2025 Chevrolet Traverse

Brake assistance failure. Brakes failed! ESC SERVICE I was able to set it up for inspection Could of caused a accident hurting other people or hurting my family, I use this vehicle to transport my 2 babies Vehicle would not brake properly could have cause serious injuries For my vehicle not yet has not been inspected it was towed, from what I have heard from current Traverse owners they have experienced this same issue with even lower milage No warning lights no indications of failure just happend instant twice

Vehicle leaked a large amount of transmission fluid because it had loose pump bolts per a GM/Chevy bulletin. The vehicle has shifting problems and vibration issues. The vehicle has done in multiple instances phantom braking. It has happened while parking and while exiting praking spaces and once on the Florida state road 924. Driver was able to maintain control of the wheel and avoid a collision.

On July 16, 2025, with 4,514 miles on the odometer, the dashboard displayed warning messages for “Service ECS” and “Service Brake Assist,” along with illuminated indicators for BRAKE, ABS, and Traction Control. At 4,598 miles, the master cylinder was replaced. However, after installing a new brake master cylinder, power brake booster, and Electronic Brake Control Module, the brakes failed. As a result, an independent certified dealer had to reinstall all components to address the issue.

We drove the car to the store and everything was fine we went in to shop. We came back out and I turned the car on and my dash board had lights on. My brake light will not turn off . My ABS light is on. My forward collision light is on .. I am getting a notice to service ESC, and a separate one saying service brake assist . I ran a onstar diagnostic and it came back everything is good. I have not brought it into the dealership yet for them to look at it I will be calling . I have multiple children and I was so scared my brakes were fulling going to give out on my 20 min drive home. I couldn’t imagine what would have happened we could have hurt someone else on the road and ourselves.

I was driving down the road with my 4 year old son in the back and I went to stop at a stop sign and my car immediately lost brakes, the brakes went down to the floorboard with almost little to no stopping of my car. Then I had 3 warnings on my dashboard I can send pictures of them, my check engine light came on, my abs light came on and my traction control light came on. Very scary and something needs to be done about this

While driving our 2025 Chevrolet Traverse with 9450 miles at 45 MPH, it suddenly came to a complete stop and would not advance. Eventually after restarting the vehicle it would drive again, but the ABS, collision avoidance, traction control, and emergency braking was disabled. We learned that the "master brake cylinder" failed. This requires a repair and the parts are backordered. Furthermore we learned this is a known common issue and there is a service warning for the 2024 Traverse and there is now a class action lawsuit. It apparently is also common on the 2025 traverse. This is a potentially dangerous situation that apparently is common and should prompt an immediate recall and replacement with a new and redesigned part. There are numerous reports of similar incidents and per the dealer this is a common repair.

The 2025 Chevy Traverse was purchased on 10/27/25 - new. On the morning of 10/31/25, several lights came on for service such as the brake, ABS, traction control and forward Collison. Through a quick google search, saw there are many issues with the master cylinder leading to brake issues. At this time, the car only has 535 miles. Prior to this incident, the car had no evident issues. I contacted my local dealership to set up an appointment to have the issue assessed and fixed. The appointment is scheduled for 11/5/25. I will not be able to drive the car in the mean time, as it poses a safety concern (brake failure) to my family and myself.

I started my car last Sunday afternoon (10/26/25) and it began to alert me with tones and flashed on my dashboard "Service Brake Assist" and "Service ESC". Prior to that I drove it earlier that morning and it was seemingly working fine. Took it to the dealership the next evening (Monday, 10/27/25)for them to look at the following day (Tuesday, 10/28/25) and was told they were still looking into it. They just contacted me today (Wednesday, 10/29/25) that it is the brake master cylinder that had failed and that I should not drive it and they offered me a rental car.