*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Power train
My 2023 Chevrolet Suburban RST equipped with the 6.2L V8 engine has developed serious transmission and drivetrain issues following an engine replacement performed under a GM recall approximately one year ago. Shortly after the engine replacement, the transmission began exhibiting unusual shifting behavior. The dealership advised that the transmission needed to reset or relearn its shifting patterns. However, approximately 10,000 miles later, the problems have continued and become increasingly concerning.The vehicle now shifts extremely hard when engaging Drive or Reverse and experiences harsh, abrupt shifts while driving. More concerning, the rear wheels have appeared to lock up…
Oct 1, 2026Vehicle speed control
As I was driving on the Highway. My speed was approximately 65 MPH. The suburban slowed itself down and flashed on the driver screen "slow down/reduced acceleration". I was driving with my family in the car on the highway. The car forcing a slow down like that could have caused an accident that could have killed my 3 year old or my 9 year old. We drove the car home in fear after reading online that the rear tires could force stop on us. We immediately did an at home diagnostic on the vehicle and were given the following codes: P0700, P0747. We have taken the vehicle to the nearest Chevrolet Dealership and had it diagnosed. We were called today and told that the valve body needs replacement.…
Oct 11, 2026Engine
I was driving south on Highway 395 with 2 of my friends on our way home from vacation, which is a 2 lane road in the mountains. About 45 miles north of Victorville, CA. As I was accelerating, my vehicle all of a sudden dropped adaptive cruise control, the engine light started blinking, traction control errored, and I got a service ESC message on the dash. I let off the gas a little and everything seemed fine but when I reapplied pressure to the gas pedal the engine started making a loud ticking sound and had barely any propulsion. I had to keep going and was luckily able to find a safe place to pull off the road (which had many blind curves and minimal shoulder space along the highway). Had…
Oct 12, 2026Power train
Transmission / Electronic Shifter Control While attempting to operate my 2023 Chevrolet Suburban, the vehicle suddenly suffered a complete transmission shift lockout, displaying a critical driver alert on the dashboard stating: "Conditions Not Correct for Shifting." The vehicle actively blocked and refused engagement into Reverse gear. A diagnostic scan revealed (P0776) transmission solenoid and hydraulic control codes, and the Chevrolet owner's application triggered a "Service Engine/Transmission" warning. This issue is identical to the widespread, known manufacturing defect involving premature wear of the 10-speed transmission control valve body. General Motors has already acknowledged…
Oct 11, 2026Engine
Tuesday October 6th, 2026, I dropped my 2 children off at school and was driving on the highway to work through heavy traffic when I had a suddenly loud knocking coming from my car, transmission not wanting to shift properly, high rpmâs for extended periods of time. I was able to safely make it to the dealership with about 10 minutes, where it was determined L87 engine failure had occurred. I am sickened that this vehicle is advertised as a family vehicle, knowing the engine failure issues!
Oct 6, 2026Engine
2023 Chevrolet Suburban, 6.2L L87, included in Recall 25V-274 and NHTSA EA26005. Recall service was performed XXX at 20,259 miles; the engine passed inspection and received the 0W-40 oil remedy. I noticed that the oil level was low after the dealer had serviced the engine so I topped it off. At the next oil change, at 26,297 miles, I observed a metallic sheen in the drained oil and found significant metal debris in the oil filter installed during the recall service. I captured and retained all the oil removed, 8 quarts were captured so there is no evidence of oil consumption. On XXX, at 26,505 miles, I presented the cut-open filter to the dealer (Burns Chevrolet, [XXX]). It was not…
Oct 2, 2026Electrical system
While driving, the digital driver/instrument display behind the steering wheel went completely black, but the engine continued running and the radio remained on. The vehicle was stopped, turned off and restarted and the display screen came back on. This didn't effect the drivability of the vehicle. In some of the research I've found the cause might be an instrument-cluster software problem or an "Instrument Cluster Missing Graphics Processor". The recommended remedy would be to replace the instrument cluster. There is also one instance where the dealer reportedly determined that the instrument panel control module needed to be reset versus repaired which would not permanently resolve the…
Sep 17, 2026Engine
The contact owns a 2023 Chevrolet Suburban. While the contactâs husband was driving 70-75 MPH and depressing the accelerator pedal, the vehicle failed to respond, but the RPMs became elevated. The driver shifted transmission into neutral(N), coasted to the side of the road, and the vehicle stalled. A message to âStart Vehicleâ was displayed; however, while on the side of the road, the vehicle failed to turn off. The driver was able to shift into park(P) and had the vehicle towed to the dealer, where the transmission failed to shift out of park(P). The dealer determined that a spark plug was burned. The spark plug was replaced; however, before returning the vehicle, the new spark plug…
Sep 13, 2024 · 42,600 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.