2025 Chevrolet Traverse

The master brake cylinder failed around the 1600-mile mark. It seems to be occurring on 2025 Chevrolet Traverse and Buick Enclave models. GM has no ETA on replacement parts. I took it to a nearby dealer service center (Dave Kirk Chevrolet in Crossville, TN), and they diagnosed the issue. I took it to a second dealer (Murfreesboro Chevrolet Buick GMC in TN), and they diagnosed the same issue. The vehicle is now sitting in the dealer's lot with no ETA on a replacement part.

After owning the vehicle for 13 short days, the check engine light came on and a message appeared indicating the vehicle could not be put in reverse due to unsafe vehicle condition. The vehicle just hit 500 miles at this time. Brought vehicle to the dealership 7/14 and it is still there diagnosed with needing a valve body for the transmission which is on back order and no estimate on when it will be available.

My Traverse prompted me to do an update - I did- and all my cameras stopped working- took to dealership - they tried to do a Manuel update and locked up the whole system- and the USB’s stopped working - 4 weeks later waiting on new system and no answer in site for when parts will be in - contacted GM and they escalated issue - told to be patient - just made my 3rd payment - I want a new car not a traverse - want them to buy back their lemon - after reading all the issues shame on GM for ignoring all these complaints

Purchased new 25 Traverse. Driving from AR to OK, stopped at a store, parked car. Upon returning to car, start ignition and red "BRAKE" light illuminated as well as ABS, Traction control and forward collision icons all lit. "Service brake assist, service esc, rear auto brake and park assist unavailable" warnings all show on the dash. Vehicle had 2747 miles at time this occurred. Systems check on dash showed all tires not registering on the vehicle and the vehicle icon illuminated orange. Vehicle needed to "relearn sensors." Vehicle has several clicking noises in the dash after shutting off. Vehicle brake pedal clicks when depressed at low speeds (as in driving in a parking lot) These noises and issues were not occurring prior to this vehicle stopping at the 2747 miles. Vehicle is unsafe to drive as this is the main stopping system, we were 300 plus miles from home when this happened.

On 6/18/25 vehicle started displaying "Service braking system" and "service electronic stability control" warnings along with warning chimes and various malfunction indicator lights. Malfunction Indicator Lights included service brakes, ABS, and ESC. Vehicle taken to dealer service department on 6/18. Service department has replaced the battery and brake assist module, but the problem persists. GM says to replace the brake master cylinder, but no parts are available. Dealer has impounded the car as a safety concern and has provided a loaner vehicle. Because this involves the service brakes it is a safety concern.

The transmission system on my 2025 Chevrolet Traverse began showing signs of failure approximately 2–3 months after purchase. Symptoms include erratic shifting, gear hesitation, and sporadic power loss while driving. Although the issue was promptly reported to Chevrolet headquarters, I was unable to bring the vehicle to the dealer earlier due to the lack of available loaner vehicles. The car is now at the dealership and has been there for nearly three weeks without any updates or contact from the service team. The transmission is available for inspection, and documentation of the issue exists. The malfunction has created safety risks during normal driving, including delayed acceleration when merging into traffic and unexpected gear disengagement at speed. These conditions compromise vehicle control and increase the likelihood of a collision. Additionally, the vehicle produces a persistent squeaky noise from the accelerator pedal during operation, which could indicate underlying mechanical stress or a deeper linkage issue. The sound is both distracting and concerning, especially during highway driving or sudden acceleration attempts.

While using self driving on a decided highway I came up on a slower moving vehicle. I was at a 65 mph speed. The turn signal for a left turn came on. My vehicle changed lanes to pass. As I got along side the other vehicle it increased speed. We were then side by side at the same speed. I waited to see what my vehicle was going to do. It then turned on the right turn signal. I believe if I didn’t grab the steering wheel my vehicle would have turned into the other vehicle. Clearly the sensors didn’t detect the car next to me. Thank you for considering this.