2025 Chevrolet Traverse

We have. 2025 Chevy Traverse that we bought 10 days ago and it has 597 miles. I stopped at a location turned off the car. When I got back in to leave and turned it on, The brake light came on, and brake light, collision light, service ESC and service brakes light. Apparently there are 4 or more GM cars in the dealership service department for over a month waiting for the part to fix this issue. The car is currently in the service department of the dealership we bought it from 10 days ago with no known date of fixing due to the national back order on parts.

8/4/25 Vehicle was pulling from side road to main highway when lights and warnings came on dash cluster. brakes were very soft and not very responsive, car was slowed down on its own. Was able to pull into a driveway and take photos of some of the messages. One said service traction control, one said service ASC, and one said ‘brake assist fail, press hard to brake, speed reduced. After restarting car all was normal. 8/11/25. Sitting in some morning traffic and all the same messages came up and brakes were soft again. Was able to keep some distance between myself and other cars until I could get off the road. Immediately made an appointment for dealership service. After restarting car, all was normal again. Took car to dealership at appointed time and they kept it for a week and only did test drives to try and recreate problem. When they couldn’t they returned the vehicle to me with nothing done but clearing codes and checking for updates. This is unacceptable. I am hauling my precious grandchildren in a brand new vehicle that could have a braking failure at any time. Obviously braking failures can cost lives. There is a GM service bulletin for this exact problem in December 2024 (N242482170) requesting the master cylinder should be replaced. This service bulletin doesn’t extend to the 2025 Traverse model and it should as the problems are exactly the same. I hope this can be resolved. I’m very uneasy driving now and just keep wondering when this will happen again and how bad it could be.

On Aug 15th, 2025 I went to pick up my children from school. As I picked up my child and turned the vehicle on to go pick up my second child, the car notified me on the dash board of 4 icons. Brake, ABS, traction and collision. Service ESC and Brake assist service needed. I was very concerned when I went to drive and when I gently eased into the brakes I could hear a small noise, every time I pressed the brakes. My second childs school is about 4 minutes away. I called Chevrolet dealership where I purchased it from in February, explained everything and they said i needed to take it in to a Chevrolet dealership near me. I called the nearest Chevy dealership and they said to bring it in the same day or the next day. Saturday Aug 16th, 2025 at 8am I was at the dealership. They checked to see what codes ran up and if it was safe to drive, they pulled 4 codes and told me it wasn't safe and I needed to leave it for 10-14 days minimum. They said they could not provide me a vehicle / loaner. I had already called Chevrolet Customer service the day before to receive assistance with a temporary vehicle as the dealership had told me they had no loaner to provide. I explained to Chevrolet Customer service that I am a disabled & handicap veteran with children. I do not have a secondary vehicle and it is a necessity as i drop off and pick up my children and attend medical appointments. The employee was able to open a case for me and send it to the regional person around my area. No one has called me. Today Saturday, I dropped off my vehicle and picked up a rental according to the guidelines provided by the Chevrolet employee for reimbursement a GM vehicle under $44 a day. This is a huge inconvenience , unacceptable from a new 2025 vehicle. Ot has put me in a hardship position financially. The hassle, my Traverse has handicap plates and my rental does not. Very upset and frustrated. I need as much support and help from GM / Chevrolet to resolve this SAFETY issue for my children.

Brake light, ABS light, Forward collision light and Traction control light all come on when the car was started. Had to be towed to Woody Folsom dealership in Baxley, GA and is currently still there. Was told it was the brake master cyclinder and it is on nationwide backorder. The part came in this week and they put it in and could not get the car to program. They are waiting for another brake master cyclinder to arrive. So I am at 8 weeks of the car being down and in service at the dealership with no estimated date of when and if it can be fixed. I have received Onstar notifications that says A critical issue with the engine and transmission system in your 2025 Chevrolet Traverse has been detected. The battery in your 2025 Chevrolet Traverse is critically low.

New vehicle (bought in April 2025), vehicle has about 6400 miles. The ABS, forward collision braking system, traction and emergency brake services light all popped up (including alerts stating "Service ESC" and "Service Brake Assist"). Took to the dealership and was told the master brake cylinder needs replaced. They said the part is on back order and no eta.

When my new vehicle hit 4k miles, the dash started to show alerts for "Service ESC" and "Service Break Assist". As well as those alerts, there were additional notification lights for "Brake", "ABS", "Electronic Stability Control (ESC)/Traction Control", and "Forward Collision Alert (FCA)". After some research, I was worried to drive my car incase the breaks would not work properly. So I discontinued to used my car with my 2 young children. The Chevy dealership has confirmed it's the back master cylinder that needs to be replaced. From my research, this is a common issue happening and a roll over issue from the 2024 models.

August 6, 2025 I was driving and it started to rain and there was a little rain on the road and my vehicle appeared to be hydroplaning. I had never experienced that before and it scared me to the point that I reduced my speed significantly. I arrived at my destination and was there for about three hours and when I started my 2025 Chevrolet Traverse I had 4 lights come on my dashboard along with a warning chime. The lights were the BRAKE LIGHT, ABS LIGHT, FORWARD COLLISION ASSIST LIGHT AND TRACTION CONTROL LIGHT; and a Service ESC and Service Brake Assist message popped up in separate boxes from the lights themselves. I turned off my Traverse and hoped it was some fluke thing and again the same lights came on and same messages. I drove my vehicle home cautiously and parked it. I called the dealer I purchased it from the following morning and was given a service appointment 11 days out and I stated that was unacceptable since I was not sure the vehicle was safe to drive from everything I was reading online. The service dept stated that they could place it on a machine if I stopped into the dealership and let me know if was safe to drive. My husband drove it to the dealership 25 miles away and wasn't happy with the service department and spoke to a manager and he stated they would look at my vehicle the following day and gave me a loaner. My husband advised the manager that everything I had been reading pointed to an issue with the master brake cylinder and the parts are on backorder and the manager said he hadn't heard of any issues with them. I received a call 4 days later after asking the status of my new car repeatedly and was told that it is the master brake cylinder and a couple of the parts are on backorder and they don't know when they will arrive; could be a week, two or a month. I am extremely concerned about the seriousness of this issue and the lack of parts to repair the vehicle. As I stated, there are multiple incidents on google over this same issue.

Brake master cylinder ECU failed. Illuminated warning lights for BRAKE, FRONT END COLLISION AVOIDANCE, ABS, and ELECTRONIC STABILITY CONTROL. Took the vehicle to dealership and was told about the part failure. They advised that there was no ETA on parts that are on backorder. The codes were removed and the warning lights went off, but came back on the next day. I was told that the vehicle was drivable, but they could not guarantee my safety. The dealership had no loaners so I had no choice but to drive the vehicle home.