2025 Chevrolet Traverse

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 NHTSA 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

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.

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.