vehicle and want it refunded. Car is now in the shop. Taken in on 9/11. Problem has been confirmed by dealer.

Vehicle had a "service esc" and "service brake assist". Dealership said the master cylinder is bad and it is not safe to drive. Now its sitting at the dealership with no eta on parts and no loaner cars.

Multiple brake warning lights came on while driving vehicle.

The esc, abs, and traction control, yellow warning lights, brake, red warning light. Diagnosis is abs, module, and master brake cylinder bad 2025 GMC Acadia denali, 1150 miles. No parts available because these are all needing work! people are having near misses and collisions due to this problem! put a stop production order until these are fixed!.