2019 Chevrolet Suburban: complete transmission failure

Filed Jul 22, 2026 · Transmission · 88,000 miles · FL

The contact owns a 2019 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that while the brake pedal was depressed, the vehicle jerked abnormally. The contact stated that the vehicle jerked abnormally hard. No warning lights were illuminated. The vehicle was taken to three dealers, and the vehicle was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 88,000.

Filed Jul 14, 2026 · Engine, Seat belts · CA

Since December 2020, our Suburban has been in for seven extended, documented dealership repair events at Guaranty Chevrolet and Simpson Chevrolet of Garden Grove, totaling 192 cumulative days out of service and $47,560.86 in documented repair invoices — approximately 71% of what we paid for the vehicle. Those repairs have included a complete transmission replacement (58,861 miles), a recurrence of the same active-lifter defect only ten days later, an ignition coil failure, fuel injector and air conditioning failures, an oil pump failure, and, most seriously, a complete engine replacement (66,854 miles) after the dealership documented metal in the oil and filter and engine end play. The situation has continued to worsen. We picked up the vehicle on XXX following the complete engine replacement. Only six days later, on July 6, 2026, the check-engine light returned and we brought the vehicle back to the dealership. We were initially told the issue was a sensor; the following day, we were informed that the replacement engine — which the dealership had disclosed to us at the time was a refurbished unit — was itself defective and would need to be replaced a second time. As of this writing, that repair remains open. In other words, the remedy provided for this vehicle's most serious failure did not resolve the problem, and we are once again without our vehicle. This pattern of failures has caused real, ongoing hardship for our family. We specifically purchased a full-size, top-trim Suburban for its seating and cargo capacity: we have two teenagers at home who depend on us for transportation to school and activities, we regularly care for grandchildren, and our [XXX] daughter has Complex Regional Pain Syndrome (CRPS), a debilitating condition that often requires her to use a wheelchair. The Suburban's cargo space is what allows us to transport her together with her wheelchair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 25, 2026 · Engine · OH

When I first got this vehicle 2019 brand new off the lot the dealership in newark ohio had to completely rewire it. It took them a month to figure it out. I just replaced the transmission and now the engine is out. A piston rod snapped hit both sides an cracked the sides and the oil pan.

Filed May 20, 2026 · Engine, Transmission · FL

Transmission stalling, hesitating, affecting engine performance and rpm's. broke down on highway. We replaced the transmission, now it's doing a similar problem and the mechanic says the engine is failing, cylinders issues. I've read up it's happening to many of the same year make and model. I spent 7k on a new transmission. Now a new engine??? ...frustrating! Please help

Filed Feb 23, 2026 · Driver assistance, Electrical · ME

Year: 2019 Make: GMC Model: Suburban Mileage: Approximately 125,000 miles (purchased under 90,000 miles) 1. Transmission Failure My vehicle is experiencing clear signs of transmission failure, including: •Hard downshifting/clunking •RPM fluctuations while cruising •Shuddering between approximately 30–50 mph •Vibrations while idling •Hesitation and irregular shifting These symptoms have progressively worsened and are consistent with widespread complaints I have found from other 2019 Suburban owners. This appears to be a known issue affecting multiple vehicles. 2. Rear Liftgate / Electrical Malfunction The rear trunk/liftgate has closed on its own without warning multiple times. I have personally been struck in the head several times as a result. This presents a serious injury risk, especially for families loading children or cargo. There is clearly an electrical or sensor malfunction causing this behavior. 3. Automatic Emergency Braking (AEB) System Activating Randomly The most alarming issue is that the automatic emergency braking system has activated on its own multiple times while driving on the turnpike with no obstruction present. This has nearly caused accidents on several occasions. Unexpected braking at highway speeds creates an extremely dangerous situation for both my family and surrounding drivers. These issues are not minor inconveniences — they are serious safety hazards. Sudden braking, unintended liftgate closure, and transmission failure all create significant risk of injury or collision. Given the number of similar complaints publicly reported by other owners, I am requesting that the federal safety agency formally investigate these defects and determine whether a recall should be issued for affected 2019 GMC Suburban vehicles. I am extremely concerned for the safety of my family and others on the road. Please confirm receipt of this complaint and advise if additional information is needed. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)

Filed Sep 6, 2025 · Transmission · VA

Transmission started shifting very hard while in motion. The vehicle shudders while at speed. Extremely loud vibrations coming from under the vehicle. This vehicle only has 75 k miles on it. Mechanic first flushed and changed transmission fluid. Vehicle still shifting and running rough. Mechanic says we have to replace the entire transmission. Vehicle has always had top routine maintenance done. This suburban is too new to require a new transmission. Chevrolet needs to recall this issue and replace at their cost! Lost power while on interstate at 65 MPH. Extremely unsafe!!

Filed May 27, 2025 · Engine · OH

I have a 6.2 v8 engine and the transmission failed and is not currently covered under the class action lawsuit!

Filed May 5, 2025 · Transmission · CT

Catastrophic transmission failure while brining my children to school. Mechanics states the clutch pack possibly went bed causing the transmission to fail. Vehicle services appropriately. Chevy warranty refused to help claim.

Filed Mar 12, 2025 · Transmission · GA

My transmission went out at 116,000 miles. We were having intermittent issues since 100k miles.

Filed Mar 1, 2025 · Transmission · NC

Catastrophic transmission failure while driving on highway trip with family. Thankfully did not completely lock up drive train, but such a catastrophic failure could have caused a transmission/engine lock up leading to a serious accident. Drove to nearest Chevy dealer (Everett Chevy Morganton NC), inspected, validated catastrophic transmission failure. Vehicle towed back to Hendrick Chevy Monroe NC. Hendrick confirmed catastrophic transmission failure, required complete transmission replacement. I requested failed part evaluation/warranty review. Escalated to Chevy customer support. Hendrick replaced transmission 1/29/2025. Hendrick upgraded to new Thermal Bypass Valve per service bulletin #21-NA-199 as part of complete transmission replacement. Vehicle was serviced previously on 11/1/2025 for routine oil change and inspection, with transmission noted as "good." Onstar monthly diagnostic for December 26, 2024 indicated engine and transmission system "good/OK".

Filed Jan 11, 2025 · Transmission · IL

What component or system failed or malfunctioned, and is it available for inspection upon request? The transmission failed due to transmission oil that went bad and subsequently damaged the transmission. The failed transmission is available for inspection upon request. How was your safety or the safety of others put at risk? The transmission failure created unsafe driving conditions by reducing vehicle control, particularly in situations requiring acceleration or deceleration. This could have resulted in a collision if the vehicle lost power while in motion. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the problem has been confirmed by an independent service center, which diagnosed the transmission failure as a result of degraded transmission oil. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives. It has only been inspected by an independent service center. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes, there were symptoms prior to the failure. These included occasional transmission slipping and delayed gear shifts, which began several months before the complete transmission failure. No warning lamps or dashboard messages appeared. This issue is of significant concern as the vehicle was purchased as a Certified Pre-Owned vehicle in 2022 and the transmission should not have failed this early. I am requesting an investigation into this issue to determine if it warrants a recall to prevent future safety risks for other drivers.

Filed Nov 21, 2024 · Transmission · VA

Car jerking and lurching forward in stop and go traffic. Mechanic confirmed transmission failure.