Master cylinder needing replaced confirmed by dealer. ABS. Traction control forward emergency braking system service lights appear on dash and the systems are disabled saying service soon. Adaptive cruise control disabled super cruise disabled.
2025 Chevrolet Traverse brakes complaints
Page 4 of 5: complaints 71 to 100 of 119, newest first, as owners wrote them.
Master cylinder went out with only 5400 miles
The contact owns a 2025 Chevrolet Traverse. The contact stated that while driving at approximately 45 MPH through a green light, another vehicle failed to yield at 50 MPH for a red light due to being impaired, causing a collision in which the contact’s vehicle was T-boned. No warning lights were illuminated before the crash. The front and side curtain air bags failed to deploy. The contact reported that no injuries were immediately sustained, and no medical attention was provided at the scene. However, the contact was later transported to a local emergency facility and diagnosed with a back injury. A police report was filed.. The vehicle was towed to an independent mechanic, where it was diagnosed that the air bags, service brakes, and battery of the vehicle had failed and needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 13,000.
Went out for lunch and the following warning lights popped up on my dash, "Brake", the ABS light was lit up, service brake assist and service ESC all popped up. Had my truck towed to lexington park chevy because it said it was not safe to drive
Normal evening running errands and brake pedal went to the floor, unable to stop and starting rolling into oncoming traffic. Put transmission in Park, then reverse to get out the main highway and back to the service road, car would continue to roll. Service ESC, Service Brake Assist, Engine light and more popped up on dash. Vehicle had to get towed. This could have been a very dangerous situation. Being told the Master Cylinder needs to be replaced. Part is ordered with no delivery date.
When putting my vehicle in park it jumps forward about 1 foot. This happen about 70% of the time when I shift into park. Also, my vehicle will brake randomly while driving. This happened one time on the freeway where my car came to a complete stop, luckily there was no one driving close behind me. More often this occurs while backing out of my driveway. My vehicle is available for inspection at any time. These problems are concerning because if my car jumps forward after being placed in park, I could potentially hit a vehicle parked in front of me or a person walking by. The braking while driving is very scary, especially since I was on the freeway and it could've possibly resulted in a serious accident. I took my vehicle to the dealership, and they had it for several days. When I picked it up, I was told that they were unable to recreate the issue of the car jumping forward. Regarding the braking while driving I was told that "a bulletin had been issued for this problem but since there is currently no fix, we advise the safety features be turned off." The mechanic then went on to say, "I'm unable to turn these features off because it would be a liability, but I can show you how." I spoke to the head of the service department the next day because I am scared to drive my young children around in this vehicle and was told that the braking sensors are just sensitive. At this point I'm not driving the car for safety reasons. No messages come on when the vehicle jumps forward after parking. When the vehicle brakes completely while driving I've seen the message saying once "obstacle detected" but other times I've been so startled I don't look at the dash, I'm more worried about getting hit in that moment. I did notice my seat vibrate every time this has happened. This all began shortly after buying my vehicle in February 2025.
Suddenly with just over 8300 miles on the vehicle, lights for ABS, traction control, forward collision and parking brake all came on. The brake pedal started to feel spongy on the way to the dealership. The dealership replaced the master cylinder under warranty.
Car had Service brake assist warning along with 3 or lights on dadhboard. I was told master brake cylinder needs replacing
Took my Traverse through a car wash and when putting the vehicle from Neutral to Drive, a slew of lights turned on (ABS, traction control, check engine light). Car will be evaluated this coming week but all signs are pointing to the brake module and master cylinder as seen all over the internet and Reddit. This is a serious, common issue with GM vehicles and something needs to be done asap about this.
I purchased a 2025 Chevy Traverse in April 2025. The car had under 1056 miles on it. I was in another state 325 miles away from home when lights came on in the car. The PARK brake came on, the ABS light came on and a few others. The alert said, Service ESC, and service Brake Assist. What component or system failed or malfunctioned, and is it available for inspection upon request? We did research online and there were 33 other complaints from people with similar complaints. They reported that it was a master cylinder part and the dealers don’t have the part in stock. It could take up to two weeks for the part. How was your safety or the safety of others put at risk? My safety and my husband’s safety were at risk because we had to drive the car home. Our lives were at risk if the brakes failed. We took it to Key Motors a Chevy dealership in S. Burlington, VT. He said they would have to diagnose it themselves and the part could take two weeks or more. We cut our vacation short and could not stay in VT that long. We are elderly and did not have enough medicine, not to mention the cost of hotels. The VT dealer said without the computer, the car defaults to the driver like a 1980’s car. We took our chances and drove it home. Has the problem been reproduced or confirmed by a dealer or independent service center? No, but many people online have complained of the same problem. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? We had it towed to our local dealership, Bob Johnson Chevrolet. They just sent us a bill for $214 for certified multi point vehicle inspection. I still don’t know what problem. Onstar diagnosed it as ABS braking and stability diagnostic code; an issue has been detected in the Antilock Braking System. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No other warnings or symptoms before messages appeared.
Four weeks after purchasing the vehicle the anti-lock brakes light, traction control and forward collision lights all came on. I took it to the dealership and was told this is a known issue with the master cylinder. My car was there for 13 weeks.
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.
On 8/11/2025 the brakes failed and the brake petal went all the way down. The check engine light came on as well as the ABS, traction control, front collision lights. The service ESC and service brake assist came on as well. It’s in the shop and needs a new brake master cylinder.
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.
Started car and began backing up when ECS, Brake, and ABS messages came up. Upon attempting to break at slower rates of speed it felt like the brakes would slip slightly before catching and stopping. At normal rates of speed (25+) it wasn’t noticeable. In shop now with ‘censor failure’
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.
I purchased a 2025 Chevrolet Traverse and experienced a complete failure of the master brake cylinder approximately two months after purchase. The brake system failed as I was operating the vehicle, creating a significant safety hazard. Fortunately, no accident occurred, but the car became unsafe and was in the dealership service center for 5 weeks awaiting repair. This failure occurred with very low mileage and without warning. I am concerned that this may be a manufacturing defect or part of a wider issue. The extended service delay also caused major inconvenience and out-of-pocket expenses. I am submitting this complaint so the federal safety agency can track similar reports and investigate if necessary.
ABS and ESC and brake lights came on. Collision beeping and warning went out. Brake pedal vey late to respond to braking. This vehicle is unsafe. It has been sitting and the Chevy dealer for 2 weeks now with no information given to me about when it will be fixed. I call the dealer every other day and they just say that Chevy will be shipping parts. This is clearly a nation wide problem with this vehicle. I’ve read numerous articles online about people with the same problem and have contacted an attorney
Brake assist, ESC alerts on vehicle. Sat in the dealer service shop for 3 days and said to have been fixed. Still with same issue
Master cylinder failure
We were told we had a faulty master cylinder that needed to be replaced. The ABS, forward collision braking system, rear collision breaking system, and emergency brake were all at risk, which puts a significant risk to the passengers in the vehicle, including children. The problem was confirmed by the dealership with no information about timing of replacement since there is a national shortage of this part. Warning messages included ABS, BRAKE, forward collision, rear collision- lights came on several times. They appeared suddenly after turning on the car without incident. We tried turning off the car and letting it sit for long periods of time without resolution. The dealership initially flushed the brake line without resolution.
Parked the vehicle a Saturday evening went to get into it Sunday morning and the dash was lit up with abs light, service ESC, traction control, check engine light. Called the dealership I bought it from to tell them what was going on, brought it in on a Monday evening to be looked at Thursday. Was called to be informed the master cylinder went bad. Was told by the service manger part would be in to be fixed Wednesday. Wednesday came and gone with no call, finally got a call Thursday evening that the part did not arrive and NOW they have no ETA on the part.
the car had a faulty door that would stick intermittently since the day we purchased it (march 10, 2025) and wouldn't open unless forced. we reported the issue on march 23rd to our sales rep (jorge) and didn't act upon it until two months later when it wouldn't open at all. upon bringing it into the shop on may 27th it was determined that there was a faulty latch. they also discovered that the brake light was on and the car was in need of multiple components - master cylinder, the adapter and the reservoir. we have had a rental car since 5/27/25 and yet to receive our car back.
I was in the car wash and the service ESC came on It also had the traction control, ABS and check engine light came on. When I restarted my car the check engine light only came on . On the Chevy app it says my Anti Breaking System needs serviced. This is a brand new car bought a couple months ago with under 3,000 miles.
While driving my 2025 Chevy Traverse with under 2,000 miles on the odometer, multiple brake-related warnings suddenly appeared on the dashboard, including: Service Electronic Stability Control, Brake Assist, Brake System Warning, and Anti-lock Brake System (ABS). I brought the vehicle to the dealership for diagnosis, where the issue was confirmed. However, I was informed that the replacement part is currently on back order, with no clear timeline for availability. I immediately contacted GM for assistance and was informed that the issue was due to a defective Brake Master Cylinder (part number 85762161). After further research, I discovered that a defective master cylinder can result in partial or complete brake failure, posing a serious safety risk. Given the extremely low mileage and the critical nature of the affected component, I believe this issue warrants investigation. I am concerned that similar failures may be occurring in other 2024–2025 Chevy Traverse vehicles and could lead to dangerous situations if not addressed promptly.
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