Electrical System Problems of GMC Yukon - part 1

Vehicle status: brand new current mileage: approximately 10,000 miles incident description on 1/8/26, while operating the vehicle on the interstate at highway speeds with cruise control engaged, the check engine light began to flash. Simultaneously, the vehicle’s warning system issued an alert stating that the engine oil was excessively hot. Immediately after these warnings, the engine began to emit a loud knocking sound and lost all power, shutting off completely while in motion. I was able to safely maneuver the vehicle to the shoulder of the road. Post-failure observations upon inspection under the hood, I noted the engine was radiating extreme heat. I allowed the engine to cool completely before attempting a restart. While the engine attempted to turn over, it failed to start. Diagnostic alerts following the mechanical failure, I received multiple critical notifications via the GMC mobile app citing various engine failure errors. Summary given that this vehicle is brand new with only 10,000 miles, a catastrophic engine failure of this nature is unacceptable. The vehicle was being operated under normal highway conditions when it became inoperable, posing a significant safety risk. I am seeking a full diagnostic review and a permanent resolution under the manufacturer's warranty.

See all problems of the 2025 GMC Yukon 🔎.

I was driving on interstate and thank god I got off the exit and vehicle suddenly cut off. An indicator came on stating to push start to restart vehicle while the vehicle shifted to neutral on its own. Then a low oil pressure sign came up on dashboard. I tried push start again and nothing happened. Lucky by this time I was just off the exit so I was able to come to a stop and shift to park. I tried push start again and the dashboard just went dark and started making a clicking noise. After some time around 1 min I tried again and it did crank up and I was able to try and get as close the the edge as possible but still in a two lane road on the bridge of an off ramp. I say thank god because 30 seconds sooner I was going around 60mph with my 4 month old in the backseat. Lucky I got to the exit when this happened. From the research I have done apparently this happens a lot to this model I have 2024 GMC Yukon denali xl. I had a recall for this issues supposedly fixed back in October 2025. Things could of been much worse. Also this all happen coming from just having an oil change done at the dealer. Literally leaving the dealership going home. The dealership loaned me a vehicle they say for 3 days for free after that I may have to pay because it may not be covered by gm which is ridiculous. The vehicle is at the dealer and I will be waiting to hear there analysis.

See all problems of the 2024 GMC Yukon 🔎.

The vehicle shifted into neutral while driving, locked out gear selection, triggered a transmission warning, and now will not restart.

See all problems of the 2021 GMC Yukon 🔎.

The infotainment screen which controls the a/c, heating, defrost, cameras and all other info for the vehicle does not come on in th vehicle. This began happening after owning the vehicle for 3 days. After taking to the dealer, delray GMC, we were informed by the service personnel on our second trip in for the recurring problem that general motors knows this is a problem and are selling the vehicles with this factory engineering design defect and currently there is no repair. Living in florida this is a problem in the extreme heat with no a/c, being from illinois, when we return this will be a serious problem, not knowing if we will or will not have access to heat, cannot control the temperature or the defrost on the vehicle and having a infotainment center that is non functional. We consider this a hazard to our safety and feel that gm is fraudulently selling consumers defective vehicles knowing this may be a safety hazard.

Details of the issue: vehicle model: 2023 GMC Yukon problem description: the battery has drained completely on three separate occasions, leaving the vehicle unable to start and in cold weather areas safety is a concern. This occurs even when all lights and accessories are turned off, and the vehicle is parked for a reasonable period of time. The vehicle has been brought to the shop three times to address this issue. During one of these visits, a module failure was identified and repaired. However, the issue has occurred again since that repair, indicating that either the original repair did not fully resolve the problem or there may be additional underlying causes. Frequency: the issue has occurred three times to date, most recently on [insert date of the most recent incident]. Service history: the vehicle has been in the shop three times for this issue, and a module failure was identified and repaired during one of these visits. Troubleshooting steps taken: I have ensured that no lights or accessories are left on when the vehicle is parked. The battery terminals have been inspected for corrosion, and the connections are secure. [include any other steps you’ve taken, e. G. , "the battery was tested and confirmed to be in good condition. "] request for assistance: given the recurring nature of this issue and the fact that it has not been fully resolved despite multiple service visits, I would like to request the following: a more in-depth diagnostic to identify any additional root causes, including potential parasitic drains, alternator performance, or software-related issues. Confirmation of whether there are any recalls, technical service bulletins (tsbs), or known issues related to the electrical system or battery for this model. Consideration for extended warranty coverage or goodwill assistance to address this issue, as it appears to be related to a manufacturing defect. Since warranty coverage is up my vehicle cost is going to increase due to repeatable issues.

See all problems of the 2023 GMC Yukon 🔎.

Vehicle parked for extended period, 7-10 days, entered vehicle on 12/05/25 and proceeded to start - immediately service transmission appeared in display, check engine light on, dash flashing and door locks going up and down and chiming of alarms. Was able to place in reverse, backed up, put into drive and vehicle would move approx 5-8 ft, lock up and stop, start again and repeat, etc. . Put vehicle in low1 was able to get back in driveway and parked. Had vehicle towed to closest dealer who had a transmission specialist available and worked with gm warranty plus gm carbravo warranty to address issues (multiple dealers refused or didn’t have available personnel and/or were multiple weeks out for repairs). Called and advisor said I needed a new battery (22mo of a 36mo free battery replacement gm ac delco) and to have transmission valve body replaced and no tcm, 3-5 days for part delivery and that this was under a gm service bulletin # pip6069 (which I pulled up online), stated this repair (valve body) fixed most vehicles but knew of a few instances where complete gm 10spd transmissions had to be replaced. Glad this happened in my driveway versus while being on a long distance trip. Waiting on part delivery and unable to use vehicle due safety issue with transmission.

Vehicle: 2021 GMC denali mileage: ~48,000 miles purchase price: $62,000 issue: airbags & crash sensors failed to deploy complaint text: I am filing a safety complaint regarding my 2021 GMC denali. I was involved in a rear-end collision at approximately 45 mph, where I struck another vehicle straight on from behind. The impact was severe enough to total my vehicle, yet no airbags deployed, and no forward collision warning or crash sensor systems activated. This is especially concerning because this vehicle was previously involved in a front-end collision (not my fault) and underwent extensive repairs. I was assured all systems were repaired and functioning properly. Additionally, my vehicle had completed recall work related to safety systems prior to this crash. This is the second front-end crash involving this vehicle where airbags failed to deploy. Given the speed and severity of the impact, airbags should have deployed. The failure of these systems placed my life at serious risk. The vehicle has since been totaled and taken by insurance, but I am requesting that this failure be formally investigated as a potential safety defect in the airbag and sensor systems. I am extremely concerned that the vehicle’s safety systems were either defective or not properly restored following repairs and recalls.

Vehicle was operating on the interstate with cruise control activated. Time was approximately 9:15pm. Weather was fair with temperatures in the lower 60's. Speed was approximately 73mph. Without any audible or warning light notifications the engine stalled and all exterior lighting, power assisted braking and steering was lost. The emergency flashers were immediately activated to warn vehicles in nearby proximity of our emergency status. I tried to restart the engine(the transmission was showing to be in n)with no success. During the attempt to restart, the exterior lighting was restored. With the path of travel now visible, I was able to slow the vehicle to a safe speed and exit from the roadway onto the shoulder. Upon stopping, the vehicle was placed into p and onstar was notified of the event. We remained in the vehicle until one of our friends was able to take us home. Onstar contacted aaa to remove the vehicle to the nearest gm dealership.

While driving vehicle the vehicle appears to shut off as if someone is turning off the ignition. The steering control becomes stiff, power is lost and electronics flash and turn off and on. This has happened on multiple occasions and is intermittent during acceleration. The accessible grounds have been checked, battery checked and replaced, and alternator checked and verified to be charging appropriately. Several codes are present and have been cleared to return indicating low voltage issues with multiple systems.

See all problems of the 2016 GMC Yukon 🔎.

At stop light vehicle began to sputter and make noise, I was very close to my home, no engine light on. Upon turning vehicle off and using a code reader codes p0106 and p0506 was on scanner. I had vehicle towed to complete car care. Mis fire on multiple cylinders. Vehicle has 69,801 miles. 3 push rods bent and I valve spring broken. The right cylinder head assembly had to be removed and replaced with 8 new push rods, 8 new lifters, gaskets, seals, and valve spring. Cost was $3304. 79. In addition the rear tail light has been sporadic on and off, gm was to replace up to 70,000 miles. When I took it to them they stated the time limit had expired, yet I had not been informed until I did a google search. Gm requesting $475 plus tax. I am concerned my vehicle has the same manufacturing defects as the gm motors being recalled with total engine failures.

See all problems of the 2017 GMC Yukon 🔎.

At stop light vehicle began to sputter, run rough, and make noise. I was less than a mile from my home, no check engine light on. I turned the vehicle off, used a scanner to have codes p0106 and p0506 show. I had vehicle towed to complete car care. Misfire on multiple cylinders, 3 push rods bent, one valve spring broken. The right cylinder head assembly had to be removed and replaced with 8 new push rods, 8 new lifters, gaskets, seals, and valve spring. Total cost $3304. 79, the vehicle only has 69,801 miles on it. In addition one of the rear tail lights has a known issue (found out on google), intermittently goes out, was never notified. I took the car to jim hudson GMC to be told it would cost $475 plus tax because I did not come in early enough even though it is to be warranted up to 70,000 miles. I am greatly concerned that this engine has the same manufacturing defects of the current recall and extended recall for the GMC Yukon denali engines.

I’m not happy with just a change in oil viscosity because the car has already been on the road for 70000 miles before we were aware of the recall on the engine. Changing the oil viscosity doesn’t help when there is a underlying engine problem it should be replaced not just change your oil and send you on your way because now I’m always wondering and worried if the engine will still fail when my kids and wife are in the car. Furthermore I just had it inspected and the oil changed to new viscosity a week ago and the oil level is already half way on the dipstick so I’m taking back to the dealership to express my concern. If I would have known this was going to be an issue with this SUV I would have purchased something else. I’d just like the engine replaced so that I don’t have to worry every time I pull out of the driveway with my family. My power steering assist still whines and there is no open recall on it. I think GMC should be responsible for replacing engines and power steering assembly and power steering motors on 2021 GMC Yukon denalis because of the wear and tear they have endured before the recall was taken care of by adding a different viscosity oil because the damage has already been done.

Driving out a town 400 miles away, with a young passenger in my car on hwy 459 in rush hour traffic, I started hearing a slight ticking sound then moved into a full blown knock on my drivers side ( I recorded it). Within minutes, my oil light came on and my dash notification reading "engine overheating idle" with the knocking really load. I had to cross 3 lanes to traffic quickly to get to the shoulder of the road, which was not a safe place. I smelled smoke and cut the the engine off. I popped the hood to see that there was now no coolant (that is all I knew to look for). I immediately called onstar roadside assistance. 2 hours later, I was towed to a local hotel room. Car completely dead. Not lights, couldn't lock it, nothing. I had to pay a large fee (almost $2k) to have my car towed back to nc from al not to mention having rent a rental car to get us home. The car is now at a GMC dealership in monroe nc. Of course the powertrain extended warranty doesn't cover the battery replacement, belt replacement and water pump replacement so now I'm out of pocket $1300 just to get those install to be able to try and start the engine to further diagnose if my I have complete engine failure and without transportation.

See all problems of the 2019 GMC Yukon 🔎.

Electronics- module went out @40,000 brand new car drive train teal differential went out.

The contact owns a 2023 GMC Yukon xl. The contact stated that while driving approximately 25 mph and depressing the brake pedal, the vehicle failed to respond. Several unknown warning lights were illuminated, and the message "you have no brakes - do not drive over 40 mph" was displayed. The contact allowed the vehicle to roll to a stop. The contact turned off and restarted the vehicle, but the failure persisted. The contact parked the vehicle. The contact stated that the failure had not caused an accident because the contact was driving early in the morning and there was less traffic on the road. The contact stated that her husband started the vehicle later in the day, and the warning lights were off. The vehicle was driven to the dealer to be diagnosed. The dealer diagnosed the vehicle and informed the contact that several dtcs were retrieved, including a dtc for brake failure; however, the flow chart from the manufacturer instructed to first replace the battery and then reset the codes. The dealer replaced the battery, reset the codes and test-drove the vehicle. The vehicle was repaired and returned to the contact. The manufacturer was notified of the failure and supported the dealer's assessment. The failure mileage was approximately 70,000.

Driving through the intersection of n. Scottsdale road and e. Bell road in scottsdale az my collision warning red light flashed on the screen and the engine turned off. This caused me to lose forward propulsion and forced me to navigate to the side of the road to avoid being hit by another car. At van’s GMC, the service manager told me that we experienced a catastrophic engine failure and that the engine seized. Vehicle has been inspected, but I have not received an official diagnostic even though I have requested. There were no warnings or indications that the vehicle was compromised prior to the engine turning off.

The brake light is out and a single tail light is over 500$ very dangerous to have tail light out and can cause an accident. There should be a recall on these defective led lights.

Start transmission was replaced by dealer at 75 miles. 2nd transmission was replaced at 175 miles transmission was humming and slipped at around 30 to35 mph this was around April of 2024 August 1 2025 while driving at 45 dash board lit up went flashing and SUV slowed dramatically down to 30 mph got to dealership and they kept the vehicle for about a week and returned it with it being supposedly fixed. About mid October while driving at 60 mph it shut down again almost causing a wreck went to 30 miles per hour again. Hurt my wife’s neck when it reduced speed so quickly. Took back to dealership and I told them this car is dangerous this was with about 20 k miles been in shop was told it is scanning with 22 repair codes we have not had the car for 5 weeks and are trying to work with gm and dealer to get us out of it. But as of this report no progress. On interstate in city traffic this car will hurt or kill many people. I’m refusing to let my family or myself drive it. There is no warning when it will flash lights in dash and reduce speed. Also the front crash sensors went out and are currently not working we have all service records and paperwork that has been done including maintenance records we were given vehicle back with no warnings. I went to nita’s and ran VIN and it still shows issues. We are still making payments but driving a loaner car. The car is dangerous. I advised the dealer the first time it happened. I didn’t want it back. My wife went and got it and it sis it the second time and now she agrees it is dangerous contacted gm and they want to fix it but dealer implies they can’t ?. .

My vehicle, with only 2,400 miles on the odometer, has been diagnosed as requiring a full engine replacement. While driving on the interstate, a warning message appeared indicating reduced acceleration. I was able to exit the freeway safely, but the vehicle could no longer maintain adequate speed to match traffic flow. Prior to this, the check engine light came on, but no issues were reported in the vehicle’s status system. I contacted onstar, and they advised me to take the vehicle to a dealership within seven business days. It has since been at the dealership awaiting parts. Upon further research, I discovered that this issue appears to be widespread. General motors has issued a technical bulletin addressing the problem, which involves complete engine replacement. Additionally, the audio system intermittently emits a loud crashing noise that is startling and potentially dangerous—it has caused me to veer off the road due to its intensity. This issue also seems to affect other 2025–2026 Yukon and tahoe models.

Classic Buick GMC (classic elite Buick GMC – katy) filed [xxx] [xxx] [xxx] phone: [xxx] email: [xxx] date: November 23, 2025 texas attorney general – consumer protection division summary complaint – vehicle misrepresentation, unauthorized charges, financing fraud & warranty violations dear attorney general, I am filing this complaint against classic Buick GMC (classic elite Buick GMC) located at [xxx] , for multiple violations of texas consumer-protection laws during the sale and follow-up service of a vehicle I purchased in March 2024. Summary of violations 1. Misrepresentation of vehicle model year I was sold a 2023 GMC Yukon denali that the dealership falsely represented as a brand-new 2024 model, including on the key-tag. This violates texas occupations code §2301. 351(a) and dtpa §17. 46(b)(5), (7), (24). 2. Unauthorized add-ons & hidden charges the dealership added $8,000 in accessories and $26,000 in warranty products without my consent. This violates dtpa §17. 46(b)(12). 3. Financing fraud I was promised 1% financing, but the dealership charged a significantly higher rate at closing without disclosure. This violates the truth in lending act (tila). 4. Warranty refusal & pre-existing damage although the vehicle had defects and mechanical issues at delivery, the dealership refused to repair them under warranty unless I paid. This violates the magnuson-moss warranty act. 5. Failure to provide required documentation the dealership refused to provide complete purchase documents, violating texas administrative code §215. 142. 6. Pattern of evasion I personally visited the dealership three times, yet management refused to correct any misconduct. 7. Unsafe vehicle retained at dealership the Yukon remains at the dealership due to mechanical/electrical defects. I refused to pick it up because the vehicle is unsafe and not as represented. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Onstar module is disabled, this is a key safety feature, one of the reasons I purchased this vehicle.

See all problems of the 2022 GMC Yukon 🔎.

Purchased 2023 GMC Yukon on August 21, 2025 and after starting the vehicle on October 2, 2025 the whole instrument panel cluster malfunctioned, failed to turn on, currently does not work and is available for inspection upon request. The instrument panel cluster is all black, it shows glitching flashing white lines on the right side of it therefore being unable to read the speedometer, fuel gauges, tire pressure, oil life, engine temperature, etc. . Prior to the instrument panel cluster malfunction, there were no warning indicators. Being unable to view the instrument cluster, makes the vehicle hazardous & risky to utilize for me and my family. This vehicle has not been confirmed or inspected at this time.

Dash cluster lights that show how many miles are on the vehicle and prnd do not light up.

See all problems of the 2007 GMC Yukon 🔎.

My vehicle experienced a sudden and complete loss of onstar and telematics functionality during or immediately following a routing/software update. I had taken my vehicle in for my engine recall and noted another software update was required and specifically was told by multiple service members over the phone that the onstar services/telematics module was impacted and this update should resolve it. After some initial research it appears this is related to n212331730, which impacts onstar and telematics services. I brought the vehicle to an authorized GMC dealer for the recall. After inspection, the dealer informed me that the telematics control module has failed and must be replaced. This failure resulted in the loss of all onstar safety-related services, including emergency response and vehicle communication features. The failure appears directly related to the recall condition or software update process, yet I am being told the module replacement is not covered. This creates a safety concern because emergency communication systems required for crash response and roadside assistance are nonfunctional. I am concerned that the recall remedy may be causing or accelerating telematics module failures and that affected vehicles may be left without critical safety systems unless owners pay out of pocket.

Tthe dealer ship refused even talk to me.

Windshield needs replacement – one side window installed incorrectly (huge gap) •trim peeling (inside and outside) •heavy rust in engine area •sunroof seals need replacement •all window tints need replacement •headlights not aligned – need new ones •taillights not aligned – need new ones •spoiler damaged – needs replacement •dashboard feels loose – needs replacement •door panel misaligned •rubber gaskets/seals smushed •seat covers smushed (from dealer) •paint peeling (sunroof, edges near wheels) •plastic components worn / damaged •front bumper misaligned •two front fenders need replacement •tow hitch cover needs replacement •cargo protector installed on exterior trunk sill •check engine / transmission alert showed in app (vehicle displayed “check 4x4” while driving) •bluetooth system not working everything on this car is not aligned this is a huge safety hazard on everything electrical,engine,visibility they won’t take responsibility they said they don’t have no update on recall it’s 7 months and the nhsta all won’t take responsibility I contacted them multiple times they just say contact gm for recall info 7 months.

Onstar module bad.

Keep quit working when I was driving , I just pick up from delearship for I another issue with on-star and is not part available is been there for over month not fix and now the brakes issue.

I attempted to start my vehicle and it turned over and at the end of trying it sounded like it wanted to start. This repeated itself with no change. I contacted the dealer which I purchased it from and the service mgr said it was the fuel pump control module. Numerous 2021 Yukon had this problem and there is both a service bulletin and a recall for this part. N212332040. My vehicle is not on recall. I attempted to have it towed to the local chevy dealer and was unable to as no local tow company had the tool to put the transmission in neutral. They all wanted to drag it onto the trailer. Bad design that it can not be put in park if it’s not running. I purchased a replacement fuel pump control module part 13554821 from the dealership. I installed it and the problem was fixed. I have the defective part if needed. This would have been much more of an issue if it happened anywhere other than my house, especially with the inability to put he transmission in neutral !!.

I'm reaching out because I've encountered a really concerning issue with my 2025 GMC Yukon at4 ultimate. There's a really loud popping noise randomly coming from the speakers that's honestly quite startling and dangerous while driving. Most recently, it scared me so much that I swerved off the road and nearly crashed. If you review online forums, you will find that this has been experienced by other owners as well. I've tried to resolve this through your usual service channels, but my concerns have been dismissed without any recommended action to ensure my family's safety. After scheduling with my local GMC dealership they couldn't replicate the noise and sent me on my way. I also brought it up with GMC customer care, and they suggested I try to record the sound, or keep bringing it in for service if it happens again. The problem is if I tell them it keeps happening again, what good will it do? it's a loud pop coming from the back speaker area. Even if they had 7 technicians hearing it at the same time, how will that make a difference. I need them to start testing components and replacing them one by one until its resolved.

I am the owner of a 2024 GMC Yukon (VIN: [xxx] ), purchased from hatchett Buick GMC on [xxx]. This vehicle was purchased at a high price with the expectation that it would provide reliability and keep my family safe. Unfortunately, that is clearly not happening. The Yukon continues to suffer from severe power loss that neither the dealership nor gm technicians have been able to diagnose or repair. In addition, this vehicle is subject to an unresolved engine recall, further undermining safety and confidence in the vehicle. Multiple times while driving I have had total power loss with no warning or indicators of this happening through lights or warnings on the vehicle. This is separate from the engine recall issues I am currently experiencing as well. While driving the Yukon will lose all electrical power. The vehicle is still currently at the dealership trying to be diagnosed. It has been 2 weeks. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

We brought my 2023 GMC Yukon into parks GMC in greenville SC on July 26, 2025 for the engine recall that we received a letter from. We left it as we were going on vacation for the week and picked it up the following Saturday August 2nd. The next week my engine light started lighting up and my husband contacted the dealership and we were asked to bring it back in. We did and were told that we now had a bad telematics communication interface control module that was causing my engine light to come on and that we were going to have to pay $600. 00 out of our pocket to have this repaired. After researching we found that this is a very common and widespread problem with a lot of owners right after they bring their vehicles in to be serviced. We declined the repair, one because they did not have the part in stock as that apparently is also a big problem of not being able to get the part in stock and two because we feel like we should not have to pay to have this part replaced as it appears to be a widespread issue that is happening. The dealership also charged me $182 for diagnostic charges that I once again feel like we should not have had ton pay. Please advise us ASAP. Our contact info is [xxx] [xxx] & [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I have had problems with the navigation system where the screen goes blank. The radio is not responding and screen is black. When turning on the signal light you can't hear it. The speed limit in my town is 25 and after an update from the dealership it now says 55. I get an alert saying frontal crash not available atleast once a month. There are times when we are driving and we get the red alert as to detecting an object and there is nothing there. Parking assits does not work all the time.

Vehicle has 56000 miles currently and at 47000 transmission had to be replaced due to defective valve body. At 56000 miles, motor was replaced due to broken lifter. The vehicle currently will not start.

2025 Yukon denali - purchased in July of 2025 specifically to pull air stream trailer. Vehicle was equipped with necessary tow package for this purpose! #1 problem: went into limp mode, stopped in traffic, towed to dealer. One week to repair and replace fuel system. ( under 700 miles ) #2 problem: went into limp mode while pulling trailer, vehicle lost all the transmission fluid on ground. In shop sixteen days waiting for new transmission parts. ( under 700 miles ) #3 problem: vehicle stopped in traffic, towed to dealer where it was determined it needed new engine. In shop Nov 27, 2025, still in shop as of Jan 14, 2026. No eta on engine or delivery. ( under 2000 miles ) #4 problem: during last failure attempt to use "on star" failed, still not resolved. This vehicle is a danger to the owner and its passengers as well as others when it simply stops working in the middle of a busy highway with a 23' trailer in tow. Not to mention I have $160,000 invested in a car and camper I have yet to be able to use.