CHEVROLET Complaints

OnStar Module malfunctioned, has been diagnosed and awaits identification of specific type of module to determine if one is available or if it is one that will be on back order. The safety of myself and my family was put at risk, along with others, when vehicle braking system randomly activated and slammed on the brakes despite clear highways all around, almost causing us to be rear-ended more than once. This has happened prior to 12/01 several times randomly but we assumed the sensor was sensitive and was picking up something we couldn't see, however this was not the case in this situation. The battery keeps going dead and needing jumped and there are numerous warning messages/lamps. Dealer service department confirmed OnStar module failure and need for replacement, has not yet reproduced braking issues. Vehicle is currently at dealership service department for inspection and was deemed unsafe to drive at this time. Dealer stated they had no loaner vehicles to supply and instructed us GM would reimburse up to $45 daily for rental at Enterprise, so a rental vehicle was obtained and placed on waiting list at two different dealerships for loaner vehicle. WiFi and Navigation System originally quit working, then car battery started dying and requires being jumped multiple times if not driven within 8 hours, Received alerts off and on of "Lane Change Alert System Off", "Service Parking Break", "Adaptive Cruise Control Temp Unavailable", "Service Power Steering", "Service Electronic Stability Control", "Service Transmission Now, Unable to shift soon", and cruise control/Lane assist etc quit working. We became stranded in another town and had to purchase a portable jumper. Dealer currently has no anticipated repair date.

I am submitting this letter to formally notify the NHTSA of a safety critical defect in my 2025 Chevrolet Equinox Activ starting on 12/9/25 involving the Telematics Control Module (TCM), GM part number 85669062. This defect results in intermittent or complete failure of essential OnStar safety functions, including Automatic Crash Response, emergency communication, and accurate GPS location reporting. During normal driving, the vehicle experiences the following failures: •Loss of telematics connectivity •Inability of OnStar services to initialize or maintain a connection •GPS location drift or inaccurate positioning •Failure to reliably transmit vehicle location or contact emergency services These failures occur without user action and under normal operating conditions. The defect directly impairs systems intended to provide crash detection and emergency communication. If a collision occurs, the vehicle may not contact emergency services or may transmit an incorrect location. This represents a loss of a safety system that General Motors advertises as part of the vehicle’s crash response capability. On December 9, 2025, my Chevrolet dealer confirmed that the Telematics Control Module had failed and requires replacement. General Motors has placed this part on national backorder with no estimated availability, leaving the vehicle in an unsafe condition with no available remedy. General Motors has not issued a recall, service bulletin, or customer satisfaction program addressing this defect. The absence of available replacement parts suggests a potential supplier level issue affecting multiple vehicles. Given the safety implications, part unavailability, and potential for a broader pattern of failures, I respectfully request that NHTSA: •Review this defect as a potential systemic issue •Evaluate whether similar failures are occurring in other GM vehicles •Consider opening a Preliminary Evaluation (PE) if warranted. Thank you.

The contact owns a 2018 Chevrolet Malibu. The contact stated that while coming to a stop, the brake pedal suddenly became inoperable. There was no warning light illuminated. The contact stated that excessive force was required to depress the brake pedal. The contact stated that the brake pedal went to the floorboard while stopping the vehicle. The contact then stated that after pulling into a parking lot, the contact attempted to restart the vehicle; however, the vehicle failed to start with the check engine warning light illuminated. The vehicle was taken to an independent mechanic, but was not diagnosed or repaired. The dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 111,000.

The Chevy suffers from the "Shift to Park" issue due to a faulty park switch in the shifter assembly, which is an electrical issue. Apparently GM does not cover this repair but it is dangerous as the car does not shut off even when engine is off and the gear is in park.

The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that while driving 60 MPH with the defroster activated, the contact observed a burning odor, and the rear window shattered. The contact steered to the side of the road and inspected the vehicle. The contact stated that while standing outside of the vehicle, a burned mark was seen on the bottom left side of the outer glass. The contact stated that on the opposite side of the burn mark, there was another mark on the inside of the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 138,000.

The contact owns a 2023 Chevrolet Traverse. The contact stated that while at a complete stop, the engine Auto Start-Stop system engaged, and the ESC warning light illuminated. Additionally, the contact stated that while driving the following day, the vehicle failed to exceed 60 MPH and gradually decelerated. The vehicle later failed to exceed 6 MPH and failed to respond upon shifting to reverse(R). The vehicle was towed to the dealer, where several diagnostic tests were performed, and the dealer determined that the transmission had failed and needed to be replaced. The vehicle was not repaired due to the cost. The contact related the failure to NHTSA Campaign Number: 23V172000 (Power Train); however, the VIN was not included. The manufacturer was notified of the failure and offered to cover half the cost of the repair. The manufacturer referred the contact to the NHTSA Hotline for further assistance. The failure mileage was approximately 69,000.

Hello this particular vehicle often gives us a message stating that side detection is temporarily unavailable and the main issue is the transmission seems to have severe shufdering issues and sometimes gives a shift to park message ive read others having this same issue being recalled but my vin is not listed! The car is available upon request for any inspections necessary

The contact owns a 2014 Chevrolet Impala. The contact stated that after closing the rear passenger’s side door, the rear glass panel shattered unexpectedly. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 104,000.

2021 Silverado 19,000 miles no indication of failure at a busy intersection about to go thru intersection and engines started knocking, multiple check engine lights on. Luckily got thru the intersection and to my place of residence which was very close by. Truck was towed to Chevy dealer. Dealer found 3 bent push rods, 3 bad valves. This engine had the lifters fail completely out of the blue. Oil changed at the dealer, meticulously maintained. Dealer only replaced the faulty bank of lifters due to mileage, seriously if it was under 16,000 they would replace all of them. This is unacceptable. This truck left me almost stranded in a busy intersection, lucky I knew well enough to keep going versus getting T-boned. I just think GM needs to do something about this. Now fast forward to 41K and I'm at the dealer same symptoms except this time my warranty is running up soon and being forced into an extended warranty. There are plenty of online claims, chat rooms, posts, etc to warrant this as a safety issue.

I hadn’t had my car a year and my solenoid in my transmission is in need of replacement. The suv will not pick up speed above 40