2025 Chevrolet Traverse Electrical Problems

This started happening about two weeks ago. My check engine light came on and my OBD scanner said a NOX sensor code showed. I told the dealership and I guess they cleared the code and it hasn’t reappeared but the reduced acceleration has maintained. It was [XXX] I had just go of work and needed gas. While traveling to the gas station I got notification that my acceleration was being reduced and it was very noticeable. After arriving and pumping gas, I started the car and got 3 additional messages. The car aside my brake assist and ESC needed service, my ABS system was off, and my forward collision system was off. While driving, I noticed that the brakes were still working but acceleration was still being reduced. This is an everyday use car and I have a 6 children who I don’t feel are safe anymore in the car. Not being able to utilize the brakes and the reduced acceleration is very concerning especially when in traffic. I have a little over 27500 miles on the car. It just came from the dealership to get the telematics module replaced last week because it went out about a month ago. I’ve only had this car a year and it seems like the issues are becoming more common everyday. I will be taking care back to dealership tomorrow. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11754653

Incident

Aug 4, 2026

Wife had car sitting over night from doing a EMS shift. Went out to car in morning to start to return home and when car started ABS light, ECS light, Brake Light, and Collision light came on. This has resulted in no ABS or safety features. Called dealer and can't look at car for over a month. There was no mention about not driving. If the wife needs ABS or front radar, she will not have it resulting in a more serious accident.

NHTSA ID

11752038

Incident

Jul 22, 2026

Our car one day showed several illuminated dash lights regarding brake system, along with several pop up warnings. We took it to a Chevrolet dealer for service. They’ve had it for 54 days. They’ve confirmed widespread brake system and electrical system failure, but even after escalating to corporate tech assistance, there is no progress nor resolution available. We were told they have at least a dozen others with this same issue. It is wildly inappropriate that there has not been a recall issued as this is a serious safety defect. We demand a buyback from GM for putting this death trap on the market knowing they had these issues with 2024 models but continuing to roll 2025 and 2026 models with the same issues.

NHTSA ID

11745334

Incident

Apr 27, 2026

Won’t go into drive or reverse at time. Auto brake initiates automatically and car will come to complete stop with no other vehicles in front of my vehicle. Dash will freeze. Service engineer, service emergency calling, service engine, calls on star

NHTSA ID

11743927

Incident

Nov 1, 2025

NHTSA Defect Report (Initial Portal Filing) Manufacturer Target: General Motors (GM) Filer: [XXX] Classification: Mechanical Defect & Administrative Evasion Narrative for Submission I am filing this formal defect report regarding a catastrophic, systemic safety failure present in the 2025 Chevrolet Traverse architecture (VIN: [XXX]), manufactured by General Motors. The vehicle was originally purchased at AutoNation Timonium. THE SAFETY DEFECT AND TELEMETRY PROOF On March 18, 2026, the vehicle suffered a total failure of the transmission and drivetrain systems. It was immediately surrendered to Preston Chevrolet, where it remained completely out of service for 34 consecutive days. GM's own OnStar Diagnostic Telemetry automatically dispatched critical fault alerts while the vehicle was stranded, explicitly logging the following irrefutable failure codes: DTC U1962 (PCM - Engine and Transmission System): Warning stated: "System transferring power to the drive wheels not performing as expected." This indicates a catastrophic decoupling or failure to transfer motive power. If this failure occurs at highway speeds, it results in a total loss of propulsion, creating an extreme rear-end collision hazard. DTC U0452 (VIU - OnStar System): A simultaneous failure in the Wireless Communication and Safety system, meaning that when the drivetrain catastrophically fails, the vehicle's automated emergency SOS and crash-reporting telemetry is actively blocked or compromised. ELEVATION TO ADMINISTRATIVE EVASION General Motors and its authorized dealer network were provided with formal written notice of this defect. The 30-day statutory right to cure window fully expired without any mechanical resolution. Rather than deploying engineering solutions to rectify the severe safety defects they released into the public domain, GM has instead deployed aggressive legal maneuvers designed to evade accountability. Continued text in OFFICIAL_NHTSA_DEFECT_REPORT PDF INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5

NHTSA ID

11742597

Incident

Mar 18, 2026

I go to turn on the car on a Friday night and it won’t turn on. I got multiple failures and it said fatal errors take to dealer immediately. I brought the car to the dealer and they said the control panel needs to be replaced and they’re estimating at least a month. I’m one of four cars on a lot that need work for the same exact issue.

NHTSA ID

11741646

Incident

May 22, 2026

Car cut off in the middle of driving it entire screen goes black and disable, OnStar does not go off continues to blink green even when vehicle is disable, vehicle is not completely powering off after shut down causing the battery to drain overnight.

NHTSA ID

11739951

Incident

Feb 28, 2026

While driving the steering wheel will intermittently lock up or make it where you cannot turn the steering wheel at all. The collision sensors will go off and cause vehicle to lock the brakes up when you’re not even close to anything. Also, random messages will appear in dash as shift to neutral while driving ect. See pictures.

NHTSA ID

11736899

Incident

Nov 18, 2025

My car randomly started alerting me of “ECS service” & “Brake assist service”. The dealership essentially did nothing even though there is an active recall on the 2024 models.

NHTSA ID

11736611

Incident

May 8, 2026

Vehicle: 2025 Chevrolet Traverse On [XXX] at approximately [XXX], while driving south on [XXX] , my vehicle suddenly shut off without warning resulting in a complete electrical failure. During this event, I lost the ability to accelerate, activate hazard lights, unlock doors, open or close windows, or use the OnStar system. The vehicle restarted briefly but then shut off two additional times before I could safely move it off the road. There were no warning messages or signals prior to this incident. This created a serious and immediate safety hazard, as I was unable to alert other drivers or exit the vehicle during the failure. I am requesting a formal investigation into this issue, documentation as a safety defect, and immediate corrective action. This incident poses a significant risk to driver and passenger safety. The vehicle has been towed to the dealership it was purchased from. The problem has not been confirmed or reproduced by the service center. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11732295

Incident

Apr 17, 2026

The contact owns a 2025 Chevrolet Traverse. The contact stated that while attempting to start the vehicle with the Push-To-Start feature, the vehicle failed to start as intended, and the battery was drained. In addition, AAA Roadside Assistance arrived at the residence to recharge the battery. The vehicle was taken to a local dealer, where it was determined that the On-Star module was draining the battery, preventing the low power mode from activating. The contact stated that the failure had occurred on several occasions. The manufacturer was made aware of the failure. The failure mileage was approximately 13,000.

NHTSA ID

11727916

Incident

Mar 30, 2026

Mileage

13,000 mi

Initially, the engine would intermittently fail to start and at times would not start at all. I took the vehicle to a certified Chevrolet service center, where the battery was tested and found to be functioning properly. They later concluded that a faulty front-view camera was disrupting the electrical system and ordered a replacement (my first visit was Friday, 9/26/25). I took the car home for the weekend due to family obligations. On Monday, 9/29, while driving back to the service center, the engine suddenly shut off on a local road. The brakes went completely to the floor for 3–5 seconds before the engine restarted—just before I nearly collided with another vehicle at a red light. I reported this immediately, and the dealership kept the car for further testing. On Thursday, 10/2, they informed me they found no additional issues and believed the camera was the root cause. However, the problem persisted. On Sunday, 10/5, while stopped at a red light at Hawthorn St. and Memorial Dr., the engine shut off again as I began to accelerate. The brakes sank to the floor, and I had no steering control for approximately 5–7 seconds before the vehicle restarted. My wife and I were extremely shaken, especially with our children in the car. On Monday, 10/6, we contacted roadside assistance to tow the vehicle back to the service center. After additional testing, we were informed that the battery had failed this time and was replaced. However, replacing the battery does not reassure us that the engine and braking system will not fail again while driving, or the brake failure would happen again when the battery is low - which poses a serious safety risk to our family. When my wife called GM to report this issue, all they offered was 200 points worth of rewards....We originally bought this car for safety, but not this has been compromised and we no longer feel safe. Thank you for your attention to this matter. I am happy to provide any additional information if needed.

NHTSA ID

11719203

Incident

Sep 29, 2025

Onstar Module failed causing battery to drain and no ETA on part -- from Chevy - To drive the vehicle the module is disconnected by the dealer as parasitic battery drain causes all other safety systems to fail - with module disconnected hazard lights will not work - so if situation happens where hazards are necessary to save occupants life they are not working and functioning due to care to able to function.

NHTSA ID

11717337

Incident

Feb 2, 2026

El 6 de enero de 2026, minutos después de retirar el vehículo del concesionario tras un servicio de frenos, el sistema de enfriamiento presentó pérdida total de refrigerante debido a una manguera del radiador rota. El vehículo fue regresado inmediatamente y quedó retenido por recomendación técnica de no conducirlo por riesgo de sobrecalentamiento del motor. La condición representa un riesgo de seguridad pública si ocurre durante la conducción, ya que puede provocar pérdida súbita de potencia, detención inesperada del vehículo y posible incidente vial. El 21 de enero de 2026, durante inspección previa a entrega, se detectó una segunda falla: módulo OnStar inoperante (GPS no funcional). Ambos eventos fueron diagnosticados por el concesionario autorizado. La pérdida súbita de refrigerante y posible sobrecalentamiento del motor implica riesgo de falla mecánica repentina, pérdida de potencia o detención del vehículo en circulación, lo que puede causar un incidente vial. El concesionario indicó explícitamente que no debía conducirse el vehículo bajo esas condiciones. Sí. Ambos problemas fueron confirmados por el concesionario autorizado: primero la falla del sistema de enfriamiento, luego la falla del módulo OnStar. El vehículo ha sido inspeccionado por el concesionario autorizado. El fabricante ha sido notificado formalmente y existe un caso abierto con su departamento de atención al cliente. No existían advertencias previas. Las alertas y ventilador excesivo aparecieron minutos después de salir del concesionario el 6 de enero. La falla del GPS se detectó el 21 de enero durante inspección previa a entrega. El vehículo continúa retenido por reparación pendiente y no ha sido devuelto en condiciones seguras o funcionales.

NHTSA ID

11716605

Incident

Jan 6, 2026

The vehicle has been brought to an authorized dealership for numerous service visits related to electrical system issues that ultimately affected the braking system. During one service visit, the vehicle was returned to me with multiple active dashboard warning lights illuminated related to the braking system, including Electronic Stability Control and Automatic Emergency Braking. I questioned the presence of these warning at pickup and was advised by the dealer that the vehicle was safe to drive and that the warnings would clear on their own. After driving the vehicle for a short period, I became uncomfortable continuing to operate it with brake-related warning lights still active and returned it to the dealer. Upon further diagnosis by a service technician, it was discovered that the vehicle has significant brake system defects requiring replacement of major components, including the brake control module and master cylinder. During diagnosis, the brakes locked and the parking brake would not disengage, rendering the vehicle undrivable. No collision or injury occurred. However, the vehicle was released to me with active brake system warnings and later found to have serious brake defects. Due to the safety-critical nature of the braking system and the repeated electrical and brake-related service history, I am reporting this for documentation and review.

NHTSA ID

11716432

Incident

Dec 29, 2025

Vehicle currently at dealership for ESC, brake system and ABS warning lights coming on. Unable to use cruise control once these lights came on.

NHTSA ID

11714149

Incident

Dec 20, 2025

I own a 2025 GMC Traverse purchased in July 2025. The vehicle is experiencing ongoing electrical system issues. The GPS and OnStar systems are inoperative, including vehicle location services. The vehicle cannot connect to OnStar or detect a Wi-Fi connection. In addition, the adaptive cruise control is not functioning properly. These systems have been inoperative for approximately 4 weeks. The vehicle was taken to the dealership and I was informed that parts are required, but no repair timeline has been provided. The loss of GPS, OnStar emergency services, and adaptive cruise control presents a safety concern, as emergency response, vehicle tracking, and driver assistance features are unavailable while driving. The issue remains unresolved.

NHTSA ID

11711776

Incident

Dec 1, 2025

The contact owns a 2025 Chevrolet Traverse. The contact stated that immediately after purchasing the vehicle, the vehicle experienced several electrical failures, including the On-Star module malfunctioning. The On-Star module was replaced twice. During the failures, the cruise control feature became inoperable, and the computer updates were not received. Additionally, the battery became drained several times, and the vehicle needed to be jump-started. The contact also indicated the shark fin antenna had ejected from the vehicle while driving. The vehicle also abruptly stopped while driving on several occasions, and while driving, there was an abnormal metallic scraping sound coming from the engine compartment. The radiator hose had failed, causing coolant to leak from the vehicle. The hose was replaced, and the vehicle was repaired. The manufacturer was notified of the failures. The failure mileage was 44,000.

NHTSA ID

11709852

Incident

Feb 21, 2025

Mileage

44,000 mi

Driving home coming up to a traffic light - I turned left onto Rd - After turning lost the brakes. Saw message on dashboard along with many others indicators as well. Saw the same message as the previous time ““Brake Assist failure. Press hard to brake. Speed Limited”.

NHTSA ID

11708980

Incident

Jan 5, 2026

Driving home - what looked like warning indicators on the dashboard, came on. Lost the ability to brake. Had to push the pedal all the way to the floor to get some braking to happen. A message came on the dashboard “Brake Assist failure. Press hard to brake. Speed Limited”. Once we were able to stop. We turned the car off. then turned it back on. We saw a message on the dashboard to “open the drivers door” and then “roll down the drivers window”. We did that and the car seemed to be normal again

NHTSA ID

11708979

Incident

Dec 24, 2025

All connected services do not work. The car cannot receive any updates to software/hardware posing potential safety issues. There was no warning. They all just stopped working. The vehicle was brought to the dealer in the beginning of October 2025 and I still do not have a fix or solution or potential timeline.

NHTSA ID

11706448

Incident

Oct 1, 2025

Beginning in May 2025, my 2025 Chevrolet Traverse began exhibiting a false “rear liftgate open” condition when the liftgate is fully closed. This defect triggers a continuous audible alarm that occurs before every drive and persists for the entire duration of the drive, stopping only when the vehicle is turned off. As a result of this defect, the rear windshield wiper and washer are disabled, eliminating rear visibility during rain and snow. The vehicle alarm system also cannot be armed, creating a security risk. The continuous alarm causes significant driver distraction, and the loss of rear visibility impairs safe operation of the vehicle, particularly in adverse weather. Minor children are frequent passengers, and the defect has occurred while they were in the vehicle. The vehicle has been presented to an authorized Chevrolet dealership on four separate occasions for the same issue. Multiple repair attempts, including diagnostics, software updates, component replacement, and latch assembly replacement, have failed to correct the defect. Because the alarm cannot be armed, the vehicle was left unsecured and was subsequently broken into, resulting in theft of personal property. General Motors has been notified and declined repurchase, directing me back to repeated diagnostics despite the unresolved safety-related defect. Problem Category: ☑ Electrical System ☑ Visibility / Wipers ☑ Warning Systems ☑ Vehicle Safet

NHTSA ID

11705790

Incident

May 6, 2025

A car approached my blind spot and the blind spot detection did not alert. I tried to change lanes assuming the system was functioning and nearly ran someone off the road. Shortly after this the “service blind spot detection light” came on. Following this failure the vehicle telematics went out rendering the paid on star safety system useless. Parts to remedy the issue on indefinite back order per GM on 12/8/25.

NHTSA ID

11704126

Incident

Nov 25, 2025

Brake assistance failure. Brakes failed! ESC SERVICE I was able to set it up for inspection Could of caused a accident hurting other people or hurting my family, I use this vehicle to transport my 2 babies Vehicle would not brake properly could have cause serious injuries For my vehicle not yet has not been inspected it was towed, from what I have heard from current Traverse owners they have experienced this same issue with even lower milage No warning lights no indications of failure just happend instant twice

NHTSA ID

11703450

Incident

Dec 5, 2025

Telematic control module failed. vehicle has 7k miles on it and brand new. Still under bumper to bumper warranty. Dealership diagnosed the emergency services /navigation system failure and ordered the part which is on significant backorder to due to nationwide shortage. No eta for repair. Problem occurred oct 25, 2025. This needs to be a recall. dealership not providing suitable and comparable loaner due to not having 3 row available. stating enterprise does not have one. put me on waiting list for suitable loaner. escalated to gm customer care, gm customer care supervisor, gm executive resolution, dealership supervisor with no immediate solution. Will be filing lemon law case.

NHTSA ID

11700514

Incident

Oct 25, 2025