While driving down a two-lane blacktop road at 70 MPH (the posted speed limit) the engine, a 6.2 L L87 with a little over 15,000 miles, grenaded and seized. At the time I recall a warning message that said something like "engine shutdown". Fortunately the electronic transmission self-shifted into neutral so the car could coast to a stop. Had it not done this a loss of control would have been likely at this speed. The vehicle was towed to the local Chevrolet dealer in Bozeman, Montana (Resseler Chevrolet) where it was confirmed the next day the engine had seized. The dealer is currently replacing the seized engine with a replacement long block. The dealership currently has the engine and is planning to ship it back to Chevrolet or GM for tear down and inspection. They are also replacing the radiator and all coolant hoses as a precaution. Two weeks prior I took the vehicle to the same Chevrolet dealer complaining that on one day the engine shut off four times within 1 mile. Each time it displayed a warning message that said "restart engine", which it did each time. I also complained about a ticking noise that began in the engine at 12,000 mile. The dealer reported that the engine sounded fine and that they could not reproduce the engine shutting off on its own. This engine was NOT part of the large L87 recall. At time of purchase I was told by the selling dealer (Kendall Chevrolet in Maryville, Washington) and the local dealer (Resseler) that the engine was assembled after assembly line procedure were put in place to avoid the same issues as the recall engine. I've been and engineer for 46 years. The problem with this engine is not the assembly line, it is the never before used tight moving component tolerances and the water thin oil demanded by the manufacturer. The design shortcomings are compounded by systems such as cylinder deactivation and auto stop that significantly acceleration engine component wear.

Source: NHTSA complaint ODI #11764157 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2024 Chevrolet Suburban. The contact stated that upon brushing snow off the vehicle, the contact noticed that there was snow inside the headlights, which later turned into ice and dimmed the headlights. The contact stated that while driving at an undisclosed speed, the failure recurred, causing the contact to pull over to the side of the road to clean the headlights. The dealer was not notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 360.

Source: NHTSA complaint ODI #11648988 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2024 Chevrolet Suburban. The contact stated that while towing a trailer, the message "Trailer Brakes Disconnected" was displayed. Due to the failure, the trailer brakes locked up and the trailer came to an abrupt and rough stop. Upon investigation, the contact discovered Technical Service Bulletin: 23-NA-149; which was related to the solar panel battery charger or generator on the trailer. The trailer battery was fully charged and had a higher charge than the battery needed and could back feed into the trailer brake power module and cause it to shut down. The dealer was notified of the failure, and the contact was informed that the vehicle was not under recall. The manufacturer was also notified of the failure, and the contact was referred to the NHTSA Hotline to file a complaint. The vehicle was not repaired. The failure mileage was approximately 5,000.

Source: NHTSA complaint ODI #11728081 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2024 Chevrolet Suburban. The contact stated that while driving at approximately 30 MPH, the steering wheel locked at an angle, and the message "Power Steering Not Active" was displayed, causing the vehicle to strike a curb. The steering column, control arm, radiator, fender, and wheel were significantly damaged due to the incident. The vehicle was then towed to a dealer, where it was diagnosed that the power steering module had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, and an investigation was completed. The failure mileage was 58,277.

Source: NHTSA complaint ODI #11742905 · view all complaints for this vehicle at nhtsa.gov

The contact owns a Nuna Rava Car Seat, Model Type: Convertible, Model Number: CS05013-GRN, Manufactured Date: July 16, 2016. The contact stated that the harness buckle became difficult to adjust while attempting to secure the child in the car seat. The contact received notifications of NHTSA Campaign Numbers: 24C002000 (Child Seat); however, the parts to do the recall repair were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue.

Source: NHTSA complaint ODI #11639840 · view all complaints for this vehicle at nhtsa.gov

1. Sunroof 2. Driving on 81 N slightly past the Middlesex exit at highway speeds. My 4 minor children and I heard what sounded like a large balloon popping inside my car. Upon further inspection, my sunroof spontaneously exploded. Absolutely nothing hit our car. The more research I’m doing, this is a known issue with GM manufactures and they have done nothing to correct this issue. 3. I’m working on getting a repair scheduled, once we figure out if it’s under warranty or we have to pay for it through insurance. 4. No warnings

Source: NHTSA complaint ODI #11736953 · view all complaints for this vehicle at nhtsa.gov

Subject: Formal Safety Complaint—Cracked 22-Inch Polished Aluminum Wheels on 2024 Chevrolet Suburban To Whom It May Concern: I am submitting a formal complaint concerning repeated failures of the original 22-inch polished aluminum wheels installed on my 2024 Chevrolet Suburban, which I purchased new. Two wheels have cracked without any known impact, collision, road-hazard event, or other incident that would reasonably explain the damage. The first wheel cracked at approximately 25,000 miles. Tire pressure began dropping unexpectedly and ultimately fell to zero. The wheel was inspected and replaced by a dealership in Cincinnati. A second wheel later cracked and caused another sudden loss of tire pressure without warning. During that incident, I experienced difficulty maintaining steering control, creating a serious risk of a crash and injury. The second wheel was inspected and replaced by Tire Discounters in Lebanon, Ohio. The recurrence of substantially similar failures raises concern that the wheels may contain a material, manufacturing, or design defect. Aluminum wheels should not crack during normal operation in the absence of impact damage. A sudden loss of tire pressure, especially while the vehicle is moving, presents an unacceptable safety risk to the vehicle’s occupants and other road users. I respectfully request that Chevrolet and General Motors promptly: 1. Investigate these wheel failures as a potential safety-related defect; 2. Arrange for a thorough inspection of all remaining wheels on the vehicle; 3. Replace any affected wheels at no cost to me and review reimbursement for related expenses already incurred; 4. Confirm whether similar complaints, technical service bulletins, special coverage programs, or recalls have been identified; and 5. Provide a written response explaining the findings and proposed corrective action. I can provide the vehicle identification number, purchase documentation, mileage records, photographs, inspection findings, r

Source: NHTSA complaint ODI #11764518 · view all complaints for this vehicle at nhtsa.gov