2023 CHEVROLET SUBURBAN Engine Problems

The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with a failed coolant control valve. The contact was informed that the coolant control valve needed to be replaced. The vehicle was not repaired. In addition, the contact referenced a Special Coverage Program: N252508341, however the VIN was not included. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. In addition, the contact was informed that the NHTSA could add the VIN to the special Coverage Program. The failure mileage was approximately 134,943.

Mileage: 134,943

After just getting our vehicle back on 12/11/25 from our incident on 11/9/25 when my wife was driving at 70 MPH on the highway when the engine blew the first time. Approximately 1300 miles later and 15 days after we picked up the vehicle when I was merging onto the highway the vehicle had a sudden power loss and a smell that filled the cabin. We were able to drive to the next exit and while the vehicle was idling it sounded awful. The check engine light started to flash along with the TCS light and the collision warning lights. After getting to a parking lot when called OnStar to tow our vehicle to the closest dealer. I have not received any updates yet but it is very similar to what happened the first time when the engine needed replaced.

My 2023 Chevrolet Suburban High Country (VIN: [XXX] ) suffered a sudden and dangerous engine failure while my wife was driving 70 mph on the interstate returning from our child’s sled hockey tournament in Ohio. The vehicle gave no warning lights, alerts, or diagnostic messages before the failure. While driving in the right lane, the vehicle began losing power and making a loud noise. My wife exited the highway and contacted OnStar, who told her the tow would take over an hour and only cover three miles to closest dealer, leaving her stranded in an unsafe area. She attempted to carefully reach a nearby dealership. During this attempt, the vehicle completely shut off and she lost all engine power. The vehicle lost all power making the final turn into the dealership coming to rest in the middle of oncoming traffic of a four lane road. The Suburban would not restart. A tow truck arrived and transported the vehicle to a dealership. When they arrived, the tow driver noticed smoke and a strong burning odor coming from the engine compartment and told her to move away from the vehicle because it could potentially catch fire. The vehicle was left in the lot with the hood open and positioned away from the building for safety. The dealership has determined the engine suffered a catastrophic failure and requires complete replacement. Multiple related components may also be affected. This occurred on a vehicle with only 54,000 miles that was purchased three months earlier. This incident created a serious safety risk for my wife, who was nearly stranded on an interstate and had to maneuver a powerless vehicle across several lanes of traffic. I am reporting this to NHTSA due to the sudden failure at highway speed, lack of warning, and potential fire hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving the vehicle and without warning it just stopped shut off and immediately shot an error code that there was a critical issue with the engine and that the oil pressure was low, and the vehicle would not start and was not drivable. It had to be towed to a dealership.

My 2023 Chevrolet Suburban with the 5.3L V8 engine has experienced lifter failure twice within less than [20,000 miles]. Both times the vehicle developed a misfire, engine belt like noise and was diagnosed by the Chevrolet dealership as having collapsed AFM/DFM lifters. All oil changes have been done at the dealership using GM-approved oil. The issue appears to be a known problem on 2021–2023 GM vehicles with the 5.3L L84 engine. GM has a technical service bulletin (PIP5776H) regarding lifter collapse, but no permanent fix has been provided. I am concerned this could lead to engine failure or stalling while driving, creating a safety hazard.

The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving at 10 MPH, there was an abnormal rumbling sound coming from the engine, with the check engine and traction control warning lights illuminated. Due to the failure, the contact restarted the vehicle and drove to an independent mechanic. The mechanic performed a diagnostic test on the vehicle and discovered a misfire in cylinder #3. The mechanic replaced the cylinder #3 ignition coil; however, the failure persisted. The contact then had another independent mechanic at the same shop inspect the vehicle, and the mechanic diagnosed the vehicle with engine failure. Neither the dealer nor the manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 52,000.

Mileage: 52,000

The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving approximately 30 MPH, the vehicle suddenly shut off without warning. After restarting the vehicle, the vehicle operated normally. The contact stated that the failure had occurred on several occasions. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not yet contacted. The failure mileage was approximately 20,000.

Mileage: 20,000

I am driving a 2023 Suburban Z71, continually on and of of the engine light and "reduction in acceleration, drive with care" this truck has the same issue and same engine as the recall, but is not included. Yesterday i was almost t boned at an intersection because the vehicle would not develop enough power to get across a street at a stop sign. one of the scariest and near disastrous occurrences of my life. this truck is deadly

What component or system failed or malfunctioned, and is it available for inspection upon request? - Initially, the vehicle began making loud 'clanking' sounds from the engine, which immediately affected the ability to drive the vehicle. Upon further inspection by a third-party mechanic, it was determined that the Crank Shaft had malfunctioned. This is a known recall for our vehicle type (model, year, engine), however, no recall notice has been received at this time. How was your safety or the safety of others put at risk? - The vehicle was slowing abruptly while in drive mode, potentially causing a vehicular accident. Has the problem been reproduced or confirmed by a dealer or independent service center? - Yes, we did not deliver the vehicle to a dealer, as no assistance was initially offered when we made an attempt to call and inquire. However, a third-party mechanic was able to determine the issue. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? - Not at this time, as the dealer we initially inquired with did not seem inclined to assist. We consulted with a third party. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? -No. Failure messages or icons came on after the engine failure began

Not sure the exact cause yet. But another big leak of coolant from the car. This is the 4th big problem with the same issue. I have been dealing with engine/radiator/coolant problems with this car since April 2024. It has been in the shop 2 separate times for 9 weeks total. With other visits in between. There is something wrong with this car.

Its been over a month and the dealership is unable to remedy this defect. I also called GM and they said the recall in incomplete and its in the preliminary stage. We are concerned that this is a serious safety recall and GM will not offer alternative solutions in a reasonable time.

Our Chevrolet suburban has 57,000 miles on it. We have started getting a check engine light and I’m getting code P1098 for the cooling control valve. This is a very common issue on these vehicles I’m noticing now. From what I’m reading in February of this year (2025) gm gave this issue an e code so these valves would no longer be covered pay the powertrain and they would now fall under emissions for a much shorter warranty coverage. This has been and ongoing issue since 2020. These valves are also commonly found to be on national back order causing long lead times and driving of the vehicles without properly functioning. GM knows these are and issue and shortening the warranty is not the fix. These vehicles weren’t bought with a short warranty and shouldn’t be able to be reduced to a short warranty.

Dealer attempting to sell 2023 Chevrolet Suburban with 6.2L engine and no corrective action under N252494000.

The contact owns a 2023 Chevrolet Suburban. The contact stated that while coming to a stop, the vehicle vibrated abnormally. Additionally, the contact stated that while driving at an undisclosed speed, the vehicle stalled with several unknown warning lights illuminated. The vehicle was able to be restarted. The vehicle was taken to the dealer, where it was diagnosed and determined that the cylinders and injectors had failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 33,190.

Mileage: 33,190

Check engine light came on Then : message saying power reduced. Then: Service transmission, unable to shift soon. While driving on the highway. Vehicle has been at dealership for a month with no idea on when parts will be available. They say they have no idea on when a valve body part will be available.

The engine stopped working. I was stranded on the highway and needed a tow. It was towed to a Chevrolet dealership in Alexandria MN, where it was diagnosed with a spun rear main bearing in the engine needed to be replaced. There were no warning lamps or anything prior to the engine completely shutting off and not being able to start again.

Coolant control valve failed. Reduced engine power, and engine fan on high.

Engine need replaced because the common lifters problem in 5.3L engine. It happens at 41k and now at 100,00k. Dealer don’t want to admit this safety issue and need to be investigated this is not acceptable.

Transmission valve control failed. Rear wheels locked up. Vehicle downshifted quickly. No injuries. Vehicle is at dealership for repairs. No warnings.

Lifters failed again for the second time. First time was at 41k miles fixed by dealer under warranty, it happened again today 05/02/2025 with 100k miles on the engine with ticking and cranking noises and being told it need an new engine. 5.3L suvs need to be investigated and be recalled for engine failure it is a common issue please help.

Brand new 2023 suburban radiator ruptured at 14,000 miles. Radiator and hoses replaced April 2024 and the car has ongoing issues since then. Most recently the car has a strong coolant smell and the dealership states they cannot find a leak or source of the smell. I have worked with 2 different dealerships on this matter. I was told that the radiator was a “poorly manufactured part” when it originally ruptured. No safety warnings ever appeared even when the oil was dripping out of the bottom after the original rupture. Oil and coolant had mixed in the coolant reservoir and no warning light ever signaled. The most recent coolant smell poses a safety risk to my families respiratory system as the manufacturer states they cannot find the source of the smell and have tried to return to vehicle to me twice with the strong odor coming out of the vents. We have had the coolant reservoir flushed several times as oil remains in their, hoses replaced, and ongoing service visits for a year for the same thing since the original rupture in April 2024.

Without warning my 2023 Chevy suburban started making a terrible noise, lost all power and died in the middle of the road. I was unable to restart the vehicle. It was towed to the nearest dealer 75 miles away and has been sitting there for 30 days with no idea when an engine will be available.

I’m filing this complaint regarding a serious safety concern with my 2023 Chevrolet Suburban. The vehicle is affected by NHTSA Recall 25V274 related to a potential defect in the crankshaft or connecting rods. GM has confirmed the recall, but there is currently no fix available, and dealerships are not equipped to inspect the engine to determine if it’s defective. This leaves us driving a vehicle with a known risk of sudden engine failure, especially at highway speeds or while towing. In addition, my vehicle is also experiencing a transmission issues and is expected to be in the shop for up to three months for repairs. The combination of an unresolved engine recall and a failing transmission makes this vehicle unsafe and unreliable. We are a family of six with four small children (two in car seats, two in boosters). We purchased this Suburban specifically for safety, towing capacity, and long-distance driving. Right now, we are left without a safe or functional vehicle. GM refuses to provide a comparable rental and has offered only $44/day, which doesn’t cover anything close to what we need. We’ve attempted to work through GM and our local dealership to resolve the issue, but we’ve been passed back and forth with no solution. I’m concerned that GM is knowingly allowing vehicles with unresolved safety defects to remain on the road with families inside them. I’m asking NHTSA to investigate the handling of this recall and the delays in the transmission repair that are putting families like mine at risk.

The 2023 suburban started shuttering on idle and loosing power on drive due to a misfire in bank 4, the fuel injector was changed, but the problem persisted. And now the dealer says that I need to change all 8 injectors. 2900 job on a car with 54000 miles. Crazy

The engine seized while I was driving. The dealer discovered a crack in the engine block, which caused the oil to leak out. Unfortunately, the warranty had expired at 60,000 miles. The dealer replaced the engine with a brand-new one. So, I had to cover the full repair cost of approximately $6,830.29 out of pocket.

I was driving my family to San Antonio for a vacation when the vehicle suddenly stopped working. The display read restart engine but the car just abruptly stopped and I was forced to pull to the side of the road. Once the car came to a complete stop the car shifted into park and could not shift out of park. The car would not start, display would read conditions not met? I had to have the car towed to the dealership. They are giving me a hard time.

My 6.2L V8 engine blew up while I was driving across bridge and I barely had enough time to get it off the road out of traffic.

Driving on the expressway my vehicle would not accelerate over 53mph. I then noticed the vehicle losing power where I then had to pull over onto the shoulder. The vehicle lost power and would not restart or go into neutral. Ultimately the vehicle had to be towed

My 2023 High Country Chevrolet Suburban's V8 6.2L engine failed 6 hours from home while our family was en route to Colorado. It was towed to the closest city and the dealership informed me the engines are on a nationwide backorder and it could be months before one is made available. The dealership stated that GM will not release information as to where the customer is on "the list" of recipients. My car has 44,000 miles and is well maintained. It has been in the shop for other repairs - suspension issues, tech package problems (wifi, onstar, google and navigation not working properly). Spoke with GM representative and was told if the engine makes it onto the recall list the repair will be expedited. Not sure how that is possible with so many engines failing. Maybe GM/Chevrolet will be forced to increase production.

6.2L L87 Engine Failure with 36,000 miles on it. While driving on the highway and attempting to pass another vehicle that was traveling on a 2-lane highway the car suddenly died, and the transmission shifted into neutral. When I noticed the vehicle would not accelerate, I looked down and saw the push to start warning and tried to restart the vehicle with no response. I had to allow the vehicle I was passing to get ahead of me before I could swap back into that lane to get out of the way of oncoming traffic eventually coasting onto the side of the road to a complete stop. The vehicle I was passing slowed down after the engine died not knowing what I was doing and drove right beside me blocking the lane until I signaled for them to go ahead so I could get back into the lane. If the vehicle in the oncoming lane had not slowed down to allow me time to get back into the proper lane a head on collision would have occurred. This 2023 vehicle was purchased used 14days prior from a GM certified dealership and had no warning lamps on the dash and showed no indication a failure was about to occur. The vehicle was driving perfectly normal until the failure occurred. Once the vehicle was towed to the dealership it was determined the engine had failed due to crankshaft bearings. The dealership explained there were no available replacement GM engines and could possibly be a lead time of 6 months before a replacement engine could arrive. I purchased the vehicle for $60,000 and the engine fails 14 days later and now I could be without a vehicle for 6 months and the dealership did not have any loaner vehicles available.

Middle of engine started making a tapping sound. Went to closest dealership service department. They said it was most likely an issue with the valve train but we should be able to get home. Within 10 miles, the engine completely seized up while on the highway loosing all power. Was able to get to the side of the highway. Towed the vehicle to the dealership that we bought from. They said it was going to need a new engine just as soon as they could find one.

Engine failed while driving on highway. Would not restart. Towed to Chevrolet dealer who determined engine full of metal debris requiring total engine replacement.

[XXX], driving on [XXX] at mile marker [XXX], 4 miles east of Moorcroft, Wyoming, the vehicle lost power and engine quit. We made it to the side of the road and vehicle would not start. The temperature was negative 5 degrees. With cell phone service, we were able to secure a ride and a towing company before we got extremely cold in the car. The vehicle was towed by Manning's Towing of Gillette, Wyoming to White's Frontier Motors, 444 Skyline Drive, Gillette, WY 82718. After 10 days in the shop, the service department diagnosed the engine was inoperable and the vehicle would need a new engine. There was no indication of the engine failure prior to its failure. To date I have had 15 communications with the service department at the dealership and GM Motors with no resolution or date of repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

In October 2024, the vehicle just shut off while we were driving down the road. Had to pull off to the side and got it going after about 5 minutes. Couldn't get the vehicle to replicate the problem so nothing chevy could do. No check engine light. No codes were given. On January 4th the vehicle started making a horrible noise. But then stopped making the noise on January 5th. Called Olympia, Washington Chevrolet to get it in to be looked at. Soonest appointment they had was February 5th. I made the appointment. February 11th, the engine seized and quick working completely. February 13th, had the vehicle towed to the nearest Chevrolet. Getting the vehicle into neutral and on the tow truck was terrifying. Makes me question the transmission. My vehicle has been at Chevrolet since January 13th. Today is March 11th. I do not feel safe driving this vehicle once it does get fixed. It has left me stranded twice. Once when it just shut off and another when it actually broke down for good.

I was on [XXX] in Athens, Ga. Going about 65mph in the left lane, casually passing a slow truck. it was rainy, in a construction zone, heavy traffic. With no warning lights or indication there was a problem the engine suddenly died and shifted itself into neutral. I had just started going up hill, no left lane median but I managed to barely make the right shoulder, when the vehicle came to a stop it shifted into Park, from that point forward the vehicle was locked down. I was so close to the traffic I had to fold the drivers mirror. I literally sat on the passenger side of the truck with my seat belt fastened because I expected to be hit. Took about 1.5 hours for tow truck. The tow truck driver was nearly hit trying to load the truck, several accidents were narrowly avoided by people trying to move over. Truck taken to Auto Gallery Chevrolet in Commerce GA, after three weeks they confirmed the engine had to be replaced and it would be done under warranty. I have not been told the exact nature of the failure, but they did confirm the engine could not be rotated. They could not tell me how long it would take to find and engine but there was another vehicle with the same issue that was ahead of me. To the best of by knowledge Chevrolet has accepted the failure report completed by the technician but have not otherwise engaged. I have not been provided any documentation from the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Without any warning driving 65 mph down a freeway the suburbans motor totally shut down. We had to cross over 2 lanes without getting hit by all the traffic. No dashboard lights ever came on until after we got onto the shoulder and sat there for an hour then the check engine light came on. We got stranded 2 hours from our vacation spot in AZ and now we’re stranded 1,600 miles from our home in MN. After 5 hours in the middle of the desert the tow truck finally showed up and towed the vehicle to Sands Dealership in Surprise AZ. We have never had any other problems before this happened. Never thought At 2023 vehicle with 30,000 miles would blow Motor. Waiting to hear from GM on what our options are to get it fixed and get us back home!

Traveling [XXX] on [XXX] through Pascagoula, Ms at approximately 70mph. The engine revved high then put itself into Neutral and shutdown. I was able to coast safely to the shoulder of the road. There had been no prior warning of potential problems. The vehicle engine seized up and could not be placed into neutral for the tow service to safely load it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was cruising at 45 - 50 mph and the vehicle went into NEUTRAL, shut off, would not restart, and would not shift into drive. I pulled into a Publix. I pressed the start /Stop button and the dash turned off. I turn pressed the brake and pressed the ignition button and the Suburban started up. Drove out of the parking lot and began accelerating when the vehicle shut off again. I could not restart the vehicle. I was able to coast into a gas station parking lot, but half of the vehicle was sticking out into the road. The vehicle would not go into neutral and would not start. The vehicle was towed to Palm Chevrolet in Ocala, Florida.

I was driving on [XXX] in rural Montana (zero cell phone coverage) on [XXX] (freezing weather, snow packed roads). Without warning the suburban just shut down. It seemed to still have "power". interior lights worked ect. but the engine just died. I tried to pull mostly off of the road but I couldn't get it entirely off of the road because of the snow pushed off of the road by snow plows. I tried to restart the vehicle several times but it would not turn over. I assumed it was an electrical issue at the time. There was zero warning that there was any engine issue. When a mechanic finally had the opportunity to look into the issue he told me the engine has seized up. I had to walk several miles in the cold hoping to get cell phone service to get to a place to warm up. I also couldn't get the vehicle off of the road and I was sure the vehicle was going to be hit or cause an accident on the narrow highway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Traveling at high speed on major highway and engine stopped. Unable to get car restarted and in fact the instrument panel and information center blanked out. Was forced to have vehicle towed approximately 60 miles to purchasing dealership for diagnosis. Dealer indicates engine is seized and will require replacement. Vehicle has had excellent, verifiable, maintenance record. We have owned this vehicle for approximately 18 months and currently has approximately 62,000 miles. Upon research, I have learned that our vehicle is not the only GM product to have this premature failure.

The contact owns a 2023 Chevrolet Suburban. The contact stated while driving 70 MPH, the message to "Please Restart Engine" was displayed before the vehicle stalled. The contact attempted to restart the vehicle, but the vehicle failed to restart. The contact coasted the vehicle off to the shoulder before the vehicle was towed to the local dealer. The vehicle was taken to a dealer where it was diagnosed with engine failure. The vehicle was not repaired and remained in the possession of the dealer. The manufacturer was notified of the failure but provided no assistance. The failure mileage was approximately 44,000.

Mileage: 44,000

The contact owns a 2023 Chevrolet Suburban. The contact stated while driving at approximately 70 MPH, the vehicle began to shake, fumes came out from the exhaust, and the check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with an engine lifter failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 100,000.

Mileage: 100,000

While driving the vehicle on an extended road trip trip on the interstate the vehicle randomly shut off while driving at highway speeds. When the vehicle turned off all interior and exterior lights did not work. The engine turned off. In order to begin driving again the vehicle needed to be restarted. This issue happened 3 separate times. In between, the vehicle has been turned off. It is a safety issue to have your vehicle turn off randomly while driving at any speed. The issue has not been reproduced by the dealer. The vehicle has been seen by the dealer and stated "they are unable to find any issue" There was not indication before or after the 3 events that would indicate issue.

The contact owns a 2023 Chevrolet Suburban. The contact stated while driving at an undisclosed speed, the vehicle experienced phantom braking. Additionally, the windshield wipers were inoperable. On another occasion, while driving at approximately 70 MPH, the vehicle experienced phantom braking. There was no warning light illuminated. The vehicle was taken to the local dealer, where it was diagnosed that there was a loss of communication with the control module, steering, gateway module, engine, body control module, and brakes. The dealer retrieved DTC codes: U0101, U0131, U0146, U152B, U160F, and U1561. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 15,000.

Mileage: 15,000

Driving the vehicle on an interstate highway with the flow of traffic at 70 mph, without warning the engine shut off. This caused loss of speed and loss of power steering, almost causing me to be hit in the rear end twice at highway speeds. There were no warning lights or any instrument indication prior to the failure. After barely being able to get the vehicle into the brakedown lane, the vehicle would not restart. The electronics all worked, there were no warnings or indicator lights but the engine would not start despite multiple attempts by myself and the tow truck driver. The vehicle is currently at the dealership being diagnosed.

The car shifted into neutral while I was driving. I was slowing down to stop at a traffic light when it happened.