Table 1 shows one common equipment related problems of the 2023 GMC Yukon.
| Problem Category | Number of Problems |
|---|---|
| Equipment problems |
I was traveling with my family on the ohio turnpike. We were traveling west in our 2023 GMC Yukon denali when we lost all propulsion and the engine seized. There was no warning lights or other symptoms prior to this incident on may 3, 2026. In fact, I had the vehicle in for the prescribed recall to test the engine for the known defect earlier in 2026. The vehicle passed that test and was given the upgraded oil change to presumably prevent the engine failure in the future. It did not work. Our safety and others on the turnpike were at risk while we were traveling at highway rates of speed with sudden loss of all propulsion. The vehicle was towed that evening to local gm dealer - yark chevy in [xxx] . Upon inspection on may 5, 2026, the dealership informed me the engine had seized and would be replaced by gm. They were unable to provide a timeline for this repair. I have the tow expense of $260. 70 and now the uncertainty of when I might have a vehicle back. The safety of my family and all others traveling the ohio turnpike that date were at significant risk. The vehicle remains at yark chevy in perrysburg, ohio available for inspection upon request. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
The panoramic sunroof on my 2023 GMC Yukon denali ultimate xl spontaneously exploded while driving westbound on I-20 on March 13. There was no impact from road debris, no vehicles ahead, no overpass, and no external cause. The failure sounded like an explosion or gunshot. Tempered glass shattered with the sunroof in the closed position, showering the interior with glass fragments. Five occupants were in the vehicle at the time. No injuries occurred, but the sudden explosive noise and shower of glass created an extreme distraction and safety hazard while operating the vehicle at highway speed. The incident could easily have caused a loss of vehicle control on the interstate. The component that failed is the factory-installed panoramic power sunroof glass, standard equipment on the denali ultimate trim. The vehicle was taken to lugoff Chevrolet for inspection. The dealer confirmed the glass failure and submitted a request to gm for warranty or goodwill coverage. Gm offered to cover only 10% of the repair cost, characterizing the failure as an out-of-warranty wear issue despite the spontaneous nature of the defect. There were no warning signs, cracks, chips, warning lamps, or any indication of a problem prior to the failure. The sunroof was closed at the time. The vehicle has been dealer-maintained with no modifications to the sunroof or roof structure. This is a known industry-wide defect. Nhtsa has previously investigated spontaneous sunroof shattering and documented over 4,000 complaints. Gm has acknowledged awareness of this issue in other gm vehicles and previously issued corrective actions for sunroof glass on the Buick regal and Chevrolet cruze. Other GMC Yukon owners have filed NHTSA complaints describing identical failures. The failed sunroof glass and vehicle are available for inspection upon request.
The onstar module of my 2023 GMC Yukon has failed. This is a wide spread issue with recent model GMC's. There are thousands of reports of the same thing happenings. When an onstar module fails, the vehicle loses its safety features. No lane departure, no collision detection or pre-collision braking, no critical system checks. Even the gas and mileage components stop working correctly.
Post-recall 25v274 ( & ea25007, ea25001) exhaust intrusion with carbon monoxide poisoning hazard following the complete engine replacement under gm recall n252494000, my vehicle has developed a severe and persistent exhaust intrusion that allows toxic exhaust fumes, including carbon monoxide (CO), to enter the passenger cabin. Co levels have measured a peak of 83 ppm and consistent reading between 20-37 over multiple tests. Pattern of post-recall exhaust system failures vehicle has been in for service 6 times, over 100 days, as part of the engine replacement plus (metal found in the oil pan). Since recall, the vehicle has had an exhaust smell and noise rattle issue with the following exhaust system components deemed failed and been replaced: 1. Radiator cap (leaking onto exhaust) 2. Exhaust muffler (replaced twice - June 2025 and August 2025) 3. Exhaust clamps (leaking) 4. Left exhaust manifold (warped) critical finding: despite replacement of virtually the entire exhaust system, the defect persists. This suggests a fundamental design or installation defect related to the engine replacement procedure, not isolated component failures. Documented carbon monoxide levels: between January 30 and February 3, 2026, I conducted 15+ tests using a professional-grade klein tools et180 carbon monoxide meter. Results: • peak reading: 83 ppm • multiple readings: 40-72 ppm sustained for 6+ minutes directly at my [xxx] daughter's car seat position • testing method: vehicle started via remote start, CO meter placed in cabin, readings recorded over 10-15 minute periods health impacts to family: • wife and [xxx] daughter consistently experience dizziness, headaches, and nausea when riding in vehicle • daughter now refuses to ride in vehicle because it makes her feel sick • symptoms consistent with carbon monoxide poisoning independent service station verification on January 30th confirmed "vehicle is dangerous to operate with children inside and needs immediate service. " information redacted pursuant to the freedom of informa.
Engine failed 1400 miles from home on 6. 2l engine - days after getting l87 engine loss of propulsion recall service. Recall service completed on 12/1/2025 - cap and oil change done - full engine failure on 12/22/2025. 12/1/2025 - l87 engine recall service done at GMC dealership - quincy IL 12/16/2025- check engine light came on - went to same dealership - cleared it told me I was fine to drive across country 12/22/2025 - full engine failure on GMC Yukon denali.
I bought my 2023 Yukon denali ultimate on or around August 9 2023, and I bought it brand new. On may 28 2024, around 30k miles, I was on the highway and could no longer accelerate. I luckily got myself into the breakdown lane before my car shut down & lost power, ended up being towed to the closest dealership. After 18 days at the dealership, I finally had my car back with a "new engine". Fast forward to November 25, 2025, I was on the highway again, my dash lit up telling me to "press start". As I figured that was not a good idea while driving in the fast lane on the highway, I did not. In a panic I got myself over to the breakdown lane where my car turned off. This time (November 2025), I still had power, but no car turnover. After 6 days of my car sitting at the dealership, they finally had the time to look at the issue. The dealership did the recall and got the car started, but the car still had a funny sound that the mechanics didn’t like , so they were waiting to hear back from higher up people as to what to do. Today I got the call that they will be replacing the engine for a second time and I will not have my car back until the first week of January. There were zero warning lamps, zero symptoms, nothing. I am lucky that the highway wasn’t too busy in that moment, because there were many 18 wheelers on the road that day, and one almost swerved into my car missing it by about two feet while my dead car sat in the breakdown lane. Yes I called the state police, yes one trooper kindly pulled behind me to ask if I was safe and had a tow on the way. But that truck that nearly plowed into my dead car could have prevented me from picking my [xxx] [xxx] [xxx] daughters up from school, forever . To say that I am disgusted with gm, is an understatement. They’re risking lives. I should not fear for my life, my kids lives in a new, "safe" vehicle. No pun intended, but this is highway robbery. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
On star module completely out no internet on vehicle no ability to use onstar during an emergency unable to connect to vehicle noticed it all stopped after a vehicle update.
Onstar telematic module failed. Dealer stated it shorted internally. Upon researching online this is a pretty common issue. This module is important to safety as it can detect & report crashes, help get first responders on scene in the event of a crash, etc. My vehicle was less than three years old and had an active onstar subscription at the time of failure.
A recall notice was issued in April 2025. I have tried to get the recall issue fixed but my dealership has stated they cannot touch it yet as parts are not available. I have been told to continue driving my car and use only the oil as stated on the oil cap. My tab renewal notice has the recall listed, my GMC app shows the recall and NHTSA shows the recall. I have not been told when I can get my potentially faulty engine fixed or even looked at.
GMC unable to remedy a recall that appears to be dangerous to operate without being addressed. Recall number n25249000.
The sunroof exploded while driving down the highway.
Sunroof exploded.
I was driving on the highway going about 50 mph and the engine just stopped. It was very dangerous, and I couldn't get to a completely safe spot. I was stuck for 45 minutes there until police could get to my Yukon and help provide safety. I had 2 other passengers in the car. All of us were put at great risk and the surrounding traffic was also at risk. The triple a towing took over an hour to get the vehicle on a flatbed because they couldn't get the Yukon in neutral. There were absolutely no warning lights or any weird noises, the car shifted out of drive and would not go back into any gear. I am waiting for the dealership to decide what to do. My main reason for writing this complaint is this is a big hazard, not only for people who drive/ride in these vehicles but for every vehicle on the roads around them. When they stop with no warning, accidents and I'm sure some with fatalities will happen. This is a critical situation, and these vehicles should all be off the road. My Yukon was in my dealership service for an oil change about 1 week prior to this incident and I had a long conversation about the recall. They said my Yukon looked great and nothing was needed unless I had any problems. Since there have been so many others with the failed engine, all vehicles with this recall should be off the road to prevent totally innocent people from being in these dangerous situations. This is preventable if these cars are forbidden on the roads!!! gm must take responsibility before lives are lost due to this negligent reaction of issuing a recall but saying it is safe to keep driving unless there is a problem. If the first sign of a problem is failure with resulting catastrophic outcomes, then just issuing a recall is not enough. This must be addressed, please. This was a terrifying experience for me and my riders. I have no idea if the police filed the report but they spent alot of time trying to keep everything safe due to this issue.
There is a safety recall but it has not yet been resolved, risking lives.
I own a 2023 GMC Yukon denali xl (VIN: [xxx] ) currently under active recall for the l87 6. 2l engine. Gm has no remedy available and has acknowledged a risk of complete engine failure and loss of propulsion, which could occur without warning. This is the primary vehicle I have for transporting my family of seven, including a toddler. I am significantly upside down on the loan, and the dealership cannot guarantee it is safe to drive. I am requesting that NHTSA escalate the urgency and hold the manufacturer accountable for timely resolution or replacement. ” information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
I own a 2023 GMC Yukon denali with the 6. 2l v8 engine. A safety recall was recently issued for this vehicle due to a potential engine defect that could result in sudden and severe failure. However, gm has not provided a remedy, and dealerships are unable to offer any repair or trade-in options while the recall remains open and unresolved. I live in a rural area with limited cell service and long distances between towns. This makes the potential for sudden engine failure even more dangerous. Out of serious concern for my family’s safety, I no longer feel comfortable allowing my wife or our [xxx] child to ride in or use the vehicle. The risk of being stranded—or worse, getting into an accident due to engine failure—is too great given our location and the nature of this defect. I attempted to trade in the vehicle at a GMC dealership to get into a safer and unaffected vehicle, but the dealer refused to accept it because of the recall. This leaves me stuck with a vehicle that has a known safety issue and no solution in sight, limiting both my transportation options and peace of mind. There were no warning lights or prior symptoms before the recall. The issue was disclosed by the manufacturer. A dealer has confirmed the recall is active, but no fix exists. This situation is unacceptable and has real-world safety and financial consequences for families like mine. I urge the NHTSA to hold gm accountable and ensure a remedy is made available immediately to protect consumers who are left in limbo by this unresolved and serious safety defect. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
While on vacation, 2023 GMC started making a very loud fan noise. Brought to two dealerships and displayed code for coolant flow control valve. We were told we can drive it home but to bring it to our dealership. Trying to drive home was a major safety concern. While on the highway our vehicle would suddenly lose speed and the engine would get quite loud. Causing us to pull over and wait…. With 5 kids. It’s been 6 weeks and no word when this will be fixed. All our summer plans are just being shot due to needing a large vehicle and our dealership said we cannot drive it.
Liftgate opening without pushing the button, it just randomly opens.
The onstar module becomes inoperable due to a fault with the onstar module. This is a known issue on many forums and gm has yet to issue a fix with mass reported onstar module failures. This fault renders useless the safety systems.
Vehicle went to gm for recall repairs on 02/24/25 the morning after when I cranked my car it was dead. Jumped the car off then began hearing a "clicking noise" gm advised I replace my serpentine belt as they noticed it needed replacement when doing the recall repairs. 02/26/25 serpentine belt was replaced but car still seemed to have power issues when cranking. 02/27/25 car barely cranked then while driving down the highway I lost all power and power steering to the vehicle. There was no warning, no check engine lights etc. The screen went black then car shut off then the screen said "press start to restart. " I was barely able to get the vehicle safely off the road with vehicles in front, behind, and in the other lanes. It could have caused a fatal accident. GMC still has my vehicle with no update on replacement engine timeline.
During the operation of my 2023 GMC Yukon xl at4 on [xxx], carbon monoxide (CO) entered the cabin, exposing my children and me to dangerously high levels of CO and causing confirmed carbon monoxide poisoning. We were driving with the engine running and the heater on for approximately 21 minutes when the exposure occurred. Symptoms began to escalate that day and into the proceeding days, including severe headache, stomachache, pallor, chest pressure, shortness of breath, fatigue, and neurological issues. My children, particularly my [xxx] and [xxx] , experienced the most severe effects— both were very ill especially my [xxx] . Unfortunately, we initially did not believe it was possible for CO to enter the vehicle cabin, which delayed early intervention and appropriate medical care. Blood testing 4 days later confirmed elevated carboxyhemoglobin levels in my [xxx] , the only one tested. During the incident, the battery warning light was the first indication of trouble, but soon after, many additional error messages began flashing on the dashboard. The vehicle then overheated, decelerated, and eventually shut down while driving. We were in the vehicle under 21 minutes. Upon inspection after the incident, my husband noted a severed belt and potential pulley issues. The exact cause of the CO intrusion has not yet been identified. The vehicle is available for inspection and unaltered to preserve evidence. I am writing GMC and requesting further investigation by GMC. This incident reflects a severe safety issue with potentially life-threatening implications for GMC owners. Co exposure can cause significant harm, and delayed identification in this case placed my family at substantial risk. Immediate investigation and corrective action are essential to prevent similar incidents from occurring in the future. Time is critical, as this defect could have catastrophic consequences for other unsuspecting drivers and their families. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
I took my SUV (yukon slt 2023) to the GMC dealership 4/5 months ago because of 2 recalls, failed brake fluid leak detection and serial data gateway model. The car was repaired according to the dealership. About 2 weeks ago, I entered my garage to auto start my vehicle and my SUV would not auto start. I waited a few minutes and tried to start it again from inside the vehicle and it started. When it started, the engine light was on and on the dashboard, brake system failure was displaying. It was very strange. So, I let my vehicle idle for a couple of minutes and tried to move the car in the garage. The car started jerking when I put it in drive and a message displayed on the dashboard telling me not to drive my SUV over 40 mph. The brake system failure and engine light were still on. It was very strange. I parked my SUV and let it sit. I'm taking my SUV back to the dealership on Thursday. I'm thankful I wasn't on the highway traveling to work, who knows what could have happened. There are massive problems with these vehicles, brakes, engine, computer systems, etc. I do not feel safe driving my SUV. I drive 41 miles each way for work and I don't feel safe driving this vehicle now with all the recalls, including the engine.
My vehicle started making a terrible noise. I had it towed to the nearest gm service center. It was determined that the vehicle, a 2023 Yukon denali (less than 26000 miles) needed a new engine due to thrust bearing failure causing the engine block to be scored and contamination of debris internally.
Engine had to be replaced at 25000 miles.
Complete engine failure while operating the vehicle with our children riding along as passengers. The engine failure nearly caused us to wreck. 2023 GMC Yukon xl denali with only 15,000 miles. And now, I am being told that I need a complete engine replacement and that GMC is well aware of these engine failures and the product defects, yet GMC has refused to issue a recall. To add insult to injury, I’m being told by dealership that it may take several months to get a new engine! we will be pursuing legal action.
At approximately 9,000 miles the engine started knocking. I took it to the dealer today and they called to confirm the engine and radiator needed to be replaced as there are metal shavings in the oil. I'm not sure if it is the 6. 2l engine lifter issue or if this is something different, nonetheless, engine issues for GMC seem to be systemic based on quick research and seeing posts in forums and social media.
Problem synopsis: camera issues in 2023 Yukon denali vehicle information: model: 2023 Yukon denali issue description: the vehicle's camera system exhibits malfunctioning behavior after the vehicle gets wet, such as following intense rain. Problem details: initial trigger: the problem begins when the vehicle is put into reverse after being exposed to water, particularly following heavy rainfall. Observed malfunctions: the driver's side camera ceases to function immediately upon engaging reverse. Abrupt braking while in reverse leads to additional failures: the passenger side and forward-facing cameras also go black. Temporary recovery: the cameras intermittently resume operation based on the vehicle's movement: stepping on the brakes causes all cameras to go black. The cameras come back online one by one when the car rocks back, likely indicating water displacement around electrical connectors or modules. Hypothesis: the issues are likely caused by water affecting the electrical connections or modules associated with the camera system. This hypothesis is supported by the cameras' behavior correlating with changes in the vehicle's position and the presence of water. Recommendation: a thorough inspection of the camera system's connectors and modules is recommended, with particular attention to waterproofing and potential areas where water might collect and impact electrical components. Attached evidence: the attached document contains pictures illustrating the camera issues as observed during the malfunction. These images were taken immediately after the intense rain when the vehicle was put into reverse and during the subsequent camera failures. [xxx] [xxx] [xxx] solon, ohio [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Engine oil level drops significantly well before the oil change interval. Vehicle consumes excessive oil without warning lights or leaks. Risk of engine damage or failure if oil level is not closely monitored. Condition discovered during normal use.
Faulty sunroof flooded interior while driving. Dealers and mechanics say it is a known problem. Dangerous to drive while water is running down the driver and passengers. No warnings prior.
Electric trailer brake control module intermittently disabled trailer electric brakes while towing electric brake equipped trailers. This is the same issue addressed in gm service bulletin n232414840 which addressed a similar issue associated with gm pickup trucks. The loss of trailer brake utilization may create a safety hazard resulting from longer stopping distances. The factory control module was replaced with a redesigned module purchased from gm and the problem went away. I am of the opinion that the factory-provided module is a deficient design which warrants replacement by the vehicle manufacture.
I was driving on highway 78 from alabama to mississippi, when all of a sudden we heard a loud explosion type noise. My husband looked up at the panoramic sunroof, and there was a large hole, along with shattered glass. We looked in the SUV, and there were no objects to be found that could have broken the sunroof. It appears the sunroof spontaneously exploded.