Engine And Engine Cooling Problems of Chevrolet Suburban - part 1

Odometer fraud. The contact purchased a 2010 Chevrolet Suburban. The contact stated that while driving approximately 55 mph, the vehicle suddenly stalled. The vehicle was restarted and driven; however, approximately one minute later, the failure reoccurred. The vehicle was restarted and driven to a nearby parking lot. A certified mechanic arrived and inspected the vehicle. The mechanic diagnosed the vehicle with rod bearing failure, which caused damage to the engine. The vehicle was driven to the residence, and the contact was advised not to drive the vehicle to prevent a blown engine. The vehicle was not repaired. After the failure, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale on July 30, 2025. At the time of purchase, the mileage was approximately 180,000. The odometer indicated that the current mileage was 193,000. After researching the information on infotracer. Com, the contact discovered that on July 1st, 2001, the mileage was documented as 242,765. The manufacturer was not informed of the failure.

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Two years ago, we had to have the transmission rebuilt after it kept slipping. Yesterday, as I was driving on I-95, I was passing a vehicle and pressed on the gas. There was a loud crunching noise and I lost acceleration. The check engine light came on right away and I couldn’t press on the gas without a noise and limited forward momentum. I then had to maneuver the car across four lanes of traffic with limited control over speed. There was no warnings an issue was going to occur. We had it towed to our mechanic who said there was low compression in cylinder 1. Less than 90 psi. Again, we had already had the transmission replaced and now this major engine issue. We are in the process of getting it to a chevy dealer.

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Camshaft failure cylinder 7.

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On Friday, March 13, 2026, while traveling at approximately 60 mph on the highway, my 2021 Chevrolet Suburban equipped with an l87 6. 2l v8 engine experienced a sudden and complete loss of motive power. The failure sequence began with a dashboard warning prompting me to "press the start button again," followed immediately by the vehicle shifting into neutral without any driver input. Despite repeatedly pressing the accelerator, the vehicle continued to decelerate and could not re-engage drive. A second dashboard warning displaying "engine recall" then appeared mid-incident. Subsequently, the rear wheels locked, forcing the vehicle to coast to a complete stop on the hard shoulder without any brake input required from the driver. Upon coming to a full stop, the start button continued flashing with repeated prompts to press it, the vehicle lock emblem illuminated on the dashboard, and the vehicle became fully and mechanically immobile, unable to shift out of neutral or transition into any other gear. The engine could not power the vehicle at all. My safety and the safety of other motorists were directly and seriously endangered, as the failure occurred without warning in the middle lane of an active highway at highway speed, leaving the vehicle unable to maneuver or accelerate out of harm's way. A responding police officer confirmed the road hazard on scene and remained present to protect the vehicle and occupants while we awaited assistance. The aaa tow truck operator independently concurred upon arrival. The vehicle was transported to classic Chevrolet, grapevine, TX, the same day and is currently awaiting full technical inspection by the dealership's service team; an official mechanical diagnosis remains pending. The dealership service advisor has verbally confirmed awareness of an active engine and powertrain/transmission recall affecting this vehicle. The failed component — the l87 6. 2l v8 engine and associated drivetrain — is available for inspection.

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My 2021 Chevrolet Suburban experienced a sudden and complete engine failure at approximately 79,000 miles. The vehicle became inoperable and is currently at a dealership pending evaluation. There were no prior warnings indicating an imminent catastrophic failure. A sudden engine failure of this nature presents a significant safety concern, including the risk of loss of propulsion during operation. The failure has been confirmed by the dealership, and no repairs have been authorized at this time pending further review. This complaint is being submitted to document a sudden and severe engine failure and to request evaluation of potential safety-related defects involving internal engine components.

While driving home from costco with my entire family in the vehicle (4 children and my pregnant wife), I noticed the engine misfiring while traveling on interstate 80 and mentioned to my wife that something felt off with the vehicle. After exiting I-80 onto route 46 east at the denville exit, the truck reached the first traffic light where the vehicle rumbled violently, shook, and completely shut off. The engine would not restart. Dashboard lights illuminated but the engine would not turn over, and the hazard lights would not activate. This created a dangerous roadside situation with traffic approaching from behind at approximately 50 mph. I exited the vehicle and stood in the roadway directing traffic to prevent an accident while my wife attempted to restart the vehicle and called 911. Police arrived and a tow truck was dispatched. The tow truck driver attempted to jump start the vehicle, but it would not start. The vehicle had to be winched onto a flatbed tow truck.

I purchased a 2023 Suburban on March 6, 2026 with 52,980 miles. I drove it home to my house and parked it. On March 7, 2026 about 6pm, I started the vehicle and heard a loud engine noise. I called the dealership and let them know about the noise. On March 9, 2026 I towed it back to the dealership. The vehicle has been in service since then and was told it needs an engine. Metal spun threw the engine block and has to replaced. I just purchased this vehicle and drove it one day.

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The contact owns a 2022 Chevrolet Suburban. The contact stated that while driving 50 mph, the transmission unexpectedly shifted to neutral(n) and the vehicle shut off. The driver was able to coast safely to the side of the road. The vehicle failed to restart. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was determined that the engine needed to be rebuilt or replaced. The vehicle was not repaired. The vehicle was previously taken to the same dealer for a prior recall repair. The dealer had provided a loaner vehicle. The manufacturer was not notified of the failure. The failure mileage was approximately 58,166.

The contact owns a 2022 Chevrolet Suburban. The contact stated that while changing the oil and filter, there were metal shavings found in the oil filter. The vehicle was not taken to the dealer; however, the dealer was notified of the failure over the phone. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 115,000.

Vehicle accelerated while driving. The rpms gage turned red; however, the vehicle stopped in the middle of the road with other cars coming. After the vehicle came to a full stop it would not move. Finally it started moving slowly and I was able to get off the road. When the tow truck arrived the vehicle would only go forward. No reverse. Error message on dashboard picture attached.

Complete and sudden failure of the l87 v8 engine at 70 mph on the highway. Had to maneuver to the right shoulder and coast to a stop. Engine was seized and would not restart. Waited 4 hours on a dangerous highway for a tow truck which took the chevy Suburban 200 miles to my home Chevrolet dealership. They have ordered a new engine but it is on backorder so no eta. Vehicle was built 06-26-2024 and has not been recalled so chevy says I do not get the extended warranty on the replacement engine.

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I have read reports online of the two thousand sixteen chevy Suburban turning off completely while driving. I have experienced this not once not twice. But three times now, with my chevy, Suburban. This is a severe safety issue and can lead to death or major financial loss.

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On February 21st at approximately 9:30 am, I was driving my brand-new 2026 chevy Suburban high country when I began hearing an unusual noise from the engine. There were zero dashboard warnings — no check engine light, no alerts, nothing indicating a failure. Out of caution, I immediately headed to the dealership so they could inspect it. I was driving slowly and carefully when, without any warning whatsoever, the engine suddenly and completely seized. The vehicle locked up abruptly. I barely had enough time to try to move toward the shoulder, and I was unable to fully clear the roadway — the rear half of the vehicle remained partially in traffic. It was an extremely dangerous situation. What is especially alarming is that I was not on the highway at the time. Had this occurred while traveling 80–85 mph on sh-130 in texas — which is a normal speed limit there — the outcome could have been catastrophic. A complete engine seizure at highway speeds could have caused a major accident involving multiple vehicles. Even more concerning, my Chevrolet app (connected through onstar) still shows no issues or alerts with the vehicle. The attached pictures are from the my Chevrolet app on Sunday, 02/22/2026, around 11:13 am. This is a brand-new vehicle, and I was informed yesterday that the dealership has requested a full engine replacement. I have no timeline for the repair. For a vehicle of this price point, a sudden engine seizure with zero warnings is deeply concerning from both a safety and reliability standpoint.

In April of 2022 with 26k miles my vehicle had its first engine failure, Chevrolet dealership had to replace engine lifters due to a known engineering defect with the 2021 6. 2 l87 engine. Now in late February 2026 with 80k miles my engine has locked up and requires a brand new engine replacement. For some reason, even though this is a l87 6. 2l 2021 engine it is not part of the broader recall for this exact same engine failure for the same engine year and model.

The check engine and traction control light came on in my car. This was accompanied by a clanking sound, shaking. The panel said “ service esc” “ service traction control” and “ forward collision system unavailable” the Chevrolet light logo on the back of my car will also not turn off occasionally whenever the car is turned off.

Engine locked up going 75mph on highway. The vehicle's 6. 2l v8 engine was recalled in 2025. Result of recall inspection was to change oil type to 0w-40. The vehicle is in the process of being inspected by dealer.

Regarding a catastrophic engine failure involving my 2023 Chevrolet Suburban equipped with the 6. 2l l87 engine. There is an active gm service bulletin that we never received from either crabtree or gm. Vehicle details: • purchased in north carolina in 2024 • approximately 4,000 miles at purchase (used, still under factory warranty) • currently at approximately 60,000 miles • within the 5yr/60k powertrain warranty at the time of failure incident details: on Friday 2/20, the engine experienced a confirmed catastrophic failure while my wife was driving on the interstate at highway speed. The vehicle abruptly lost power, creating a significant safety hazard. She was able to maneuver to safety, but the situation presented a serious risk of injury. Gm has since towed the vehicle and confirmed catastrophic engine failure. We have been provided a rental vehicle - not a comparable one either (they refuse to address that also). Given the safety exposure and warranty status, I am evaluating potential potential claims including breach of warranty, implied warranty of merchantability, and any product liability considerations. I am also interested in understanding leverage for buyback, diminished value, risk of serious injury to my wife, or extended warranty resolution. I have preserved documentation, service records, and a written account of the incident.

Engine failure at 86,000 miles with documented regular oil change and recommended services.

Car started making weird noises when being driven or accelerating on 2/14. Took it to the dealership on 2/16 first thing when they opened. After 5 hours, it was determined the engine had a catastrophic failure and needed to be replaced. This car has less than 6,000 miles and was purchased brand new.

Driving on highway at approx 70mph, lost propulsion and speedometer went to 0. Came back after approx. 5 seconds. After exiting highway and stopping, clear knocking/clanging noise from engine. Gm states full engine replacement needed. This is a 2025 6. 2 v8, thought these issues were fixed?.

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My 2022 Chevrolet Suburban 6. 2l, approximately 96,000 miles. Vehicle was taken to dealership for transmission warning message and returned as “repaired” with a software update. The following day, February 12th, while driving at highway speed on the expressway, the vehicle suddenly lost power without warning. A message appeared instructing me to press start, and the vehicle shifted into neutral and stalled. No warning lights were illuminated prior to the stall. This created a serious safety risk due to sudden loss of power at highway speed.

On my third engine 12626 miles on it . Had oil changed . Opened oil filter canister found metal shavings black sluge new engine serial n1251074n44x0872 this the # for engine 3.

Engine rattles and noisy, now auto light and message board states "add engine oil).

See attached document for complaint.

While driving, the engine malfunctioned. There were no warning lamps, messages, or other symptoms prior to the malfunction. The vehicle has been inspected and repaired by a Chevrolet dealership.

My vehicle was subject to a gm recall involving inspection of the 6. 2l engine. The recall inspection was completed by an authorized gm dealership at 58,581 miles. The vehicle was cleared as passing the recall criteria and returned to me. Within fewer than 10 miles after leaving the dealership following the recall inspection, at approximately 58,590 miles, the vehicle experienced a sudden loss of propulsion while traveling at highway speed (approximately 65 mph) on a divided u. S. Highway while ascending an incline. The vehicle shifted into neutral and lost engine power without warning. Steering and braking remained functional, but the vehicle lost forward motive power in the left lane of traffic. Attempts to restart the engine resulted in a loud mechanical thud, and the engine would not restart. The vehicle was towed to the dealership. The engine is now being replaced. Prior to this incident, the vehicle had previously undergone an oil consumption test related to engine concerns before the recall campaign. This failure occurred shortly after the vehicle was inspected and cleared under the recall procedure. I am reporting this due to the sudden loss of propulsion at highway speed following recall inspection and the subsequent need for complete engine replacement.

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 NHTSA 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).

The contact owns a 2018 Chevrolet Suburban. The contact stated that on several occasions, while the vehicle was parked and running, or while driving at undisclosed speeds, the vehicle lost motive power. There was no warning light illuminated. Occasionally, the vehicle was able to be restarted; however, on other occasions, the vehicle required towing. The vehicle was taken to the dealer, but was not diagnosed or repaired. The contact stated that the battery cable and ignition switch were replaced; however, the failure persisted. The dealer informed the contact that the vehicle was unsafe to drive; however, the failure could not be duplicated. The manufacturer was made aware of the failure. The approximate failure mileage was 208,257.

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My 2023 chevy Suburban high country had the l87 engine loss of propulsion (related field action: see special coverage n252494003) recall performed on it and completed on August 15, 2025. Higher viscosity oil was put in. This was at approximately 55,000 miles. While driving on the highway at 60mph on December 29, 2025 the vehicle twice lost propulsion and indicated the vehicle needed to be restarted. I took it to a chevy dealer to have looked at in early January 2026 and they could find no issues or codes. On January 31, 2026 while driving on the hwy at 75 miles per hour the vehicle started to rattle and it lost propulsion. The dic indicatd "system failure" and I had to pull off to the shoulder of the highway. The dic repeated "system failure" and that the vehicle needed to be restarted. The vehicle would not restart when attempting to press the brake and restart. This happened on a busy interstate and the safety and well being of my family inside was put at a risk that could have been avoided, likely if the engine would have been replaced in August of 2025. The temperature outside was in the single digits and there was no air pushing through the vehicle while we waited for a tow truck and another family member to pick us up off the highway. There was no warning lights or messages prior to this happening. The vehicle is currenlty undergoing diagnostic testing at a chevy dealership. This happened at 69,000 miles. This is highly concerning that this could happen in a 95,000 dollar vehicle. This is absolutely a saftey risk. I'm lucky I was able to merge on the interstate in a vehicle that could not maintain the speed with traffic and pull off to the shoulder.

We have 8,625 miles on our 2025 Suburban. We were going down the highway when began to hear a unfamiliar noise. We pulled over into an error to inspect and didn't notice anything under the vehicle, which we thought might have cause the noise. We put into drive and went less than an 1/8 of a mile and our Suburban lost acceleration and stopped. It would not start and couldn't not be moved, until roadside assistance took it to a Chevrolet dealership. The dealer stated the engine seized up and needs to be replaced. We were fortunate we were not going any more than 20 miles per hour and were not on a major highway.

While driving the engine warning light, service esc light, and collision light all came on and an engine knock started. I also experienced a loss of power at the same time. Car was taken to local chevy dealership for evaluation and repair. Dealership advised that they dropped the oil and found metal shavings in the oil. After further investigation, we were advised that it was a crankshaft connecting rod failure. We have an extended warranty and were waiting to hear back on repair coverage. Gm denied the repair as this vehicle is not part of the active recall. Our warranty company also denied the repair stating we did not have adequate records of oil changes. Receipts for oil and filters were provided.

My vehicle was taken in to shop due to recall recommendation I received in gm app for fuel pump control module . After repair was done my engine begin ticking the same day and failed a week later . I documented the whole thing and filed a claim with gm however the dealership that did the repair are not responding to gm . The dealership is alm chevorlet south in jonesboro ,GA this vehicle stalled out while I was on the highway . Please help me this vehicle belongs to my limo fleet and this is detrimental to my business . After multiple attempts to get it diagnosed they kept telling me I had to wait in line for weeks out to get it checked out although the problem arose after the new part installation . Then when I brung it back with failed engine soon after they told me that I had to sign a liability release waiver for them to check out the vehicle stating that the vehicle was high mileage and not their fault . The service manager literally instructed me not to leave my vehicle when I wanted to because it would not speed up the process for it to be seen I brung it back when instructed but it was to late because the engine had already failed . They literally forced me to sign a waiver stating that they wouldn’t diagnose it if I didn’t sign the waiver . These people are committing a fraudulent scam and their are unsafe vehicles on the road that arent being treated properly due to these practices . Please contact the dealership and or gm to take this matter more seriously .

1. ) January 29 2026 @6:00pm vehicle was in use. Driver accelerated to avoid another vehicle and the engine loss all power. When pushing on the accelerator the tachometer would increase as if I was reving the engine however there was no power. Safety issue: with power completly lost, I had to coast over to the should of highway 10 and sit on the shoulder. Vehicle had to be turned off and restarted in order for the vehicle to have power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. ) March of 2021 - vehicle was in use. Driver accelerated to merge with traffice and the engine experienced a loss of all power. When pushing on the accelerator the tachometer would increase as if I was reving the engine however there was no power. Driver contacted on-star seeking assistance. On-star rep advised that I pull over onto the shoulder of the highway, turn off the vehicle, then turn it back on which temporatily worked. Safety issue: with power completly lost, I had to coast over to the should of highway 60 freeway and sit on the shoulder. Vehicle had to be turned off and restarted in order for the vehicle to have power. Action taken: vehicle was taken to a GMC certified dealer and the "control cylinoid valve & transmission control modual assembly were replaced. First incident the repair was under warrenty and there was no expense to the owner second incident the repair was not under warrenty and owner is required to pay repairs.

The engine failed right in the middle of a intersection completely shut down, locked up the motor.

The engine self-destructed due to a thrust bearing failure as described in general motors technical service bulletin 25-na-307 there were no warning lights prior to the engine failure. The vehicle has been inspected by carl black GMC in roswell, GA and been found to fall under the thrust bearing failure TSB according to the service technician, these engines have been failing in large numbers.