Engine And Engine Cooling Problems of Chevrolet Suburban - part 2

See attached document for complaint.

See all problems of the 2021 Chevrolet Suburban 🔎.

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.

See all problems of the 2022 Chevrolet Suburban 🔎.

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).

See all problems of the 2019 Chevrolet Suburban 🔎.

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.

See all problems of the 2018 Chevrolet Suburban 🔎.

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.

See all problems of the 2023 Chevrolet Suburban 🔎.

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.

See all problems of the 2025 Chevrolet Suburban 🔎.

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.

My 2018 lt chevy Suburban with 110000 miles has been giving me transmission and motor problems. I took it to chevy vannuys and they took 3 days and did nothing. I saw a recall on line for the same year. Explaining about transmission problems. Where can I go to have it fixed.

While driving at highway speeds my vehicle lost steering the radio and the hvac turned off. I had abs and brake lights on the dash as well as a service stabilitrac message. The vehicle completely shutoff and I almost had an auto accident. I have not taken it anywhere as I’m to afraid to drive it for fear of having an accident.

See all problems of the 2015 Chevrolet Suburban 🔎.

Was driving on highway and engine started to make a noise, performance and power were impacted, the engine service light appeared. Exited highway on near offramp, when on offramp vehicle engine stopped working. Vehicle is a 2025 Chevrolet Suburban with 6. 2l engine. Dealer has stated engine is seized. Seems exactly like the current 6. 2l engine recall for 2021-2024 model years that results in engine failure. Vehicle is 7-8 months old, and only has roughly 12,000 miles.

The code that originally came up was p0300 a (engine misfire). I had this truck for one year and it says my fuel injector went bad so I’m getting the whole tune up done. I have the my Chevrolet app connected to my vehicle and it’s saying: the engine/transmission system needs service and the emissions system! mind you I e only had this vehicle for one year I bought it in February 2024 and it’s a 2023! I bought it from lindsay Ford in wheaton MD. I feel as though all this should not be happening in a matter of one year l believe I was sold a defective truck.

On January 13, 2026, the engine in my Suburban failed suddenly and completely, rendering the vehicle inoperable without warning. The failure left me stranded with my children, creating a serious safety concern and requiring immediate towing. Prior to that day, the vehicle exhibited no ongoing symptoms, warning lights, or performance issues, aside from a ticking noise that appeared only on the day of failure. The vehicle was towed to an authorized Chevrolet dealership, where it was determined that the engine was damaged beyond repair and required full replacement. I was informed a new engine would need to be ordered, at an estimated cost of approximately $14,000—an extraordinary and unreasonable expense for a vehicle of this age and price point.

I own a 2022 Chevrolet Suburban rst that has experienced ongoing mechanical and safety issues over several years. I first began reporting drivability concerns to general motors and the dealership in 2023 and continued contacting them throughout 2024 and 2025. During one dealership visit, a sales advisor rode in the vehicle with me and stated they did not observe any issues, despite my continued reports. The vehicle later suffered a loss of propulsion and required a full engine replacement. The radiator and cooling components were also replaced by a Chevrolet dealership. Due to ongoing concerns for my safety, I contacted general motors multiple times, requested an executive buyback, and asked about lemon law options. Gm advised that the engine had been replaced and that I needed to take ownership of the vehicle. After picking up the vehicle last Wednesday, I immediately noticed a persistent sweet coolant/radiator odor inside the cabin and outside the vehicle that continued for nearly a week. I also experienced engine hesitation/stuttering when stopped at traffic lights as the auto start/stop feature reengaged. I attempted to contact gm again regarding these concerns prior to today’s incident. Today, while driving, the vehicle displayed an engine overheating warning instructing me to turn the car off immediately. I safely pulled over and shut the vehicle down and am currently stranded roadside. Given the repeated failures, history of loss of propulsion, multiple repair attempts, denied buyback requests, persistent coolant odor, drivability issues, and now overheating shortly after engine and radiator replacement, I believe this vehicle presents an ongoing safety risk and request formal investigation.

Component or system failure the vehicle experienced two major mechanical failures. First, the transmission failed and required full replacement shortly after the expiration of the 60,000-mile powertrain warranty. At the time of this failure, the vehicle had approximately 61,000 miles. Second, at 100,119 miles, the engine suffered a catastrophic failure that required complete engine replacement. Safety risk the transmission failure impaired normal drivability and created a safety risk due to reduced or unreliable propulsion, which could have resulted in loss of power while driving in traffic. The engine failure rendered the vehicle inoperable and could have posed a serious safety hazard if it had occurred while the vehicle was in motion, including sudden loss of engine power. Problem confirmation and inspection both failures were diagnosed and confirmed by dealership service personnel, who determined that full replacement of the transmission and later the engine was necessary. The issues were identified through inspection and standard diagnostic procedures. Warning lamps or symptoms there were no clear, persistent, or meaningful warning lamps, messages, or symptoms that would have reasonably alerted the driver to an impending transmission failure prior to it occurring. Any warning indicators appeared at or immediately before the failure. Similarly, there were no significant warning signs that would have predicted the engine failure prior to the need for complete replacement. Additional information both the transmission and engine failed at relatively low mileage for major powertrain components. The transmission failure occurred just beyond the powertrain warranty threshold, and the engine required full replacement at 100,119 miles. . These failures suggest a potential defect or durability concern affecting critical powertrain systems.

See all problems of the 2017 Chevrolet Suburban 🔎.

My 6. 2l engine failed on 1/6/26 due to a oem bearing issue. The vehicle was inspected and engine had to be replaced after the recall and service were done. The vehicle stalled while doing 30 mph on a local road. No warning lights or problems were observed or detected prior to the incident.

My vehicle is having an oil consumption problem. 2 quarts were missing from my oils consumption test. The dealer is now doing a secondary oil consumption test and I’ve read up and learned that there have been a lot of recalls with the engine and oils changes.

The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving at various speeds, an abnormal oil consumption was noticed. No warning light was illuminated. In addition, the vehicle was previously taken to a local dealer, where an oil consumption test was performed; however, the contact was advised to bring the vehicle back for further investigation. An appointment with the same local dealer was scheduled to inspect the vehicle. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

Driving on interstate and gradual onset of clicking/knocking. Within 5 minutes complete loss of propulsion and throttle. Rpm went to zero. Oil pressure/temperature/engine lights all fine. Dealership states "catastrophic engine failure. " my family was in the vehicle. Fortunately still had power steering and brakes and able to guide vehicle to shoulder.

See all problems of the 2020 Chevrolet Suburban 🔎.

The vehicle went into limp mode! everything associated with it happened so quickly,no brakes,no steering ,it was terrifying. We got safely to a gas station. We were advised to take it to a certified Chevrolet dealer which we did we had it towed to the certified Chevrolet dealer in charlevoix, michigan. They hooked it up to the diagnostics and said they found absolutely nothing wrong with the vehicle. Very frustrating! after experiencing this terrible incident will never feel safe in this vehicle!.

See all problems of the 2024 Chevrolet Suburban 🔎.

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.

The car was driving at 60 mph on a regular commute to work and the car was stalling and shaking and soon after the check engine light came on with multiple issues.

While driving we received a notification on our dash board stating “reduced acceleration drive with caution”. We had it towed to the dealership where they said we needed a full engine replacement. It took 22 days to get the vehicle back.

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.

I have a 2021 chevy Suburban with the l87 6. 2l v8 engine. At 7k miles, we have lost propulsion, leaving the car undrivable. Resulted in the dealer replacing all 16 lifters under a recognized bulletin. I never received extended 6yr 100k mile powertrain warranty as described in the bulletin. Since then, there have been 3 other issues with loss of propulsion, resulting in replacement of fuel pump modulator. Belt pulley system, one of the incidents left us without power or control of our vehicle on the interstate, with no where to pull over or get out of the way of oncoming semi trucks. The last incident again left the vehicle undriveable at 84k miles, with the dealer currently reporting that it is a lifter and cam shaft issue. Resulting in a 10k bill. They state that it is not covered under the recall of these engines because it is the top of the engine versus the bottom. Clearly, the engine oil problem noted in the recall has contributed to these issues . And the crankshaft not syncing properly with the lifters.

Replaced lifters 1,3,5,7 and added automatic fuel mgmt system bypass chip after the vehicle went into limp mode on the highway. Ran for less than 2000 miles and those same lifters failed a second time and had to be replaced again. The last incident occurred after about 200 miles and had engine failure, limp mode with multiple sensor failures in the middle of the road in the dark. Limited ability to move it safely off the road.

Sudden power loss on highway. Engine would not respond. We were fortunate to have been able to pull over to the side of the road but in an unsafe merging area. Vehicle restarted after multiple attempts, but engine would not exceed 3000 rpm causing unsafe speed on highway. Engine died again causing total power loss. I was able to coast down the hill to safely park out of the way of traffic. Tow truck was needed. Vehicle was towed to dealer where it was purchased. After inspection, the engine was confirmed to have failed. The dealer advised for engine replacement as part of the l87 recall. This engine was previously inspected less than 10,000 miles prior as part of the same recall, and the higher-weight oil had been used since per the manufacturer's recommendation. However the inspected engine appears to have failed regardless. This sudden loss of power happened about two weeks prior, with the driver able to pull to safety and restart. It was dismissed as a fluke since it did not occur for the next two weeks.

Went into limp mode on 11/6/25, took to the dealership where they found metal shavings in the oil due to a “stuck solenoid ‘a’”. Originally said that I’d need a whole new transmission, decided to do the cheaper easier repair and just replaced the valve train (not my choice) got it back on 11/13/25. On 11/24/25 I was on a very busy highway, at a red light, hit the gas when the light changed and the car didn’t move. Just revved the rpms, then it suddenly lurched/surged forwards. Took it back to the dealership and they said “it doesn’t have any codes showing”. This is not normal behavior for a 4 year old vehicle with less than 40k miles on it.

Car initially started stuttering on the high, check engine and traction control lights came on. I immediately went to the nearest chevy dealership a mile away. Initially I had 20 error codes. The problem was the left side lifters 4 of 8 stop working. Dealership recommended replace left lifters, 2 push rods, valve cove, head gasket. $5000. After starting the work. The technician could not repair the lifters because my camshaft is pitted and the rods were rotating. Their recommendation is to replaced the whole engine to fully fix the problem. $12000 with 3 yr warranty. My SUV just 100kmiles.

Vehicle experienced sudden engine malfunction including rough idle, hard misfire, and flashing check engine light. Vehicle was diagnosed with a collapsed lifter and internal engine failure. Metallic debris was found in the engine oil, including silver and gold/bronze particles consistent with bearing material. A Chevrolet dealer inspected the vehicle and determined that the engine requires complete replacement due to internal mechanical failure. Vehicle is equipped with the 6. 2l v8 (l87) engine. The failure occurred without warning and presents a safety concern due to potential loss of propulsion. This vehicle is not currently included in the existing gm 6. 2l engine recall, despite exhibiting the same failure characteristics reported in other affected vehicles with the same engine and year that were included in the recall. Vehicle has not been driven since metal contamination was discovered to prevent further damage.

The contact owns a 2020 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle stalled. A passerby helped the contact to push the vehicle into a parking lot. There was no warning light illuminated. The contact left the vehicle in the parking lot. The following day, the vehicle restarted as intended. The contact stated that on a separate occasion, the vehicle failed to start. The push to start button occasionally became stuck, and the contact continuously pressed the button to release it. The vehicle was towed to the dealer, but no cause for the failure was found. The vehicle was taken back to the residence, and upon exiting the vehicle, the contact noticed loose cables. The contact's husband plugged the cables back into place. The failure persisted, and the vehicle remained at the residence unrepaired. The contact had not driven the vehicle due to safety concerns. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.