Other Fuel System Problems of GMC Yukon - part 1

On xxx, at about 2:49 pm eastern, I was merging onto xxx from [xxx], accelerating hard at about 70 to 75 mph, when the dash displayed "press start again," the tachometer dropped to zero rpm, and the engine shut off. I crossed to the right-side breakdown lane and stopped. The engine then restarted. No crash or injury occurred. The truck has approximately 68,000 miles. I bought it used in xxx. The recall 25v-274 inspection was completed at the GMC dealership in [xxx] (I do not know the date). The dealership found nothing wrong and only changed the oil to 0w-40. On xxx, the day after a 65,000-mile service, the battery was completely dead (9. 32 volts at rest) after a three-hour drive home the day before. The battery was replaced xxx. The charging system has not been diagnosed. I do not know whether the shutoff is related to that event or to the l87 engine failures. The vehicle lost motive power at highway speed under hard acceleration after the recall work was completed. It is going to the dealer for diagnosis. Please add this report to the file on post-remedy loss of propulsion in gm vehicles with the 6. 2l v8. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2023 GMC Yukon 🔎.

During normal acceleration on the interstate entrance ramp, the vehicle stuttered and continued on seemingly without issue. Within a few minutes, I noticed the check engine light flashing and fluctuating oil pressure, and I drove cautiously to the closest mechanic shop a few miles away. The code (p0307) indicated a cylinder 7 misfire, and I was referred to the dealership for further diagnostics. The dealership determined the lifters failed resulting in damage to the camshaft, which they reported is a very common problem with the 5. 3 l engine. The repairs were quoted in excess of $11,900. This sudden failure at highway speeds poses a safety risk to the motoring public. Furthermore, the consumer should not foot the bill for gm's manufacturing defects. This information is provided in the hopes that a recall is initiated.

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While stopped in a parking lot. I returned my vehicle to drive home, and the car would not start. I had it towed to the dealer. They did a diagnostic inspection for "crank-no-start ". Two trouble codes: p0340 intake single camshaft ignition sensor circuit and p00c6- fuel rail pressure load during engine cranking. Performed diagnostic checks and suspect a broken timing chain and timing tensioner that causes the bottom of the engine to free spin while the top 0. 5 does not. These engines are known as interference engines, and anytime there is a mismatch between the top 0. 5 and the bottom 0. 5, there is the potential for catastrophic failure due to the design of the valve train and bottom 0. 5 of the engine. The technician suggested a full engine replacement. I went to the dealer and spoke with the service manager, greg, and he stated that he would reach out to GMC because the VIN number was not part of the recall, although the year/make/model is. I also reached out to GMC to open a claim. To date, I have not heard back, and they have not yet accepted responsibility for replacing the engine.

See all problems of the 2021 GMC Yukon 🔎.

The engine of this car failed at high speeds on interstate 64, in virginia, at 40,000 miles. GMC claimed the lifters in the 3rd cylinder failed and they were replaced under warranty. The lifters in the 3rd cylinder failed again, at high speeds on interstate 81, at 77,000 miles. GMC claimed the lifters and crank shaft needed to be replaced. After paying for the repair and getting the car back, the engine locked up and failed within 30 miles of being fixed at 77,000 miles. Prior to these issues, there were no warnings and no symptoms. The car supposedly was not included in the engine recall by GMC. Two of the three incidents happened at speeds of 75 mph, the third occurred on a highway and speed of 55 mph.

**mileage at repair:** 76,165 miles **component:** fuel pump power control module while driving my 2021 GMC Yukon xl on [xxx] on a treacherous stretch decending [xxx] the engine unexpectedly stopped running, resulting in a complete loss of propulsion. This occurred on a section of interstate where there was no safe shoulder or suitable location to pull off the roadway. The unexpected failure created an extremely dangerous situation, exposing me and other motorists to the risk of a serious collision. The vehicle was subsequently towed, diagnosed and repaired by darrell waltrip Buick GMC in [xxx]. The dealership documented diagnostic trouble code p129f, "fuel pump driver control module fuel pump speed signal incorrect. " the technician verified that the control module had proper electrical power, that there was no pin damage or connector fitment issue, and that the module required replacement. The dealership's written diagnosis specifically acknowledges that a failing fuel pump driver module can cause the engine to shut down. The original factory-installed module was replaced with gm part number 13554821, and the vehicle was subsequently tested and confirmed to operate correctly. The repair was performed at no charge, and gm provided a loaner vehicle while the replacement part was unavailable. I am particularly concerned that general motors has previously acknowledged this same type of safety hazard under NHTSA safety recall 21v-739 (gm n212332040), involving fuel pump power control modules on certain 2021 gm full-size suvs. That recall identifies unexpected engine stalling and increased crash risk as consequences of module failure. My experience demonstrates the potentially catastrophic consequences of this failure in actual highway operation. I request that NHTSA investigate whether a mandatory recall and replacement of these defective components is necessary as the consequences of immediate complete unexpected loss of propulsion. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C.

Incident 4: fuel injector internal short (cylinder #6) component / system failed: fuel injection system / cylinder #6 fuel injector & wiring harness failure description: cylinder 6 fuel injector failed due to an internal electrical short circuit, causing immediate engine misfires and severe power reduction. Repair required replacing the bank 2 fuel rail, four fuel injectors, and the injector wiring harness. Safety risk: immediate engine shuddering and abrupt drop in drive power while operating in active traffic creates a serious loss-of-acceleration hazard and heightened risk of a rear-end collision. Dealer / repair shop confirmation: official diagnosis confirmed by service center technician via electronic diagnostics verifying the internal electrical short circuit. Warning symptoms: check engine light illuminated simultaneously with engine shaking and sudden power loss; no prior symptoms existed before the failure. Inspection availability: confirmed via technician diagnostics; check engine light illuminated along with four other warning lights- car had to be towed to dealership to be fixed.

The component that failed was the fuel pump control module, which the dealership currently has in its possession. While driving on the interstate at 70 mph with my family of five—including three young children—the vehicle suddenly lost all motor power. This left us stranded on the shoulder for three hours waiting for a tow truck, completely without heat or ac. Once the vehicle was towed to the dealership, they confirmed the fuel pump module failure. There were no warning lamps, error messages, or prior symptoms; the engine simply stopped running. Fortunately, there were no injuries or crashes, but that was solely because I was lucky enough to safely maneuver across four lanes to the shoulder just before an exit. It was an incredibly dangerous situation that could have been much worse. I contacted gm customer service, but they stated they could not and would not do anything to assist with the situation. I have retained both the official dealership repair invoice confirming the failure and the tow bill from the incident.

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My 2022 GMC Yukon suffered a complete failure and open circuit of the fuel pump power control module, causing the vehicle to fail to start. This is the exact defect covered under gm recall n252516900/n262558690. However, gm is refusing to reimburse the repair because they have arbitrarily excluded my VIN from the recall population. Gm is failing to recall all affected vehicles experiencing this safety hazard.

I was driving and the engine light started blinking. The car started to lose power. I had to pull off the road. The blinking stopped and then I was able to get home. I had it towed to the dealership, where they told me this was a known issue with the afm valve train system. This is a known issue and I was not made aware of it and continued to drive my car with my children inside of it. Had I known, I could have had it assessed for the potential issue. But now, it is too late! I am now being told I need to pay $17,000 to replace my engine. Something that could have been avoided if I had known to watch for any issue. But I was never warned. And now I have no car, still have car payment and no help from gm, GMC or anyone else. I know you cannot help me get this fixed, but maybe you can prevent this from happening to someone else.

See all problems of the 2018 GMC Yukon 🔎.

I am filing a complaint about a serious safety issue with my vehicle. While I was driving on a highway with my spouse and children in the vehicle, the engine began downshifting, the check engine light came on, and an “engine oil hot” warning appeared. The engine then suddenly shut down. With traffic behind us, I had to pull off onto a dirt road in a rural, secluded area. This put my family in a frightening and dangerous situation. The vehicle had to be towed to a dealership. After inspecting it, the dealer told me it needs an engine replacement. This would be the second engine replacement for a vehicle that is less than four years old. I have owned this vehicle for only two and a half weeks and have already had to take it to the dealership twice for major repairs. It is unacceptable to make payments on a vehicle this new that has proven so unreliable, especially when it can shut down without warning while my family is traveling. I am requesting a prompt resolution to both the safety issue and the repeated engine failure.

My 2021 GMC Yukon has approximately 36,900 miles. On September 12, 2026, the vehicle was at an authorized GMC dealership and passed a state safety inspection. On September 19, 2026, the check-engine warning light illuminated and I returned to the dealership. The dealer performed diagnostic testing and told me the fuel pump pressure was approximately 400 psi when it should be approximately 700 psi. I was told the fuel pump needs to be replaced. The vehicle is currently at the dealership awaiting the replacement part: fuel pump I was not aware of a fuel-pump failure before the warning light appeared. I am particularly concerned because this failure occurred at only approximately 36,900 miles. Gm previously recalled 3,386 2021 GMC Yukons under NHTSA campaign 21v-739/gm recall n212332040 for a fuel-pump power-control-module defect that can cause the fuel pump to fail or operate intermittently, interrupt fuel flow and potentially cause the engine to stall. My 2021 Yukon is not included in that recall and currently shows no unrepaired recalls associated with my VIN. I believe this represents a potential safety concern because inadequate fuel delivery or a fuel-system failure while driving could cause reduced engine power or an unexpected stall, increasing the risk of a crash. Given the low mileage, the dealer-confirmed fuel-pressure problem, and the existing fuel-pump-related safety recall affecting other 2021 Yukons, I am concerned that my vehicle may have the same or a related defect despite not being included in the recalled population. I believe NHTSA should evaluate whether additional 2021 Yukons should be included in a safety investigation or recall. I am paying out of pocket to have the fuel pump replaced and am filing this complaint to document the failure. A fuel-pump failure at only 36,900 miles is extremely concerning. I ask NHTSA to determine whether my vehicle has the same or a related defect and whether the existing recall population should be expanded.

Part number 13554821 fuel pump control module has failed 2 times. April 2023 on interstate 95 near savannah GA in very busy traffic. Vehicle buckled and seized, just barely made it to the shoulder of the road. Same part failed again 9/18/26 while turning onto sunrise hwy in NY another very dangerous situation as we were stranded in the middle of a very busy intersection.

On September 17, 2026, at approximately 22,861 miles, the 6. 2l l87 v8 engine in my 2024 GMC Yukon xl suffered a sudden loss of propulsion and was subsequently confirmed by an authorized GMC dealer to be seized and require complete replacement. I was entering northbound I-75 from the mt. Paran road entrance in atlanta, GA with two of my children in the vehicle. This entrance has an extended acceleration ramp where vehicles accelerate to interstate merging speed. While accelerating, the engine briefly stuttered and then the vehicle stopped producing power when I pressed the accelerator. I was unable to continue accelerating and moved onto the limited shoulder. Other vehicles continued accelerating toward I-75 and passed immediately adjacent to us at significant speed. My children and I remained stranded there for approximately two hours waiting for a tow. The vehicle was towed to an authorized GMC dealer, which confirmed the engine is seized and requires complete replacement. The vehicle and failed engine are currently at the dealer and available for inspection. This vehicle was previously subject to NHTSA recall 25v-274 / gm n252494000 for l87 engine failure and loss of propulsion. An authorized GMC dealer completed the recall procedure on November 3, 2025. The engine was not replaced; it passed the prescribed inspection and received the higher-viscosity-oil remedy. Despite completion of the recall procedure, the engine subsequently experienced the loss-of-propulsion condition identified by the recall. I understand NHTSA has investigated l87 engine failures occurring after completion of this recall remedy, including rq26001 and ea26005. I am reporting this post-remedy failure because it may be relevant to that investigation.

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6. 2l engine has the oil change update, and engine failed recently. Took vehicle for repair to golling GMC dealer. Waiting on feedback.

According to the gm dealership the rod bearing failed disabling the engine. Dealer recommends replacing the entire engine. This consistent with recall n 252494000-n252494003 but my VIN is not included in the recall. Estimated repair $11,200. Our family was traveling roughly 55 mph on the interstate at the time of incident.

Vehicle passed previous recall for engine defect related to complete engine failure, gm switched oil viscosity. Recall performed 10-16-25. Complete engine failure diagnosed at dealer 9-4-26, related to exact malfunction that sparked recall.

My vehicle was with ancira GMC boerne for approximately three weeks where they replaced the transmission control system/module, the centralized onstar module, and diagnosed both rear screens for replacement. Approximately one month after getting it back, at only 49,800 miles, I experienced a complete loss of propulsion. The vehicle shut down while I was driving. Given the recent transmission repair and the fact that this failure occurred while the vehicle was in motion, I no longer have confidence in the safety or reliability of this vehicle. I have young children riding in this vehicle daily and I’m not comfortable accepting another repair and simply being told it’s safe to drive.

I think it is a transmission type of failure. I'm not sure of the exact mechanical specifics. While putting the vehicle in reverse, driving and or accelerating it feels like the transmission is locking up and then releasing, and then locking up again. It felt very dangerous for that to happen while driving down the road. I took the vehicle to a local mechanic that was near by for assistance and he said I should take it to a dealership because there was a recall due to that issue on my type of vehicle that he knew about. So I call a dealership to make an appointment, tell them I think the issue is due to a safety recall due to the transmission locking up. They check my VIN# and say there are no recalls for my vehicle, even though it falls in the same year, make, and model of affected gm vehicles , therefore they could not make a recall appointment for me. Even though I was experiencing the same type of issues on the same type of vehicle thats included in the recall. I did not have any warning lights before, or while driving. The day it happened, I drove the vehicle to work, parked, was at my office all day. Came out to go home and put the SUV in reverse and it like lunged forward, almost hitting the car parked in front of me. I thought I must have had it in the wrong gear or something. So I put it in park and then tried again. Then it felt like it locked up, rocked forward, and then allowed me to back up. I put it in drive and again it was like it was locking up and releasing very forcefully but then smoothed out and drove normal for a few miles and then locked up again. There were never any warning lights or messages during this time. I called gm to inquire why my vehicle isnt in the safety recall and all they could tell me was that they did not know. I was very afraid I was going to be involved in an accident due to this issue.

On August 22, 2026, I was driving my 2023 GMC Yukon denali with the 6. 2l v8 at highway speed when the vehicle began struggling to maintain power while climbing a hill. The engine then developed a noticeable knocking sound. Shortly afterward, the engine shut off completely while the vehicle was moving, causing a sudden loss of propulsion. I was able to bring the vehicle to a stop, but the engine would not restart. The electronic transmission also would not shift into neutral and displayed a message indicating that the conditions required to shift were not met. Because the vehicle could not be shifted out of park, the towing company had difficulty loading and unloading the vehicle. The failure occurred during normal highway driving and created a significant safety concern because the engine shut down without warning while the vehicle was in motion. I am aware of NHTSA recall 25v-274 / gm recall n252494000 involving certain gm vehicles equipped with the 6. 2l l87 engine, as well as NHTSA engineering analysis ea25-007 concerning engine failures and loss of propulsion. At the time of this complaint, the dealership has not yet confirmed the specific mechanical cause of my vehicle’s failure. The vehicle is being taken to an authorized GMC dealership for diagnosis. I am submitting this complaint because of the sudden engine failure and loss of propulsion while traveling on a highway.

Was driving the vehicle at 70 mph on the highway without any issues for several hours and suddenly the vehicle lost power and had no propulsion. It went into neutral automatically and the engine shut off while driving. Thankfully I was on a downward slope and could steer the vehicle off the very busy highway. Once safe, I tried to restart the car but the engine would not start or turn over. Roadside assistance came to help as well as a flatbed tow truck. It was taken to a nearby GMC dealer but it remains completely dead despite the battery being fully charged and all of the electronics working. No known error codes are showing up. It’s an l87 engine and was part of the gm recall. The recall work was completed in Nov 2025.

1. What component or system failed or malfunctioned. The fuel pump module failed unexpectedly while the vehicle was being driven. Failure caused the engine to stall, resulting in a complete loss of power and mobility. Unsure if part is available for inspection. 2021 GMC Yukon have a recall n252516900, but our VIN is not included in this. Can our VIN be added to this recall please? 2. How was your safety or the safety of others put at risk? the vehicle abruptly stalled while being driven through a parking lot, causing a complete loss of power and leaving the vehicle disabled in an active traffic area. Because the vehicle could not be shifted out of park, it became an obstruction, creating a hazard for other drivers navigating the parking lot and increasing the risk of a collision. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. After the vehicle was towed to a local mechanic on a flatbed truck, the dealer diagnosed and confirmed that the fuel pump module had failed, which caused the vehicle to stall and lose power. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? the vehicle was inspected by a local repair shot, which diagnosed the failed fuel pump module. The vehicle was also evaluated during the towing process. To my knowledge, the manufacturer, police, or insurance representatives have not separately inspected the vehicle or component. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? prior to the failure, there were no significant symptoms indicating an imminent fuel system failure. When the incident occurred, the vehicle abruptly stalled, lost all power, and displayed a message indicating that the vehicle was "not in a condition to shift," preventing it from being shifted out of park. This message first appeared immediately following event.

The check-engine light first appeared at approximately 42,000 miles. I dropped the vehicle off at the dealership on August 22 and picked it up on September 1. Within two miles of leaving the dealership, the check-engine light came right back on. The dealership initially diagnosed the problem as a lifter and wiring-harness failure. They later determined that the #7 oil-lifter solenoid had an internal short, and the wiring harness was replaced because of damage related to that short. What I still don’t have is an answer to the most important question: what actually caused the failure? based on everything I’ve read about the problems surrounding gm’s 6. 2l engines, I’m concerned this is only the beginning. These are extremely expensive vehicles—with monthly payments that can rival a mortgage—and owners shouldn’t have to wonder whether the engine is going to become an ongoing problem at 42,000 miles. Extending the warranty is helpful, but it doesn’t address the underlying issue or restore confidence in the vehicle. If these 6. 2l engines have a known systemic defect, gm should be required to provide a permanent solution—whether that means replacing the affected engines or offering owners a fair buyback. Consumers paid a premium price. They should be able to expect a premium vehicle that is dependable.

Vehicle loss of power on the interstate at a high rate of speed. Vehicle would not start and could not be put in neutral to safely remove from road.

See all problems of the 2025 GMC Yukon 🔎.

On August 20, 2026, while driving my 2024 GMC Yukon xl denali equipped with the 6. 2l v8 engine at approximately 70 mph on the interstate, the vehicle experienced a sudden and complete loss of motive power without adequate warning. The vehicle unexpectedly shifted into neutral and would no longer accelerate or maintain highway speed. This occurred in active interstate traffic and almost resulted in a serious accident as I attempted to maneuver the vehicle out of the flow of traffic. The engine would not restart, and the vehicle had to be towed to a GMC dealership. The GMC dealership subsequently diagnosed that the engine had locked up and determined that the engine requires complete replacement. This failure created an immediate and significant safety hazard for me, my family, and surrounding motorists. My vehicle is affected by the 6. 2l engine recall, and I am extremely concerned about the safety and reliability of the proposed replacement engine. I have become aware of reports from other owners alleging failures involving replacement engines as well, including similar sudden losses of propulsion. I am concerned that replacing the engine may not adequately address the underlying safety risk if replacement engines are experiencing similar failures. I am requesting that NHTSA investigate not only the original engine failure, but also whether replacement engines used as a remedy are adequately correcting the defect. A sudden engine lockup and complete loss of propulsion at interstate speeds presents a serious risk of collision, injury, or death.

I am filing a safety complaint regarding my 2021 GMC Yukon. While driving on the highway during a long-distance trip from [xxx] to [xxx], my vehicle suddenly experienced a serious loss of power, drivability issues, and loss of propulsion. The vehicle began shaking violently, slowing down unexpectedly, and struggling to maintain speed while in active highway traffic at highway speeds. At the time of the incident, the vehicle displayed a warning message indicating “conditions not correct for shift” at approximately 127,506 miles. Shortly after, the vehicle set diagnostic trouble code p0011, which relates to the engine and transmission system not performing as expected and indicates an issue with the variable valve timing (vvt) system affecting engine timing and performance. The vehicle also entered a reduced performance state, and I was advised through the vehicle’s warning system to reduce speed, avoid hard acceleration, and avoid heavy load conditions. Despite following these precautions, the vehicle continued to run poorly and became increasingly unsafe to operate in highway traffic. This created a serious and potentially life-threatening situation, as I was traveling in fast-moving traffic and the vehicle lost normal propulsion and stability. I had to carefully maneuver out of active traffic lanes to avoid a potential collision. The vehicle eventually required roadside assistance/towing due to its inability to operate normally. Diagnostic trouble codes and warning messages were present at the time of failure. After the incident, I checked my VIN through the NHTSA recall system and discovered that my vehicle has three unrepaired safety recalls. Of particular concern NHTSA recall number: 25v274 gm manufacturer recall number: n252494000 this recall involves certain gm vehicles equipped with the 6. 2l v8 l87 engine and describes a manufacturing defect in the connecting rod and/or crankshaft components that may result in engine damag information redacted pursuant to the freedom of information act (foia),.

Our lifters in cylinder 3 were replaced after failing at 40,000 miles. The exact same lifters broke again at 77,000 miles. Both events caused engine failure.

Due to gm’s afm system, cylinder 1 has failed. It is causing degraded driving conditions and it is destroying my exhaust catalyst converter. I have been quoted between $9-18k to get this repaired with the possibility of this issue returning if engine is replaced with the same 6. 2l unit. Company is aware of this issue and have instructed repair shops to skip any repair methods of underlying issue and simply replace entire engine.

See all problems of the 2015 GMC Yukon 🔎.

While traveling at highway speeds, my 2017 GMC Yukon sle suffered a sudden, catastrophic active fuel management (afm) valvetrain lifter and camshaft collapse. This caused an immediate and highly dangerous loss of vehicle propulsion in live moving traffic on I-95, creating an extreme physical safety hazard for my family. General motors has extensive, documented internal corporate knowledge of this severe design defect under technical service bulletin TSB #18-na-073.

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April 2026-yukon shut down on highway (needed apparent fuse replaced) may 2026- Yukon went in for new engine in for 68+. Between the two stays. July 2026- (7/7)- got vehicle back, had two dents on the front and a. Back dented fender. Towing was hired by gm, not us. -July (7/22) -vehicle shut down on me at a stop sign in an intersection. Was brought in and fixed a voltage sensor (220. 00+). Also discovered a blinker issue (per the dealership the leds are shorted, etc. Quotes 900. 00+ for the whole unit).

The engine tries to die when in park. While stopped at a red light, it died and stated conditions not met to shift. Had to hit park button then restart it. This has happened 4 times. With & without auto start feature on.

This vehicle has been towed into GMC service 3 times to date. #1. 2/2024 (mil 22,662) would not start, low voltage msg, replaced battery. #2. 4/2026 (mil 57,854) vehicle went into n on its own while I was driving down the road, msg on dash "function not available", I stopped and the engine died & would not restart, no engagement from starter motor, found p0615 present, found blown fuse on battery distribution fuse block, replaced. #3. 7/2026 (mil 63,041) vehicle went into n on its own while I was driving down interstate, msg on dash "function not available", I stopped, the engine died and would not restart, found main battery fuse blown, engine seized, found spun rod bearing full of metal debris, replaced engine, radiator, cooler lines, seals, gaskets, bolts, & fluids. My safety was at risk as I was driving down a highway and the interstate 2 of the times the vehicle put itself in n. The problem has been confirmed by the dealer. The vehicle has been inspected by the dealer's service dept. Prior to these incidents I did not notice any symptoms that would have alerted me of what was to come. **this report is referring to my latest incident which was engine seizure. Recalls have been performed, #1. 5/2025 "reprogrammed serial data module" & #2. 11/2025 "engine loss of propulsion recall", replaced oil with 0w-40 & "ecm software update recall", replaced ecm with sps.

On July 14, 2026, I experienced a serious fuel system failure with my 2023 GMC denali. That morning, I filled the vehicle with a little over 20 gallons of fuel at a gas station approximately two miles from my home. Later in the day, I made a short trip to my neighborhood swimming pool, roughly 1. 5 miles round trip, with no unusual noises or warnings from the vehicle. Approximately two hours after returning home, I entered the vehicle to run an errand. When I shifted into reverse and began backing out of my carport, I immediately heard a scraping noise on the concrete. I stopped the vehicle and inspected underneath. At that point, I discovered that the entire fuel tank had fallen out of the vehicle and was resting on the ground. I contacted roadside assistance, and the vehicle was towed to the dealership. The dealership informed me that the fuel tank support straps were missing, which allowed the tank to detach and fall. I personally searched along all the routes I had driven earlier that day and did not locate any straps or debris. The tank itself showed no impact damage, suggesting it dropped cleanly rather than being torn loose by road contact. Although the vehicle is relatively new, my bumper to bumper warranty expired in September 2025, and I was charged for the repair. I have included photos taken before and during the tow, as well as the dealership’s invoice. I am extremely concerned about the safety implications of this failure. If the tank had fallen while I was driving at interstate speeds (approximately 70 mph), it could have caused a catastrophic fire hazard, loss of vehicle control, or danger to other motorists. I do not know how long the vehicle had been operating without fuel tank straps, nor why there were no warnings or indications of a structural issue. I also question why the dealership did not treat this as a manufacturing or assembly defect, given that fuel tank straps should not detach under normal use. . . . Ran out of characters. . .

The engine in my 2022 GMC Yukon xl equipped with the 6. 2l l87 v8 experienced a sudden loss of power while traveling at interstate speed. The vehicle had previously received the gm l87 engine recall remedy. Despite the recall being completed, the engine failed, leaving me and my family in a dangerous situation. The vehicle is currently at a GMC dealership and is available for inspection upon request. The sudden loss of engine power on a busy interstate created an immediate safety hazard. Traffic was traveling at highway speeds, and the vehicle rapidly lost the ability to maintain speed, increasing the risk of being struck from behind or being involved in a serious collision. My family was in the vehicle at the time, making the incident especially concerning. The GMC dealership has confirmed that the engine failure is related to the l87 engine issue and advised that the repairs will be covered under the applicable warranty/recall-related coverage. Additionally, after the original recall service was performed, an expanded recall was added to my VIN, further indicating that the original remedy may not have fully addressed the underlying defect. The vehicle is currently being inspected by the authorized GMC dealership. Prior to the engine failure, there were no warning signs indicating an imminent catastrophic failure. The recall service had already been completed, leading me to believe the vehicle was safe to operate. The engine nevertheless failed after the recall remedy, raising concerns that the corrective action may not be sufficient to prevent future failures.

I am reporting a serious safety defect and unreasonable delay in addressing it under safety recall n252494000 (l87 engine – loss of propulsion). My GMC Yukon has an illuminated check engine light and is now also overheating. According to gm’s own customer service r, this can lead to knocking, unusual engine noises, hesitation, high rpms, abnormal shifting, reduced propulsion, and sudden loss of propulsion while driving, increasing the risk of a crash. I have contacted multiple dealerships for urgent repair: cappllino GMC keller Chevrolet joe basil all three have advised me that they do not have enough technicians to get my vehicle in for repair. Each has urged me to continue driving the vehicle despite the active check engine light and recall, and all have refused to provide a loaner vehicle. I have also contacted GMC corporate directly for intervention. Instead of providing a loaner or expediting repairs, they have only offered post-repair rental reimbursement (up to $44/day after a repair order is opened). This leaves me with no safe transportation option. I have been told I can “drop off” the vehicle, but I have no alternative way to get home or to work. GMC and its dealerships are putting my safety (and the safety of other road users) at serious risk by directing me to continue operating a recalled, overheating vehicle with an active check engine light while refusing to provide any loaner or timely repair. My vehicle has 34,700 miles and is nearing the end of its warranty coverage, which raises additional concerns about potential delay tactics. Please review: the l87 engine defect and related check engine/overheating issues in GMC Yukons. GMC’s handling of this recall, including widespread failure to provide loaners and instructions to customers to keep driving defective vehicles. I authorize the release of my contact information to GMC to assist with the investigation. Attachments I can provide: screenshots of communications with GMC.

Driving on highway at 80 mph and accelerator stopped working and car turned off. We had to coast off toll rd and hope for the best. No warning and happened with our whole family in the car. I had a recall notice from manufacturer but last time I tried contacting manufacturer/dealer they said no resolution was available to repair recall yet and that I couldn’t drop off my vehicle.