general problems of the 2019 GMC Yukon - part 1

We have had no issues with this vehicle at all. Then one day notice a ticking in the area of the valve covers. Sounded to be more on drivers side. Thought maybe just the oil was low which has never happened before. Oil level was fine. I always change oil on regular intervals and there were no check engine lights and engine continued to run fine with no loss of power or ticking changing. It was our only vehicle so we had to continue to drive that day. Wife was driving and said vehicle shuddered and started sounding funny and check engine light came on she was able to drive back home. Now ticking is worse with a clucking rattling sound now coming from oil pan. After some internet searching it very much sounds like issues many others are having with the 6. 2l gm engine.

The contact owns a 2019 Yukon denali. The contact stated that while making a right turn the vehicle stalled. The vehicle was not able to restart. The vehicle was towed to an independent mechanic where it was diagnosed that the lifter went out and caused shaving to go into the oil and then the engine seized up and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 123,000.

The contact owns a 2019 GMC Yukon. The contact stated while driving at an undisclosed speed, the vehicle loss automotive power while the accelerator pedal was depressed. No warning lights were illuminated. The vehicle was towed to a dealer where it was diagnosed that the lifters and cam shaft needed yo be replaced. The manufacturer was not notified of the failure. The failure mileage was approximately 134,127.

Complete engine failure. The dealership kept the engine. This happened at a low rate of speed but it would have been much worse if on the highway. Yes the engine was completely replaced. The check engine light came on and their was a loud ticking noise coming from the engine.

The contact owns a 2019 GMC Yukon xl. The contact stated that while driving approximately 50 - 55 mph, and slowing down to approximately 40 mph, the check engine warning light illuminated, and the engine started knocking. The contact noticed that the engine was one quart of oil low after an oil change and driving less than 2,058 miles. The vehicle was not taken to the dealer, but was not repaired. As a certified mechanic, after searching NHTSA. Gov, the contact became aware of NHTSA id numbers: ea25007 (engine, engine and engine cooling) and rq26001 (engine); related the failure to the campaigns. The manufacturer was not informed of the failure. The failure mileage was approximately 62,008.

2019 GMC youkon with 94,659 miles. I am the second owner of this vehicle. I purchased it used in February 2025. Check engine light came on in route to work on March 5, 2026. Immediately took vehicle to auto zone to scan for codes. Multiple codes were returned. I drove it directly to a repair shop for further diagnostics. Return results were massive lifter failure and cam shaft damage. Why would the check engine light not come on sooner to prevent total failure. Vehicle was towed to a GMC certified mechanic where it was confirmed that all lifters and cam shaft were damaged beyond repair and must all be replaced. Estimated cost of repairs so far: $8,596. 80 labor: remove & replace left and right valve lifter (both sides) coolant service oil change labor parts: engine camshaft 1 , genuine gm engine valve lifter oil manifold gasket 1 , genuine gm fuel pump gasket 1 engine timing cover gasket set 1 engine valve lifter guide 1 engine valve lifter guide 1 coolant/antifreeze orange dex-cool 1 gal 3 engine push rod 8 engine oil filter 1 0w-20 full syn 8 engine cylinder head bolt set 1 engine valve lifter guide 1 engine valve lifter guide 1 stock engine valve lifter 4 stock engine valve lifter 4 engine cylinder head gasket kit 1 engine cylinder head bolt 10 approved subtotal $8,422. 71 + est. Tax $174. 09 $8,596. 80 estimated time for repair: going on three weeks.

Check engine light came on. Went off a little later and then came back on. Took it to the dealership where they ran codes. They changed the fuel injector and spark plugs based on the codes listed. They heard a noise coming from under the engine and felt like it was the same failure that it happened in the 2021 to 2024 Yukon models those engines had been recalled. Was quoted $15,000 for a new engine was also charged $1000 for the fuel injector and spark plugs.

P0304 and p0306 misfiring and compression on both cylinders is 0. Both lifters have broke and collapsed. It started with a noise, once checked by the mechanic, we were told the lifter was going bad, before we could get it repaired it completely broke and that is when the check engine light came on and went off repeated times. At this time it is pouring out black smoke when driving and must have a complete engine replacement. The replacement work has been quoted for $10479. 57.

The contact owns a 2019 GMC Yukon xl. The contact stated that while driving approximately 30 mph, there was a misfire in the engine, with a ticking sound coming from the engine compartment. There was no warning light illuminated. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure, and a case was opened. The contact was referred by the manufacturer to the NHTSA hotline for assistance with having the VIN linked to NHTSA action number: pe25001 (engine and engine cooling). The approximate failure mileage was 104,389.

Camshaft/lifter broken and need replaced.

Engine lifter spring failure followed by bent valve push rod experienced on or about 11/6/2025. Engine repaired/re-built at independent auto mechanic for a total of $6,450. Parts not available but have pictures. Depending on where this incident could have occurred (freeway, long trips, while towing (boat, horses), etc. ) safety concerns include being stranded in traffic or remote areas. Engine lost significant power and wouldn't have been able to tow. Engine knock warning light.

Memorandum national highway traffic safety administration (NHTSA) subject: safety defect report – 2019 GMC Yukon denali 6. 2l v8 (l87) with afm/dfm I am reporting a serious and recurring safety defect involving my 2019 GMC Yukon denali equipped with the 6. 2l v8 l87 engine and gm’s afm/dfm system. In the past twelve months, I have experienced two separate engine failures, both occurring at highway speeds and both involving valve-train/vlom failures on the same side of the engine. In each incident, the vehicle suddenly lost power, misfired violently, and became unable to maintain speed. This created an extremely dangerous situation for my family. One failure occurred while my wife was driving; the other occurred while my [xxx] son was driving. Both were forced to maneuver across high-speed traffic with a failing engine to reach the shoulder. These events posed a clear risk of a high-speed crash, injury or even a fatality. There are hundreds—possibly thousands—of documented complaints from owners of gm vehicles with afm/dfm-equipped engines reporting the same issues: collapsed lifters, valve failures, vlom malfunctions, and sudden loss of propulsion. These failures often occur without warning and show a consistent pattern across multiple model years and engine variants, including the l87. The sudden loss of power at highway speeds represents a significant safety hazard. The frequency of similar reports suggests a systemic mechanical defect rather than isolated incidents. I respectfully request that NHTSA open a formal investigation into afm/dfm-related failures in gm’s l87 and related v8 engines, with a focus on lifter, valve, and vlom failures that lead to abrupt engine shutdown. Appropriate safety action, including a mandatory recall, should be done immediately to prevent potential injuries or fatalities. I will provide repair documentation, service reports, and other additional information. [xxx] , esq. [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b.

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.

Four of the eight oil lifters in my 6. 2l engine in my 2019 GMC Yukon failed. The car has around 53,000 miles. The issue was confirmed by an independent service center. There were no warning lamps or messages prior to the issue. Zero. The service center even ran diagnostics with no result and could not confirm the issue until after it partially took apart the engine. I noticed a noise similar to a card flapping in the wind and took it to the service center that same day. The car had been properly serviced with oil changes and still had 44% oil life that same day. Repairs are currently being made and estimated at $4,000.

I suddenly noticed a noise coming from the engine that sounded like a noisy lifter and stopped using the car after hearing it. The next day I called circle Chevrolet to check and verify if they could check the car and do any work required under the cpo warranty. They advised that they could since they were part of the gm family and could do any work required under the cpo warranty. I then arranged to have the car towed to circle Chevrolet to prevent any further damage, that was on oct 20, 2025. The cpo warranty was due to expire on oct 27, 2025 due to time, not mileage. The dealership advised that the vehicle would need to be examined by one of only 3 qualified mechanics in their shop who could do this evaluation and determination if the issue(s) were covered under the cpo warranty and it would be about 3 days before they could have one of their 3 qualified technicians check the car. The service adviser called me back on October 22nd, 2025, and advised that cylinder 5 had noisy lifters and that they would be changing out the engine with a newly rebuilt engine, all under the cpo warranty. The service adviser said it would take 3-5 days to get the replacement engine in and then about 2-3 days to replace the engine. However, less then 24 hours after getting my car back, the check engine light came on, which was not on when I had the car towed to the dealer. They said the catalytic converter needed to be replaced and said it would be ~$6000. They refused to cover the replacement even though the catalytic converter was damaged due to a combination of the engine problem/defect and the testing and installation work performed by the dealer. I reached out to the dealer and GMC and they refused to address the issue and would not provide an itemized estimate to replace the catalytic converter and refused to return my phone calls I made to both the service adviser and service manager. The GMC representative I spoke to refused to address the issue as well.

Engine began knocking noise at around 150k miles, noise became faster with throttle speed. Brought in to repair shop, mechanic confirmed connecting rod failure, suggested replacing engine. Replaced engine as suggested.

The contact owns a 2019 GMC Yukon xl. The contact stated that while driving approximately 68 mph, the vehicle vibrated abnormally, with a knocking sound coming from the engine compartment, with the check engine warning light was illuminated. The vehicle was taken to a certified mechanic, who diagnosed the vehicle and determined that lifter #7 had failed and needed to be replaced. The contact stated that all the lifters were replaced. The contact stated that approximately 5 days later, on October 2, 2025, while reversing, there was a burning odor with black smoke coming from the exhaust pipe. The vehicle was towed to the mechanic and was diagnosed with coolant intrusion into the engine. The contact was informed that the engine needed to be replaced; however, the warranty only provided the replacement of 2 head gaskets. After 7 days of having the vehicle, while driving approximately 68 mph, the vehicle started shaking with the check engine warning light illuminated. The vehicle was also idling roughly. The vehicle was towed to the mechanic and was diagnosed with fuel pump failure. The fuel pump was replaced; however, the vehicle was idling roughly, and there was an intermittent misfire in cylinders #1 and #6. The dealer was unable to identify which cylinders needed to be replaced. The contact discovered information of NHTSA campaign number: 25v274000 (engine and engine cooling); however, the VIN was not available. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 127,000.

The contact owns a 2019 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle briefly hesitated and jerked before returning to normal functionality. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was 111,000.

The v8 engine on our family's 2019 GMC Yukon denali xl check engine light came on and began ticking while taking our daughter to college in montana. The dealer informs us the engine has probable lifter failure and will need to be disassembled to diagnose additional issues. The estimated repair costs are from $3,000 to $10,000+, may require a new engine, and we will be without the vehicle for almost two months. We are incurring additional costs such as lodging, airfare to fly home, costs for an additional car, and storage for a travel trailer that must remain behind. The warranty on our vehcle expired last year. The vehicle has been consistantly serviced at our local dealer. Research and discussions with other gm customers inform us this is a known issue for our year and that a recall was issued for vehicles for 2021 to 2025.

My name is [xxx] I have a 2019 GMC Yukon denali with 226,000 miles my engine has went out do to the same issues that's going on with the gm motors right now. I have brought it in to courtsey GMC and they told me my engine needed to be replace do to oil pressure problem cylinder 8 was bad. After taking the engine apart they notice the problem. My phone number [xxx] email [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Engine knock, possible piston rods bent. Oil in cylinder. Cylinder has not enough compression. No safety issues, was able to drive to mechanic without harming myself or others. This is the second vehicle in my family to have lifter or rods issues leading to major engine work. Check engine light came on after the vehicle began to misfire.

I was driving on rt80 in NJ and my 2019 GMC Yukon lost power. I took it to my local chevy dealer. The scan code was p0300 engine misfire. They removed right side valve cover and found no bent pushrods. Inspected camshaft and found damage from failed lifter. I had to get a new engine and pay out of pocket $14,435. 44.

Engine failure at 114k miles required replacement.

The engine had catastrophic failure mccluskey Chevrolet kings auto mall said it needs an engine replacement that has a blown engine. There is currently a recall on this particular 6. 2 l87 engine from 2019 to 2024 but my vehicle for some reason isn't included but it's got the same problems as all the other ones.

The contact owns a 2019 GMC Yukon xl. The contact stated that while attempting to start the vehicle, there were abnormal sounds coming from the engine. The contact stated that the check engine warning light illuminated and started flashing. A dealer was contacted. The vehicle was towed to a dealer where it was diagnosed and determined that part in the engine had failed, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure via email. The failure mileage was 64,747.

Driving down the interstate and engine gave out, started shaking, and started losing speed. No warning, in the middle of the night with two young kids in the car. Sat on the side of the highway in the pitch dark. 2 days later truck was towed but the GMC had no one to look at it. Had it towed again and that GMC dealership said it was the engine and they see it all the time with that year/make/model. $16,000 for new engine. Contacted GMC and they stated that year is not included in the recall. Research this issue on google and most owners of the same year/make/model have the same issue with no help to solve the problem.

The contact owns a 2019 GMC Yukon xl. The contact stated while driving 60 mph, there were abnormal loud sounds coming from the engine. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with crankshaft or lifters failure. The contact related the failure to NHTSA action number: pe25001 (engine, engine and engine cooling). The dealer was contacted and provided an estimate for the repair because the VIN was not under recall. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 106,000.

Reporting engine failure with my 2019 GMC Yukon xl. Reporting engine failure after 106,500 miles. Yukon was properly functioning and well cared for with frequent oil changes and tire rotations. On [xxx] I was driving home with my [xxx] daughter coming back from her dance recital on [xxx] at [xxx] in minnetonka, mn when the "forward collison system unavailable" warning notification came present on my dash. The vehicle started to sputter and an abundance of smoke was coming out of the rear exhaust. Fortunately, I was able to make it home safely. I brought the car in the following day and it was diagnosed that the engine failed and complete repair of camshaft, cylinders, engine coolant lines and oil pans would need replacement. I did notice that the vehicle years 2021 to 2024 are currently under recall for similar issues. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Engine lights and all other warning lights came on, and lost total power in engine while driving. Engine knocked bad and had to limp to a repair center to check out engine problem. Service department says total engine failure at 72k miles, no warning. Apparently this 2019 GMC Yukon is not within the recall for engine replacement that appears it needs to be covered as well.

Driving home from work, with no signs my oil pressure guage dropped to zero and rpms went to zero and I had to pull over in full on traffic going 70mph with my boat hooked to my 2019 GMC Yukon denal almost causing me to wreck. Towed vehicle and boat to closest towing service and then took vehicle to mechanic and the engine was seized up.

The contact owns a 2019 GMC Yukon. The contact stated while driving at an undisclosed speed, there was an abnormal rattling sound coming from the engine compartment, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the cam shaft. The vehicle was repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was 170,000. The VIN was not available.

Diagnosed as in catastrophic engine failure.

Vehicle began idling rough then check engine came on. Acceleration would then vary while driving. Took to gm dealership and they said lifters, head gaskets and cam shaft are bad. The charge to repair is $7,736. Saw gm just did a “voluntary “ recall for this same issue on year models starting 2021-2024. 2019 year should be added as this is a costly repair.

Catastrophic engine failure to the gm 6. 2l engine. Mechanical issue - cam or crankshaft came apart. Safety to myself and/or others as I was driving on the road in traffic when the issue occurred and had complete loss of power. I was able to avoid traffic and get the SUV to the shoulder of the road. The issue was confirmed by my auto service provider. No warning lamps or messages prior to failure. Once failure occurred, the check engine light started to blink.

Was driving home at highway speeds and my 2019 Yukon denalis engine just shut off in traffic and had to come to a stop in the middle of traffic and it wouldn't restart, had to have it towed to dealer and they told me the engine was siezed.