Electrical System Problems of GMC Yukon - part 2

What component or system failed or malfunctioned, and is it available for inspection upon request? the engine suffered a catastrophic failure, including a bottom-end bearing failure, causing the camshaft to seize, the flywheel to shear off, and metal to spread throughout the engine, cooling system, and radiator. This also tripped the main fuse, resulting in an electrical short. The failed engine is currently at the dealership and is available for inspection upon request. How was your safety or the safety of others put at risk? I was driving on a 55 mph highway when the engine completely shut off without warning. Losing all power while traveling at highway speeds was extremely dangerous, and I was barely able to glide the vehicle to the side of the road before it lost momentum. It is terrifying to think of what could have happened had I not been able to get out of the travel lane in time, especially with other vehicles moving at high speeds around me. Has the problem been reproduced or confirmed by a dealer or independent service center? yes, the dealership diagnosed the issue and confirmed the engine failure. They have determined that a full engine replacement is necessary. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? the vehicle has been inspected by an authorized GMC dealership service center. I have not yet had it inspected by any other parties. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? no warning lights or messages appeared before the engine shut off. The failure was completely sudden and unexpected, with no prior symptoms or indications of an issue.

See all problems of the 2024 GMC Yukon 🔎.

I constantly get the frontal crash not available warning the navigation picks up on conversations stereo freezes navigation screen has been blank no map data visible screen will not change from daylight to nightime anymore (I have taken the vehicle twice to the dealership and have it repaired then it happens again) when driving the vehicle will randomly brake and says something is near when there is nothing close.

While driving on the highway the engine just shut off with no warning or other indication of problem. The dashboard computer instructed to restart the vehicle, which it would not restart. Managed to get to the side of the road. But the vehicle was unresponsive. After about an hour the lights in the rear of the vehicle flickered, so I attempted to re-start -which it did, and was able to drive the vehicle to the dealer (about 20 miles away). Where the car remains today. The incident occurred Feb 2. Took the dealer until 2/6 to advise me that the engine would need to be replaced. At that time they indicated they would need to car for about 2 weeks. I contacted them on 3/3 and they informed me they had no idea when they might be able to get the parts to replace the engine - there was a 3,000 engine backlog? clearly there is a major issues with these engines; how are they allowed to continue to sell these vehicles, and allow current owners to operate them without a notice? while I was fortunately able to get to the side of the road - have in the car lose power suddenly lose power is clearly a safety issue!.

See all problems of the 2022 GMC Yukon 🔎.

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.

See all problems of the 2023 GMC Yukon 🔎.

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.

I was driving my car Monday and I almost crash with the car in front of me the brakes doesnt work and then in the panel start lights of the engine the supension light and sigh saying brake asistant, the car is park because the brakes and I look for recalls and I call GMC and they says that I dont have any recall but I almost die Monday because the vacum pump for the brakes fail and all the lights in the pannel start light up.

See all problems of the 2016 GMC Yukon 🔎.

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).

2024 GMC Yukon with less than 2,000 miles decided not to start one day. Had a tow truck come to the house and pick it up to take to a local shop to get a new battery. Replaced the battery and the battery shop delivered to car back to our house and was totally fine…the next day we went to start it and again the battery was toast. So, got another tow truck to deliver to the dealership and had it checked out, the dealership says there are 12 codes popping up and they can’t figure out why the batteries are not holding at this point. This is a diesel Yukon. We had a 2022 escalade that the motor went belly up on us 3 times before we bought this diesel Yukon thinking this problem would go away but I guess I was wrong. I will be returning this Yukon to the dealership and doing a buyback. We have been stranded way too many times with these gm vehicles and I’m starting to loose trust with general motors.

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.

Traveling north bound on highway 14 in southern California on January 24, 2025. In the fast lane traveling approximately 70mph when with no warning what so ever the vehicle shifted into neutral and lost power. Nearly rear ended trying to get out of traffic and to the right shoulder. Once stopped the vehicle would not start, stuck in park, and could not turn the electronics off. Stuck in vehicle for 3 hours because it was too dangerous to exit vehicle. Tow truck arrived. Tried to jump the battery which by this time was dead. Had to drag the vehicle up the flatbed with wench do to vehicle unable to shift out of park.

While accelerating up to 55mph, the vehicle automatically shifted into neutral without warning. We tried to shift it back into drive, nothing happened. We pulled off the road to try and shift in a reduced speed and still nothing. We finally came to a stop and tried to shift it into drive, still nothing. There was an error message: “conditions not correct for shift”. We place vehicle into park, turned off the engine and tried to restart. The engine wouldn’t turn over. A police officer stopped and tried to jump the battery, nothing. The dashboard and lights turn on, but there was zero turn over with the ignition. We continued to try it to no avail. We had a tow company come and unplug the battery to try a system reset, and still nothing. Car was towed with no ability to get it into neutral.

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.

Roughly one to two times per day, a notification pops up on the infotainment screen stating that the brakes need to be serviced due to the brake assist system failing. The vehicle has been brought to 3 different dealerships and none of them know what the problem is, how to fix it, or whether it is safe to drive the vehicle still. The brakes seem to be working fine, however, it is concerning that even if the notification is safe to ignore, the brakes could indeed end up failing and the driver may not be aware due to receiving frequent brake failure notifications per day.

In July of 2023, my wife and kids were driving to san diego from phoenix. About 40 miles west of el centro, CA, all the lights on the dash came on instructing her to pull over. When she pulled over and shut the car off, it would not come back on. Got towed back to a gm dealership in el centro. The diagnosed it with a bad radiator and failed engine. The replaced both(at roughly 30,000 miles). The car was fine for about six months and then it started getting battery drains again, which continually happened starting a few months after purchasing the vehicle. They never could figure this part out. Anyway, early January of 2025, while driving back to phoenix from san diego, the car did the same thing. This time, it restarted and she could continue on her way home. On [xxx], while driving in town, the same thing happened, all lights came on, pulled over and car would not restart. It is diagnosed with the same issue. It has been in the shop at van GMC since January 12th, 2025 waiting on a new engine, at 63,000 miles. This will be the 3rd engine in the vehicle. By looking online, this appears to be a common issue and happens more than it should. This needs to be addressed. My wife has our kids in this vehicle a majority of the time and this is a major safety issue. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Complete failure of infotainment system in cold weather. This is a safety concern because most controls are operated through the infotainment system and can DE distracting to a driver who is trying to operate all features of a vehicle while driving. For instance having cold children in the rear seats and not knowing if the heat is activated in the rear of the vehicle and at what temperature or if it is blowing at all. There is no manual indication of rear climate. This is already a safety bulletin for 2021 Yukon that for some reason my vehicle is not included in. Gm recall number: n212327470 I want my vehicle included since this is a safety concern ( see above ) and this should be a real recall rather than a notification or safety bulletin.

See all problems of the 2021 GMC Yukon 🔎.

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.

Since purchasing the vehicle in September with 8 miles there have been several electrical malfunctions. Some “fix” themselves when I restart the vehicle and several have needed to go into service. The first issue was when my mirrors wouldn’t come back up when switching to drive. I disabled the reverse tilt option and had it serviced to be fixed. Apparently it needed an update. More recently I had several malfunctions. My vehicle would lower its self while still in gear, and it wasn’t the normal self leveling. I didn’t not have any warning lights or messages pop up. The next time I started my vehicle and had “service rear axle” warning. I called the local dealership and after restarting the vehicle several times and more error messages, I decided to attempt to drive the vehicle in, all the while recovering several message warnings. On the way I was increasingly loosing brakes and I rolled into their parking lot with no breaks. Since this episode I have had repeated lost connection codes without dash warnings. They first attempted to reprogram the brake control monitor. Then when it continued to lower itself and have other malfunctions it went back into service. They replaced the serial data gateway and reprogrammed it. Since then the vehicle is having lost communication codes every day. It is currently in service to try and figure out what’s causing it and hopefully fix it.

We received an alert/warning that is nearly constantly beeping and servicing the trailer brake system. We have never used the wiring or towed anything, and the trailer brake system is unused. The beeping is near constant, even after we “dismiss” the alert and is very distracting when driving.

See all problems of the 2019 GMC Yukon 🔎.

Two weeks ago, while driving on the highway, our Yukon suddenly quit accelerating and flipped into neutral. We had to quickly pull over to the left shoulder with our entire family. We put the vehicle into park and tried to restart, which it wouldn’t do. We ended up having to call onstar and having it towed to the nearest dealer. They “repaired it,” yet a week later, the same thing happened while pulling up to a stop light. This time we were 4 hours from home and on a weekend. While waiting for a tow truck, the police towed it to an impound lot. Lots of money, time and red tape to get it out of the impound lot to the nearest dealer to have it looked at. It’s been there almost a week and all I’ve heard is that it’s most likely the motor but they still haven’t confirmed.

Aside from constant electrical issues with the serial gateway module that gm refuses to replace many safety features fail regularly most importantly this replacement Yukon for the 2023 with engine issues also has engine issues and the same 6. 2l engine. When leaving my home and or driving on any decent up or downhill road and coasting the vehicle will misfire and trigger the mil to flash. I’ve taken it into the dealer many times for this and in the end they say it’s a software problem with afm disabling 5 cylinders. They claim that the geometry of the vehicle along with having 5 cylinders disabled causes the engine to vibrate enough to make it think it’s misfiring. This came from their factory field service tech. They refuse to fix it. They refuse to put this on paper. They told me if I wanted it fixed, I could buy a 2025 instead. This is insanity.

I am writing the NHTSA to advise of a harrowing event involving the vehicle named above. I was driving my 2022 Yukon vehicle equipped with the 6. 2l ecotec3 v8 l87 engine. As I was traveling, the vehicle suddenly without warning shut down. When this occurred all systems in the vehicle became completely inoperable; I. E. , no power steering, no power brakes, nothing, etc. I was lucky to be able to veer/coast into the emergency lane without incident. This situation also caused the vehicle to become almost un-towable, in that the towing company could not get the vehicle out of the park position to allow the wheels to rotate. They had to use special skid plates / devices to essentially force the vehicle to slide instead of rolling onto the towing vehicle. This added significate hazard and risk of injury because of the problematic situation of loading the vehicle in this manner literally inches from the active travel lanes and took much longer to load than it would have otherwise. The vehicle was towed to the local dealer. The dealer replaced the fuel module and returned the vehicle. This information is being sent to gm as well. After this event I was concerned for driving the vehicle but now after reading about the recent NHTSA investigation into engine failures I am much more apprehensive about driving the vehicle. Even if nothing happens individuals who have these vehicles have now lost significant value and face a very difficult time even being able to sell their vehicles at all, or at a much lower price than normal because of the known defects. I hope this helps the NHTSA to further their investigation of gm’s defective vehicles and get these vehicles repaired and/or replaced in a timely manner before tragedy strikes any individuals.

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 car has all of a sudden had issues with the gas and breaking. When I press the gas, it stalls then rapidly accelerates. It has to be the transmission. Also, is making a noise and will barely drive when pressing on the gas. It does not accelerate!! could have easily gotten into a car accident! what is going on??.

My transmission began having problems the day it was delivered to me. After the oil change which they delivered to me at low percentage was completed the motor was ticking. It has had a burning smell and has been in and out of the shop and going back soon. I was on the expressway and the speed declined with error messages on the dash almost resulting in an accident. No one is listening to my concerns and now the motor has a metal clinking noise.

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.

When vehicle is turned on or during normal driving, audio volume randomly goes to full high mode (all the way up) to a deafening level that makes it difficult to drive. The knob, steering wheel controls and any connected devices (like the phone) do not control the audio. Audio setting is completely unresponsive and will not turn down. It is not possible to drive in this condition. I had to pull over and turn my car off. I turned it on and off several times before the audio did not come on full blast and I could safely drive my car. This is the third time this has happened to me. Two out of 3 times I had a young child in the car.

While on a red light and foot on the break, the car turned off completely and would not turn back on after many tries. Truck was towed but mechanic did not find any issues with vehicle as he turned it on with no issues. All lights flashed and indicated battery was low but was not warned prior. The previous week, the truck shut off completely as well but it turned on quickly.

Loses power randomly. More prominent at low speeds and turns. Has lost power going down the road, will turn back on. Stabilitrak lights and jerking steering wheel are more common. Will not always start right back up when it shuts all the way off/loses power. Loses clock but keeps radio stations. Had it scanned. Asked dealer about issues/recalls and information with nothing more than “this is not common” and “we need to schedule a time for you to bring it in”. Times were not soon and they made it seem like it is not an urgent/emergent situation. Would not agree to me being able to talk with a tech. Looked into this as it seems common but nothing definite. Bad battery cables seem prominent, grounding issues, electronic steering module, and a few others. Seems like a gm problem that is known but not being handled. Greatly disappointed after reading up on it. Many vehicles with similar problems had recalls. Not sure how that process works. I was told it depends where it was manufactured/assembled. Wife was able to get a video of it the other day.

Defective wire harness between 2 body control modules, causing alarm to go off repeatedly "service trailer brake system" and also "stabilitrack" will come on randomly and lock my brakes up and all of the features in my dash. This has been very scary to drive and has brought the vehicle close to collision more than a handful of times now.

See all problems of the 2015 GMC Yukon 🔎.

We just purchased this vehicle from winegardner GMC in prince frederick, MD. On [xxx} on our drive home from the dealership, we kept hearing a terrible screeching/ clucking noise coming from the rear when we were braking or applying any pressure to the brake pedal. We instantly contacted the dealership and they had us bring the vehicle back the next morning for them to look at and to make the repairs but unfortunate for us. They do not have the parts in stock, so we have to take it back Tuesday, October 8 , 2024 at 8am and leave it for the day. Hoping it is repaired correctly with the new parts “both rear calipers” as I left the dealership, I was approximately 10 miles away and out of no where my dash displayed “service, trailer, brakes”, constantly along with a loud dinging noise for the rest of the drive home. I contacted the dealership and spoke with the service manager and informed him of the situation. He told me it has been an ongoing issue with gm for years and it’s electrical and because we purchased a used vehicle. It’s not covered to be repaired. We would have to pay out-of-pocket for it to be fixed. This is very upsetting because we just spent $40,000 on a used low mileage Yukon denali for our family to travel in, but it’s unsafe, because it affects the traction control, and abs brake system. I would also like to note that I did not have a trailer hooked to the vehicle, so I do not understand how that service indicator would appear unless it was cleared by the dealership during maryland state inspection. We have asked them several times for a copy of the maryland state inspection they performed, and we are getting the runaround. As the purchaser of a vehicle, it is all right to have that document, showing what past and what failed maryland inspection before being resold to us. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2018 GMC Yukon 🔎.

I have a service suspension light that continues to pop up on dashboard the most important issue that needs to be addressed is the brake lights. I have previously had the passenger side brake light stop working. In order to repair this you have to order a whole new taillight. My vehicle was approximatly 6 years old when this started happening. First incident (2022 with approximately 65000 miles) yesterday, I was pulled over by a policeman and both of my brake lights are not working. We found a way to sauder (I know this is incorrect spelling) the broken metal piece back together in the taillight; however, this is not the correct way to fix the underlying problem and clearly it is only a temporary fix because the passenger side broke again in a new spot.

December 28- transmission goes bad, gets vehicle back Feb 17th - •dangers include loss of vehicle control, wreck, cannot hit gas pedal. March there’s an exhaust leak. •inhaling is dangerous as this contains carbon monoxide, potential fire, may y axle on muffler •dangers include reduced engine performance that can lead to wrecks, carbon monoxide poisoning, and failed emissions test. July engine failure in repairs until August •can cause accidents August coolant leak •can lead to engine overheating and lead to engine failure causing accidents. September unknown reason, car just keeps shutting off while driving. •dangers in this one speak for themselves. Inspection can be done. Problems were confirmed but just keep continuing to occur. No warning signals, car just keeps breaking down for various reasons.

I keep getting a warning on my display on dash about my trailer brake system is not working. Also my temperature gauge stops working and I have to take off negative cable on battery to reset it. Temperature control sensor has been replaced but the problem still continues to happen.

1) wiring harness to the wireless charging pad on the center console that is wired through the door hinge. Shorts out when opening or closing center console. 2) caused a fire that led to smoke and melted components inside center console hinge. Caused smoke and awful plastic burning smell while my kids and I were parked. I had just started the vehicle. My two kids and I had to jump and run from the vehicle. 3) no, but by many forums that dealers and mechanics are aware of this issue and charges you hundreds to fix it when it is manufacture error. 4) this vehicle has been inspected many times. By all the other inspection laws missouri has in place. How has it gotten passed many times with this known issue? 5)no! this put mine and my kids life at risk. It is a known and wide issue yet no one takes this seriously. As it just affected me and my two children, I hope this is taken seriously. Hold manufactures responsible and dealers for selling vehicles with these known issues. Protect people.