2023 Chevrolet Tahoe transmission problems

POWER TRAIN

I have a 2023 Chevy Tahoe with 45k miles. Today driving two kids home from our football practice I was driving along at around 40mph and all of a sudden the transmission downshifted and almost locked the rear tires up. If it was winter, wet, or cool, there is no doubt that the tires would have locked up. Check engine light came on, and now the vehicle wont move in reverse and at around 45-50 mph the engine is running at 3,000 rpms. I volunteer to be a youth football coach and always have a car full of children. This isn't normal or safe. P.s. I should've bought the Ford Expedition.

NHTSA complaint #11755139 — an unverified report by a vehicle owner.

POWER TRAIN

While traveling out of town on the highway,we had a sudden loss of power. My vehicle wouldn’t accelerate or shift. My check engine light came on and a message displayed that said something about reduced power. After limping to a dealership while in another city, I managed to wait hours for my husband to pick me and my children up. We waited several days for the dealership to tell us it was the valve body that needed replaced. My vehicle was NOT in the original recall for the valve body, although we experienced the exact same issues that the recalled vehicles experienced. This entire experience was horrifying. Along a stretch of highway that I was unfamiliar with, speed limits of 80mph, and a sudden, complete loss of motor power and speed, this could have someone. I had a vibration while staying at any constant speed for months prior to this, I had taken the vehicle in numerous times but was told the only thing to fix it was a software repair and that wouldn’t take care of the problem entirely. This vibration was and still is so bad that my phone will fall from the magnetic mount if I don’t let off the accelerator or increase acceleration. My vehicle still doesn’t seem to run properly but I am unable to get it to reproduce any issues when at the dealership. Extremely unnerving to travel with my family out of town or state and wonder if my fairly new vehicle will make it.

NHTSA complaint #11751779 — an unverified report by a vehicle owner.

POWER TRAIN

Rear wheels suddenly lock up momentarily during downshift at 30-50 mph (most reproducible 35-40). Transmission in a high gear (8th-10th); any throttle input commanding a downshift can trigger it: as the downshift executes, rear wheels briefly stop, skid with an audible chirp, vehicle jerks violently. Reproducible on demand, multiple times per drive, on video. Highest-speed event ~50 mph, family aboard. NO advance warning: no check engine light, no message, no stored code, no gradual onset. Traction control sometimes activates at the instant of the skid, sometimes not — always reacting to traction already lost, never before. A driver has no opportunity to anticipate or react. THIS IS A LOSS-OF-CONTROL HAZARD. It is especially dangerous in a turn, on wet pavement, or in traffic. Onset May 2026. Pursued repair since, across three shops: an independent, twice (no codes/leaks/abnormal findings; MAF replaced; unresolved; referred to dealer), then a GM dealer 3 days (test drove 34+ miles, no codes, fluid good, all shifts correct; declined recommended control-module recalibration, cause unconfirmed). Lockup recurred within 5 miles of leaving, same day; I returned immediately, asked for a tech ride-along while fresh — did not occur. Next day, a second GM dealer: tech note said fluid was low, though the same RO's inspection passed that fluid and found no leak; no leak ever identified anywhere. Paid $672 for a fluid exchange — unresolved. Days later, same dealer measured 265F on a 30-mile road test and condemned the transmission. Full replacement underway, largely out of pocket. Symptom matches recall 26V-085 (momentary rear wheel lockup, worn control valve, 10-speed/ETRS) covering 2022 models. My 2023 is not included. I am not asserting a diagnosis — no one has established the cause — but I ask ODI to consider whether that campaign should include additional model years. The failed transmission is available for inspection; videos available on request.

NHTSA complaint #11751780 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated that while driving at 40 MPH, a warning message advising to reduce acceleration was displayed, the Check Engine warning light illuminated, and the vehicle stalled. The contact was able to pull over safely. The contact stated that the failure was recurrent. The dealer was notified of the failure and diagnosed the vehicle with a valve failure. No further information was available. The manufacturer was notified of the failure. The failure mileage was approximately 57,000.

NHTSA complaint #11743755 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated that while driving at 75 MPH, the vehicle shut off without warning. Due to the failure, the contact used excessive force to steer the vehicle off to the shoulder of the highway where the vehicle was then towed to a dealer. After the vehicle remained in the dealer's possession for over a week, the vehicle was diagnosed with an engine failure. The contact was then informed that the vehicle was placed under recall NHTSA Campaign Number: 25V274000 (Engine) and that the engine would be replaced. Despite the engine repair, the contact stated that an abnormal, rattling sound would emit from the vehicle upon start of the engine. In addition, the contact stated that the vehicle would violently jerk upon depression of the accelerator pedal while at a complete stop. The failure started intermittently; however, the contact stated that overtime the failure became more persistent. The vehicle was taken to the dealer where they claimed that the transmission was four quarts low on transmission fluid; they then informed the contact that they could not guarantee that remedy would repair the failure. The contact stated that failure improved; however, she would still experience a slight hesitation upon depression of the accelerator pedal. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 39,000.

NHTSA complaint #11737295 — an unverified report by a vehicle owner.

POWER TRAIN

Engine stopped while driving 70 mph down the highway and the car shifted into neutral. Had to cost to side of the road. Took car into dealership and even though the car was certified safe drive and the engine had no issues 5 months ago, I was told the engine was now locking up. The engine failed despite using the higher viscosity oil that chevy recommended. These greedy cunts at chevy placed me and my family's lives in danger to save a buck; they knew that the engines would fail and instead of replacing the engines, they put thicker oil in the cars to hopefully get the cars past warranty.

NHTSA complaint #11734750 — an unverified report by a vehicle owner.

POWER TRAIN

Transmission has had a failure to shift problem on several occasions resulting in deceleration and a decreased ability to accelerate. This has occurred on most occasions at highway speeds while passing a vehicle causing a very unsafe condition. Dealer has evaluated and determined the transmission valve body is defective and needs replaced. Upon researching the problem, many similar GM vehicles are experiencing the same issue

NHTSA complaint #11734300 — an unverified report by a vehicle owner.

POWER TRAIN

The engine randomly shut off while driving down the interstate and wouldn’t start back up. The car had the recall “remedy” done to it. Inspection and thicker oil. The only warning I got was to restart the engine after it shut off. My safety was compromised by breaking down on a main interstate coming through Memphis with no emergency lane to pull over in.

NHTSA complaint #11733812 — an unverified report by a vehicle owner.

POWER TRAIN

At less than 50,000 miles, my alternator went out and had to be replaced, causing the battery to need to be replaced also. Now, at only 51,000 miles, my transmission is having problems and causing the vehicle to jerk when shifting. This vehicle has had regular maintenance performed by a combination of dealers and certified service centers since it was purchased brand new. I have never had this much trouble with a vehicle and am very concerned about it's overall safety and integrity, given the severity of the problems for something that is not old and does not have high mileage.

NHTSA complaint #11729681 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated that while driving 50 MPH, the transmission unexpectedly downshifted before the engine seized. The check engine warning light was illuminated, and the reverse(R) indicator was flashing. The contact was unable to restart the vehicle. The semi-truck behind the vehicle almost crashed into the rear of the vehicle. After several minutes, the contact was able to restart the vehicle; however, the failure reoccurred. The check engine warning light illuminated, and the reverse(R) indicator light was flashing. The contact was able to restart the vehicle and pulled over to the side of the road. The vehicle failed to accelerate 5 MPH. The contact drove back to the residence slowly. The contact arrived at the residence, and the vehicle failed to shift into reverse(R). The vehicle was towed to the dealer. The vehicle remained at the dealer unrepaired. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.

NHTSA complaint #11725684 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) in November 2025 by the local dealer. The contact stated that the engine had passed the inspection, and a higher viscosity oil had been added along with the other steps stated in the recall. The contact stated that while driving approximately 55 MPH, the accelerator pedal was depressed; however, the vehicle failed to respond. The gear shift indicator indicated that the transmission had been shifted into neutral(N). The contact attempted to shift to drive(D) when the vehicle stalled. The vehicle was stopped but was unable to restart the vehicle. The vehicle was towed to the same dealer who had completed the recall repair. The dealer diagnosed the vehicle and determined that the engine, starter, radiator, and fuse block needed to be replaced. The vehicle was being repaired. The manufacturer was informed of the failure and a complaint was filed. The failure mileage was approximately 48,000.

NHTSA complaint #11720668 — an unverified report by a vehicle owner.

POWER TRAIN

Truck bucked twice in high-speed lane of the highway, gas pedal went soft and we luckily were able to coast the truck to the side of the highway without getting hit. The truck put itself in neutral when we lost the engine and the truck would not restart. It had to be towed, while me and my two kids stood on the side of a dangerous highway for 45 minutes in the snow. The truck has 52,000 miles, Engine was already replaced at 10,000 miles. It just passed the recall inspection and had the upgraded oil that was recommended.

NHTSA complaint #11711945 — an unverified report by a vehicle owner.

POWER TRAIN

I asked the dealer for information about the L87 6.2L engine rod bearing failure recall. I was told that they wouldnt perform the work until i recieved a letter from GM. This was when i got my first oil change. Then every oil change after that i asked the same question. At 43401 miles i parked the vehicle and havent driven it since. I am afraid to have something happen to me or my family. I paid $82,000.00 for a vehicle that GM's fix is to add thicker oil. I think that the rods and bearings should at least be visually inspected. The dealers maintenance manager at Kunes Lake Geneva says theyll listen to it with a stethescope. If it sounds ok theyll change the oil. I paid way to much to chance my familys safety on thicker oil. To make the situation better the vehicle blue books for $56,000.00 IT DEPRECIATED $26000.00 IN TWO YEARS. That is unacceptable.

NHTSA complaint #11707716 — an unverified report by a vehicle owner.

POWER TRAIN

2nd Powertrain failure in 4 months in 2023 Tahoe with 6.2L engine. The first being the Camshaft and lifters failing at highway speeds, which was repaired. The second issue the engine seized while on a tollway going approx 70 MPH with my spouse, children, and family in the vehicle. We were able to coast to the shoulder while waiting on a tow truck. Because of the engine being seized, the Tahoe is waiting on the engine to be replaced. While we wait, we were told they have no loaner vehicles and there are no GM rental vehicles available with who they contract through. Having a 2023 leased vehicle fail twice in 4 months with children in the vehicle is unacceptable and brings to question the safety and reliability of the vehicle moving foreward.

NHTSA complaint #11696297 — an unverified report by a vehicle owner.

POWER TRAIN

I was driving on an interstate when the vehicle check engine light came on and it went into limp mode causing the vehicle to go into low speed in the middle of traffic. Check engine light code P0747

NHTSA complaint #11694402 — an unverified report by a vehicle owner.

POWER TRAIN

While traveling on [XXX] approximately 20 miles west of Rawlins WY the vehicle entered “limp mode” causing us to drive at an unsafe slow speed. The transmission caused a check engine light to activate which was confirmed by a service technician in Rawlins with a PO747 code show on his OBD2 scanner. The problem was confirmed by the servicing dealer in Lincoln NE. The transmission was inspected by the servicing dealer. They replaced the valve body and fasteners approximately 1 1/2 months later. The problem first occurred at the time of the incident and I had no prior warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11688021 — an unverified report by a vehicle owner.

POWER TRAIN

Torque converter needed to be replaced, and then a week later still had the same shuttering and loss of power and the valve body needed to be replaced. Got it back and it still is shuddering and hard shifting.

NHTSA complaint #11682088 — an unverified report by a vehicle owner.

POWER TRAIN

Our 2023 3L diesel Tahoe had 63,000 miles on it and went into limp mode (CEL on) in late April 2025. We took it to the dealership and they diagnosed the valve body as the problem. We continued to drive it (as they mentioned it would be months before a replacement part would be in) while I did some research and discovered the magnitude of the problem. Just google it! Meanwhile, the rear wheels locked up on me after I had picked up our two children from daycare. It felt like we had a log chain hooked to our hitch that snapped us back - really hard! Felt like we had been rear-ended. This could have easily caused us to get in an accident, or worse, but thankfully we were not in heavy traffic. Our dealership was able to provide us a loaner truck. Approx. 50 days later, we were informed that we were approved for a new transmission - which was also on backorder! Almost 80 days later, our new transmission has arrived and been installed. We are very disappointed with how GM has handled the issue. We were lucky our dealer provided a loaner, as many have not. There are after-market providers who clearly state the upgrades they've made to the valves bodies, and while GM says they've upgraded the ones they make now, they won't share any details. I'm aware of this same limp mode/rear wheel lock up happening multiple times (on the same vehicle) to people in very low-mileage vehicles (less than 1000 miles). This isn't a small problem, and GM knows it. We will see how far we get with this "new" transmission, but as you could guess, I don't have high hopes! I just pray that no one gets killed.

NHTSA complaint #11674252 — an unverified report by a vehicle owner.

POWER TRAIN

Engine light came on. Flagged for a bad transmission valve body. Informed by dealership that the piece is on backorder and has been on back order for months.

NHTSA complaint #11672560 — an unverified report by a vehicle owner.

POWER TRAIN

Transmission issue. Vehicle has the Duramax Diesel with 10-speed transmission. I am aware of issues with earlier year/s transmissions. I have experienced shuddering, jerking, a SINGLE momentary rear axle lockup. Jerky engagement from drive to reverse and or back. Reduced Acceleration warning on display. Check engine light comes and goes. Waiting for dealer to further inspect, drain fluid, etc. It appears from the VIN check that this vehicle had some metal work/paint prior to delivery to selling dealer, paint does not match. The transmission issue at 15,000 miles is just plain scary and not what one expects. That this vehicle sold as a 2023 has same issues as earlier model years makes me wonder if this is in fact a late 2022 model with the known defective transmission valve body? Any help appreciated.

NHTSA complaint #11671104 — an unverified report by a vehicle owner.

POWER TRAIN

While traveling on the highway, the vehicle suddenly lost all power. The gas pedal became unresponsive, and the engine ceased functioning entirely—without any prior warning or indicators. I was forced to coast into a nearby parking lot to prevent a potential collision. This incident put both myself and my child at serious risk of injury or worse, had it occurred at a higher speed or in heavier traffic. Once stopped, the vehicle would not restart. I had no choice but to have it towed to the dealership for evaluation. A week later, the dealership diagnosed the issue as a locked-up engine, confirming that a full engine replacement is necessary. Unfortunately, the replacement engine is currently on backorder, and they are unable to provide an estimated time of arrival. To make matters worse, the dealership has no loaner vehicles available for at least a month. GM only offers a rental reimbursement of $44 per day, which is significantly below the cost of even a basic rental vehicle in our area ($74/day). This leaves me with limited transportation options, even though I am currently making monthly payments of over $1,400 on a vehicle that is completely unusable. Adding to the severity of this situation, the vehicle is also subject to a manufacturer recall, but no remedy or parts are currently available to resolve the issue. As a parent of multiple children, this entire experience has left me shaken. I cannot begin to imagine the consequences had this failure happened at a higher speed or in less forgiving conditions. I am extremely concerned for my family’s safety going forward. GM has stated they will not extend or provide additional warranty coverage until the repair is complete, which leaves me feeling unprotected and anxious about the future reliability of this vehicle. The absence of warning signs and the total loss of power while driving make this a critical safety concern that must be addressed. I urge NHTSA to hold the manufacturer accountable.

NHTSA complaint #11669503 — an unverified report by a vehicle owner.

POWER TRAIN

I noticed the gears of my Tahoe grinding when I would let off of the gas pedal. Eventually my check engine line came on. I brought it to my Chevy dealership. Upon inspection, I was told that my transmission valve body was bad and that I needed a new one. I was then told that my truck was ok to drive. I drove it for roughly another month until the check engine light came on again, and I heard the same sounds (I was able to catch it on video). This time, my truck would not want to accelerate past about 1.5 RPMs. I brought it back to the Chevy dealership which is where my truck is today. In hindsight, I believe I should not have been allowed to continue to drive my truck with a bad transmission part.

NHTSA complaint #11668589 — an unverified report by a vehicle owner.

POWER TRAIN

My 2023 Tahoe with 76,000 miles went into limp mode and activated an engine light. The vehicle was taken to the dealership and had the code P0747 which is pressure control solenoid A is stuck on. The dealership technician is recommending a valve body replacement to repair this problem. This is a known problem by General Motors and has extended it to the 2022 models only. This is a safety concern that is causing rough irregular shifting, and a engine light to occur.

NHTSA complaint #11662302 — an unverified report by a vehicle owner.

POWER TRAIN

Vehicle down shifted hard and dash board lit up. Wouldn’t shift any higher than 4th or 5th gear. Fortunately we were only going about 35mph. If we would have been on the interstate as we had been the 2 previous days on our trip to Florida it could have been deadly. Brought the Tahoe to Ron Anderson GMC Chevrolet in Yulee, Florida on 3/18/25. The transmission valve body is the problem. As of today 4/11/25 we haven’t heard another word and returned home to Michigan 3 weeks ago.

NHTSA complaint #11660279 — an unverified report by a vehicle owner.

POWER TRAIN

I filled my car up with gas and turned it on and it started shaking. Several warnings popped up on the dashboard screen including, Service ESC, Service traction control, And forward collision system unavailable. My cruise control was disabled I had to hold my foot at an angle to keep the speed at 45-50 mph, Causing it to take 10 hours for me to get home from Austin to Dallas. The check engine light was on the entire time and flashed for the last hour to hour and a half. I was unable to pull over at that time because it was dark And I was in the middle of nowhere by myself. The next day I turned my car on.The only thing on was the check engine light, Is , however , around 1 pm that day it Started doing the same thing. I drove it from My patient's house in allen To galleria chevrolet in Dallas. They told me my battery was too low to run diagnostics and I needed to replace it. So I bought a battery and brought it to them. They replaced the Next morning And told me there were no codes showing up so There was nothing wrong with my car and it was a fluke. Exactly one week later the same thing happened to my car. I called the dealership and they Hao it toewd to the service dept. After I repeatedly called them to check on the status of my car, they told me it was the fuel injector #1. They then were able to apply for a loaner car for me as I am a hospice nurse. These are same exact issues that the GM 6.2 L engines are having with the recall they just announced. I have a 5.3 L engine. I am afraid to put my kids in my car. Please help get GM to take responsibility for this!

NHTSA complaint #11658044 — an unverified report by a vehicle owner.

POWER TRAIN

The vehicle’s transmission began slipping at low speeds with less than 40000 miles. I took it to the dealership for diagnostic testing and the requested that I do “maintenance transmission fluid replacement” as well as some additional reprogramming which the dealer also deemed as maintenance. However, the required transmission fluid replacement was not required until 45000 miles and the reprogramming is not listed anywhere in the maintenance plan.

NHTSA complaint #11655979 — an unverified report by a vehicle owner.

POWER TRAIN

While driving and accelerating the transmission malfunctions and wont shift so as I try to accelerate the car stops accelerating and just goes very slow. This put us at risk as cars were coming fast behind us. The problem happened 3 times before taking it to the dealership where they knew exactly what the problem was because it has happened to so many others. The warning light that came on was the engine light and a message that read "Reduced Acceleration Drive with Care"

NHTSA complaint #11655301 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving approximately 60 MPH, the vehicle suddenly decelerated to 5 MPH. The message "Deceleration - Warning" was displayed. The contact was able to pull over to the side of the road. The contact turned off and restarted the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the transmission valve had failed and needed to be replaced; however, the part was not available to repair the vehicle. The dealer advised the contact that the vehicle was unsafe to drive. The vehicle was not repaired and remained at the dealer for more than two months. The manufacturer was notified of the failure and confirmed that the part was not available. The failure mileage was approximately 35,000.

NHTSA complaint #11654918 — an unverified report by a vehicle owner.

POWER TRAIN

Engine replacement at 13,260 miles due to thrown rods in cylinders 7 and 8 in September 2023. The vehicle is currently at the dealership again at 32,000 miles due to transmission issues. No ETA on replacement parts. Up to date on all maintenance and oil changes.

NHTSA complaint #11654591 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving 25 MPH, the transmission unexpectedly downshifted with the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission valve body had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 30,000.

NHTSA complaint #11653926 — an unverified report by a vehicle owner.