2025 Chevrolet Traverse

On April 11, 2024, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE24011 after receiving complaints concerning a loss of brake assist in 2023 MY Cadillac Lyriq vehicles. These complaints allege a hard brake pedal, followed by a “Brake System Failure” message at start up or while driving. GM shared records regarding several internal investigations for loss of brake assist due to alleged spindle fractures in the eBoost system. GM has stated that in the event of a spindle fracture, anti-lock brakes (ABS), stability control, and traction control remain functional until the vehicle comes to a complete stop. At this point, ABS, brake assist, stability control, and traction control functions are lost. The loss of these functions causes the vehicle to set one of three Diagnostic Trouble Codes (DTCs) based on failed performance criteria for the Electronic Brake Control Module (EBCM). These DTCs, in turn, activate several driver alerts: an audible chime, a visual “Service Brake System” message in the display, and multiple illuminated Malfunction Indicator Lights (MILs) for the ABS, Traction Control, and Brakes informing the driver of loss of functionality. The vehicle speed will also be limited to 70 KPH (43 MPH). Since opening PE24011, ODI has continued to receive reports of loss of brake assist. Some of these reports describe symptoms inconsistent with GM’s description of a spindle failure. These reports allege an immediate loss of brake assist functionality as opposed to the loss occurring after the vehicle comes to a complete stop. The sudden loss of brake assist during a braking event could result in extended braking distance, which increases the risk of a crash or injury. ODI believes further analysis is necessary to assess the potential for failures in GM’s eBoost system to resulting in safety-related outcomes. At this time, ODI is aware of the following vehicles that are equipped with this eBoost system: 2023-2026 MY Cadillac Lyriq, Chevrolet Colorado, and GMC Canyon; 2024-2026 MY Buick Enclave, Envision; Chevrolet Blazer EV, Equinox EV, Traverse; Cruise Origin; and GMC Acadia; 2025-2026 MY Cadillac Celestiq and Optiq. ODI is also aware of 2024-2026 MY Acura ZDX and 2024-2026 MY Honda Prologue vehicles that were built with this system. The Acura and Honda vehicles were manufactured by GM in a joint venture with Honda, and will be included in the Engineering Analysis as peer vehicles. ODI is opening this Engineering Analysis to further assess the safety-related consequences of a failed eBoost system. In addition, ODI is expanding the scope of the investigation to encompass all GM vehicles that share this eBoost system. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

I had multiple break warming lights pop up on the dash. A few minutes after that my brakes completely went out. I receive a message that said “brake assist failure, press break hard, speed limited”. The pedal went completely soft and pushed all the way to the ground with the car still rolling until finally coming to a complete stop. Turned off the car once stopped and the breaks reengaged for a couple minutes then failing again. I almost had a car accident.

NHTSA ID

11774805

Incident

Oct 30, 2026

The contact owns a 2025 Chevrolet Traverse. The contact stated that while driving, approaching a traffic light, the Electronic Stability Control (ESC), rear collision warning, service assist, front collision warning, check engine light, and multiple brake warning lights illuminated. The emergency brake failed to function. The vehicle was towed to a local dealer, where the master cylinder failure was diagnosed, and the part was replaced. However, while driving after the repair, a complete brake failure occurred alongside the same warning lights. The contact lost control of the vehicle and traversed two intersections. The contact attempted multiple times to stop the vehicle, and the contact's daughter exited the moving vehicle before the contact stopped the engine by depressing the ignition button. The police were contacted, and a CAD report was generated. The vehicle was towed back to the dealer, where a second master cylinder failure was diagnosed and repaired under warranty. The failure mileage was approximately 19,357.

NHTSA ID

11772194

Incident

Oct 5, 2026

Mileage

19,357 mi

While I was pulling into an intersection, my brakes and break system failed. The brake pedal went straight to the floor without any resistance. I had no ability to put on an emergency break. I was able to navigate into a parking lot where i still could not get my vehicle to come to a complete stop but I was able to put it into park. The warning on my car read "Break assist failure. Press hard to break. Speed limited." I was already driving in traffic while I received this warning.

NHTSA ID

11771313

Incident

Oct 14, 2026

Vehicle: 2025 Chevrolet Traverse LT FWD VIN: [XXX] Purchase Date: XXX Incident Date: XXX Mileage: 35,975 INCIDENT DESCRIPTION: On Fr XXX, just seven days after purchasing this vehicle from Enterprise Car Sales, I started my 2025 Chevrolet Traverse and was immediately presented with multiple serious braking and vehicle safety-system warnings. The primary warning stated: "BRAKE ASSIST FAILURE. PRESS HARD TO BRAKE. SPEED LIMITED." Additional warnings included: - Service ESC (Electronic Stability Control) - ABS warning light illuminated - Traction/stability control warning - Forward Collision System Unavailable - Red BRAKE warning illuminated - Check Engine light illuminated These warnings appeared during the same startup event while the vehicle was stationary. SAFETY CONCERNS: I am extremely concerned that a vehicle with fewer than 36,000 miles is reporting a potential failure of its power-assisted braking system, along with simultaneous malfunctions involving ABS, stability control, and forward collision protection. The dashboard specifically instructed me to press harder to brake and indicated that vehicle speed was limited. This raises serious concerns about braking performance and the ability to safely stop the vehicle, particularly during an emergency. I am aware of NHTSA investigation EA26006 concerning potential electronic braking-system failures in certain General Motors vehicles, including the Chevrolet Traverse. The symptoms reported in that investigation appear similar to the warnings displayed by my vehicle. The underlying cause has not yet been confirmed. MANUFACTURER NOTIFICATION: I formally reported this incident to Chevrolet/General Motors. GM Case Number: XXX Photographs documenting the warnings and mileage are available. REQUEST: I request that NHTSA document this incident as a potential vehicle safety defect and evaluate whether it relates to existing complaints or investigations INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11770387

Incident

Oct 9, 2026

The contact owns a 2025 Chevrolet Traverse. The contact stated that while driving at 25 MPH, the vehicle unexpectedly came to a complete stop. The failure was a recurring failure. The dealer was contacted and disabled the safety feature, but the failure persisted. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 2,080.

NHTSA ID

11770108

Incident

Sep 11, 2025

Mileage

2,080 mi

Driver side windshield wiper does not clear window, blades have been replaced and still not fixed. Appears to be a wiper arm issue. Rear camera blips out, goes black or shows half a screen during use. Happens almost daily and has caused me to nearly hit cars and or people. Front tire sensor will not recalibrate. Brakes make horrible squeaking noises- Dealer advised this is a known issue with the type of brakes installed on these cars and nothing can be done. Taking car in for service for all these issues.

NHTSA ID

11770072

Incident

Nov 28, 2025

The contact owns a 2025 Chevrolet Traverse. While the contact’s wife was driving approximately 5 MPH, the brakes independently activated while the accelerator pedal was depressed. The ABS, traction control, check engine, collision avoidance, and other unknown warning lights illuminated. An audible alert chimed erroneously without a pedestrian nearby. Due to the failure, the contact’s chest struck the steering wheel. A passenger seated in the front passenger’s side seat experienced mental distress. The vehicle was taken to a local dealer, where it was diagnosed, and DTC: P053D, C055F, P25A2, and 25NA240 were retrieved. The vehicle was repaired under warranty; however, the failure persisted. The vehicle was taken back to the same local dealer and scanned with an OBD2 scanner, and the failures were confirmed. The manufacturer was made aware of the failure. The failure mileage was approximately 34,188.

NHTSA ID

11768279

Incident

Sep 15, 2026

Mileage

34,188 mi

Two issues have been occurring with my car amongst many others, but these are the most recent my vehicle has all seatbelt sensors go off despite no one else being in the vehicle, but me the driver my sensor does not go off. It will not stop beeping or screaming at me until I have to pull over turn off my car turn it back on and essentially reset the system. The other thing my car intermittently when I shifted into park at a full stop for example like in my driveway my foot is fully pressed on the brake, and my car will completely shut off and jerk the car forward and backwards when I shift into park, the engine shuts off but the car was never turned off just shifted in to park. and then resets my entire car all the electrical panels, the dashboard everything goes off-line, then comes back online and I get a message that says to reset driver window, lower window all the way down and raise it back up to which I later found that this meant the entire car program was just reset and started over… This is really frustrating and I fear of something like this happening while I’m actively driving It is not letting me upload the video

NHTSA ID

11766996

Incident

Sep 25, 2026

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3

This Preliminary Information provides diagnostic tips and guidance for situations where key fobs cannot be learned or programmed successfully.

This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

A customer may complain of a vibration under acceleration. Dealer is advised that engineering is investigating the concern and no repairs should be performed at this time.

This Preliminary Information is to inform technicians to not replace any parts at this time and to use the work around provided. When a fix is available, this PI will be updated to a bulletin.

This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener and to replace the opener with a new updated part.