general problems of the 2023 GMC Yukon - part 2

Liftgate opening without pushing the button, it just randomly opens.

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.

While driving the 370 miles from fairbanks to anchorage with our family and dogs, our vehicle shut down completely with no warning. The drive is through a very remote section of alaska. While passing a slower vehicle, our Yukon completely shut down, to include the all controls including the dash and lights. We were unable to complete the pass, leaving us in direct line with on coming traffic with no ability to speed up to get around the other vehicle. The other vehicle, not knowing we had lost all power, continued driving the same speed and eventually we were able to get back into the proper lane and coast to a stop on the side of the 2 lane highway. The vehicle would not start and with the temperatures outside at 12 degrees it got chilly fast. Luckily we travel with all of our winter gear. Had this incident happened on one of the many steep descents or curves with snow and ice, the outcome could have been disastrous. My wife has decided that if the vehicle does get fixed, she does not feel safe driving home in it. Reading online forums show that this is a very common occurrence and individuals are looking into a class action lawsuit against gm due to the safety issues associated with this. An individual passing by had a code reader and tried to reset the ecm but could not. I will include the report.

We were driving uphill on the highway, about 60 mph when the engine appeared to loose some power for about 10 seconds even though the engine was reving higher, and the ln the engine cut out. We coasted to a stop and then the electrical system was cutting out. I tried to restart the engine but it would not turn over at all, and the car’s electrical was intermittent. There was no warning or error lights before or during the engine failure. Photos provided are the messages on the instrument cluster when attempting to restart the engine. Vehicle was towed to the local GMC dealership, and they are replacing the engine under warranty. No eta on the engine replacement at this time.

Engine failure at 19k 14months old 6. 2l 2023 GMC Yukon denali ultimate "everyone is having an issue these engines coming apart" low milage.

The 2023 GMC Yukon had a complete loss of power and engine while driving 65 mph on a highway. The vehicle was unable to restart or be placed into neutral. No previous issues and no indications of failures. No fault codes or lights indicating any issues. Dealership informed me that the engine stopped working and gave an estimate of greater than 4 months for any replacement or repair.

Good afternoon. Our rental car we picked up from the denver International airport on [xxx] had numerous incidents of emergent braking at highway and non highway speeds which were reported to sixt ( car rental) and documented on the dates in which they occurred, [xxx] (7-8 occurrences ) and [xxx] (3 occurrences-2 after a car wash). On the day in which the first occurrences happened, the car rental company representative from sixt, 3way connected me with a mechanic from annex who advised washing the vehicle to ensure the sensors were clean. I did proceed to wash the vehicle on 1. 25. 25. This same company, annex automotive, then evaluated the vehicle on 1. 29. 25 after emergency breaking occurrences continued of which [xxx] was the worst. On [xxx] there were no vehicles in front of or behind us nor to the sides of us and the roads were completely clear. It was also dark out. Attached you will find evaluation with validation there is a mechanical concern with the vehicle. On [xxx] the extremely unsafe occurrence of emergent braking occurred with skidding tires and the doors locking and unlocking at the same time occurred. This vehicle was completely unsafe to drive. I, as well as my passengers/family, are very lucky the road conditions were moderate on [xxx] and clear on [xxx], or these emergency breaking issues could have caused a serious accident. There were a total of five of us in the vehicle when all of these occurred. I am from minnesota and have a Yukon xl so I am comfortable with this vehicle this was the scariest vehicle experience I have ever encountered. The company did tow the vehicle on 1. 29. 25. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I have had this vehicle serviced twice for the electrical issue on the running boards. While driving and while parked the running boards constantly deploy and store on their own or get stuck at a half way position. This will happen even if I have them turned off or on.

At 9,900 miles my safety camera system failed which disabled the cruise control and all safety features that used the camera. Car was out of service for nearly two weeks and subsequently fixed by the dealer under warranty at no charge. At 11,300 miles I was driving on an interstate highway in the left lane at rush hour, without warning the car stopped accelerating the car shifted into neutral and totally lost power. It was a very dangerous situation with me in the left lane in heavy traffic. I am a skillful driver and thankfully I was able to make it off the travel lanes on the highway. The temperature was 18 degrees at the time and I had to wait outside for a tow truck. The engine seized without warning or noise and this presents a severe danger to the driver of the vehicle and other vehicles on the highway. There was a substantial possibility that other vehicles could not avoid me as I was exiting the travel lanes. There was also a substantial possibility that the vehicle would simply be in the travel lane stopped on a divided highway.

Onstar module doesn’t work it went out in January 2025 there’s a 1000’s of other users in the in the onstar module community complaining of the same issues . When you take it to the dealership they will not assist and will not warranty it out.

I have been told the module asm-comn interfac part #86581706 has failed and is on back order, with no anticipated in stock date, and not available to be repaired. This controls the vehicles communication with onstar which is currently not working. Onstar is sold as a safety feature of the vehicle. In addition I do not have access to the location services of the vehicle, also sold as a safety feature of the vehicle. The vehicle is available to inspection. The problem has been inspected by a GMC dealer. There were no warning lamps, messages or promts when the module failed. I had to have the failure diagnosed by the dealer to locate the failure.

The telematics control module became defective and could not communicate with the bcm and serial data gateway module, causing a check engine light, loss of onstar communications, clock, navigation, and remote vehicle-to-app communication. This part was known to be defective by gm. Gm replaced the part starting in 2021 on escalade models but not others. Service update # n212331730. The tcm became defective less than 24 months after purchase. The dealer stated the vehicle was over mileage for the warranty. The total repair cost was $1846, of which $1110 was labor. Replacement of the tcm was required to clear the check engine light.

•what component or system failed or malfunctioned, and is it available for inspection upon request? driver and passenger side rear view mirrors will not hold memory and auto adjust while driving at times. Been to the dealership 5 times. They could not repair and just said that a software update should fix it, but it did not fix it. I will program the mirrors to the preferred settings but when I re-enter the vehicle after shutting it down, it doesn't always retain the memory, and they go to random positions. This usually happens after 5 miles of driving the vehicle. The passenger side mirror will go down so I could see the curbs while in reverse but when I go into drive, it does not go all the way back up. I will be flying to visit family but the vehicle will be at a different dealership from 3/26/2025 to 4/1/2025. •how was your safety or the safety of others put at risk? after adjusting the mirrors, I left my garage with my kids in the car and started driving to our destination. While entering the highway, I went to check my driver’s side rear view mirror and noticed that it was pointed to a random position. In that moment, I was trying to match the highway speed to enter, there was a vehicle in front of me, a vehicle behind me, and a vehicle on the highway exit/entrance lane that I was trying to be cognizant of location to adjust speed properly. I ended up doing multiple shoulder checks which caused me to lose visibility of the vehicle in front of me multiple times. •has the problem been reproduced or confirmed by a dealer or independent service center? the dealership says they can not reproduce but I was physically able to show the service writer, he saw it happen. I also asked the dealership to drive it around after reprogramming it, but I don’t think they did drive it because after I bring the car home from the dealership, it starts doing it again. I have a service write up where the service writer says he say it occur. •has the vehicle or component been in.

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 shut off at freeway speeds (65mph) on 2 occasions. Driver was able to coast over to side of freeway both times. On 1st occasion chp protected vehicle from other traffic on I-5 with safety lights and traffic control. On second occasion, tow truck came quickly and kids were evacuated to prevent heat stroke in 113 degree weather. The first incident was “repaired” with a new starter and battery fuse block at 21720mi, but only lasted to 21814mi before same event occurred. No warning of failure before or after incident, just a dead engine. Second event (7/2/2024) is still being investigated by dealership.

The contact owns a 2023 GMC Yukon xl. The contact stated while driving 86 mph in the middle lane, the vehicle shut off on five occasions. The vehicle was restarted, the steering column was locked, and the brake pedal was depressed but failed to respond. The contact stated that the rear axle had disengaged. The suspension leveling system had failed. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed that there was an electrical failure. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was 39,000.

Approximately 14’000 miles we were told a rod went through the engine. Our vehicle failed at a high rate of speed leaving myself, wife, and 2 young children to pull off a major highway and call for police to help slow traffic. This happened while driving 70 mph on the highway. The only warning we received was when the car went from “d” drive to “n” neutral on the highway. Fortunately, we had enough time to pull to the side of the road before complete engine failure. GMC road side was not helpful. We were told we would have to find a ride home over an hour away, and when our ride arrived, so did the tow truck. Then, they had to drag the vehicle onto the flatbed because the tow truck company did not have the unlocking device for the wheels. Upon getting it to our house, the tow truck company had to rock our vehicle off the bed! we were not able to tow it where we purchased it. We either had to tow it to the nearest gm dealer or our house. We chose our house because the nearest gm dealer from where we broke down would've been over an hour away from our house. Our second engine failed 2200 miles later while my wife was sitting at a light in a busy intersection. The car again went from “d” to “n,” and it was immovable. The cops had to be called because the tow company couldn’t come fast enough. We were towed out of the intersection, but I waited over 5 hours with several dropped tows for a tow company. That occurred on my birthday. We are now on our third engine, and GMC wouldn’t warranty the engine. Our brand new tires went at 32,000 miles because GMC could not confirm or deny that rocking our vehicle on and off the flatbed three times didn’t affect the alignment. The front two tires inside tread was worn. I was told the tires from the factory are 50+ thousand mile tires. We barely got 32,000 miles. We’ve had multiple issues with electronics, back up camera, and media package. The lemon law won’t cover us because our first engine did not fail before 12,000 miles.

Dealer install illuminated sill plates gm part no. : 84667517 causing dangerous distracted driving since they do now turn off when the doors are shut and driving as advertised. Dealer double checked installation, but I feel gm installation need to be revised. See product description below from gm website: product information help give your vehicle a customized appearance water, uv and chemical resistant designed for a precision fit protect your door sills from scratches and scrapes kit includes four hardwired door sill plates for the front and rear doors features the denali script make your GMC shine with stylish soft lighting that creates a more upscale appearance automatically illuminate when door is opened and turn off when door closes.

I recently purchased my vehicle and after already transporting my family of 5, including my newborn child for several days, I noticed that my parking sensors were not working and I began receiving a message of my dash that parking assist, rear braking and auto park assist were unavailable. I reached out to gm around 4/4 informing them of the issue and they said they didn't have any recalls or retrofits for my vehicle and advised me to take it to a dealer's service deparment to be reviewed. After having an issue with simpson GMC of buena park of failing to even review my issue for a week, I took it to penske GMC of cerritos on 4/17 and they determined that during manufacturing of the vehicle, someone failed to connect the module that controls my parking sensors. They had to remove the front fascia of my vehicle to connect the module for everything to work correctly. This has forced me to call into question the quality control of gm vehicles and also concerns me that a car manufacturer would deliver a vehicle with such gross negligence where a consumer would not know the safety features they rely on to keep themselves and their family safe do not work. Gm customer service also never followed up on my issue even after calling and emailing them several times, which again calls into question how general motors operates their business.

While driving in a gravel driveway, the window curtain airbags and the middle console airbags deployed, with no collision what so ever causing injury to the driver and should you have a child this could have been very damaging as the airbags came out in all the way back through the vehicle. This incident was inspected by police and fire as onstar called them as it detected a collision, and without the vehicle being moved from the location the officer said there is nothing that should have caused the airbags to deploy, there is absolutely nothing here in this driveway that could have possible caused airbag deployment, the running boards go in and out, even when on the interstate constantly, and when backing up or going forward at times, and especially in a gravel driveway your automatic breaks will stop you abruptly, so fast that your seat belt will lock up on your and thrust you forward and backwards. The rear entertainment system will screen at times when turning it on will stay black and you have to keep turning it on and off to get a screen to show. No warning lamps or messaging with any of these cases.