Table 1 shows one common engine and engine cooling related problems of the 2018 GMC Yukon.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
We have a 2018 Yukon with a 6. 2. It has 70,000 miles on it. We have taken very good care of it and changed the mobil oil less than 5,000 mile intervals. The engine is making a terrible knocking noise. We stopped driving it the minute it started. We put it on a trailer and pulled it home and it has not been started since then. We had no warning lamps or messages to alert us of an issue. We have not had it to a dealership yet to have it inspected as we are pretty sure it is the same issue that other 6. 2 engine vehicles are having. This vehicle has been well maintained. We are hoping that this year/make/model will be included in the recall for a new engine as that is what ours will be needing. It is very disheartening that you spend that much money on a brand-new vehicle, and it does not have very many miles on it and the engine fails.
Air conditioner condenser faulty and had to repaired. Premium ride shocks faulty and had to be repaired. Lifters and bent pushrod faulty and had to be repaired. Vehicle currently has approximately 70,000 miles. These are all known issues by gm and very expensive to fix and no recalls.
Took the car to the dealer after getting alert from my GMC app saying it needed emission serviced, engine light came on, antilock brakes needing serviced. The dealership said that the engine is blown at just over 71200 miles. This car has only had service done at the dealership except for a tire change.
I was driving on i75 north, just north of chattanooga. I was in the center lane. I lost all power to the vehicle. The engine stopped. I had no power steering, no power brakes, and was in heavy traffic. I managed to shift lanes and get it to the shoulder of the road. The vehicle was towed in. Diaganostics were completed by a certified mechanic. The engine had seized. Gm has several recalls on this issue. 2018 is not included. However, this is the exact same issue that is happening with 2019 and up. That were recalled. I urge you to order an extended recall to include 2018 vehicles as well before someone gets killed.
The contact owns a 2018 GMC Yukon. The contact stated after the vehicle was serviced, while driving 30 mph and depressing accelerator pedal, the vehicle failed to respond. The contact stated that the vehicle hesitated, and the contact shifted to a lower gear to drive to the residence safely. A dealer was contacted. The vehicle was towed to the dealer where it was diagnosed and determined that the transmission needed to be replaced, and that the engine block was damaged. The transmission and engine block were replaced, and the vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 104,000.
My 2018 GMC Yukon blew an engine with only 81,000 miles. Had four shops including (2 gm dealerships) look at the vehicle, pictures, and findings and concluded the engine had blown. The vehicle had began running very rough while driving down the road at 45mph. The cel showed a misfire in cylinder one. The spark plug was pulled and soaked in oil. A borescope was put down the hole and found oil pooled on top of the piston. The engine has blow by the piston rings and the cylinder wall was scorn. Four shops. Four results. New engine needed. A quick google search of the engine (l83) showed multiple open class action lawsuits for this exact situation. The cause of the problem is the active fuel management system that gm created. When I contacted gm for assistance at the recommendation of the dealerships (which they have seen an increase in these engine blowing with low miles) I was informed by gm/GMC that they would look into it and could not guarantee assistance. Fast forward a couple of days I was contacted and made perfectly aware that I was 991 days outside and 21,000 miles out of warranty but they would offer “assistance” in the amount of 10% of the total cost. Four shops, four quotes for an engine replacement ranging from $14,750-$17,000 and gm was only offering $1,475-$1,700. Absolutely terrible. With multiple open class action lawsuits, stop sales, and well documented issues. I expressed disappointment and requested assistance to prevent having to seek litigation. I was told “if that’s what you want to do, you will need to talk to our legal department” and told there’s nothing they can do. Will not buy nor recommend anyone buy a gm product. They don’t respect or care for their customers.
1. What component or system failed or malfunctioned, and is it available for inspection upon request? the engine (6. 2l l87 v8) failed completely. The engine experienced knocking and rattling noises prior to the failure and then stopped functioning altogether while driving. The engine was replaced by village auto in bellmore, and the failed engine is no longer available for inspection, as it was removed and replaced during the repair process. 2. How was your safety or the safety of others put at risk? the engine failure occurred while the vehicle was in motion, creating a dangerous situation where the vehicle suddenly started shaking and could not be driven. This posed a serious safety risk to me, my passengers, and other drivers on the road due to the loss of engine power, steering, and acceleration control in traffic conditions. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. The issue was confirmed by an independent service center, village auto in bellmore, which diagnosed the engine as irreparably damaged and requiring a full replacement. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? the vehicle was not inspected by general motors, police, or insurance representatives. Insurance would not cover this issue and general motors failed to take responsibility for a fault in the engine. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no - all happened at once - engine light and complete failure.
Driving the vehicle on a regular city street when the flashing engine light came on out of nowhere. Immediately pulled off and had the vehicle towed to my dealership. Result of the inspection, I have to replace my engine. As soon as I started researching the issue it is clear that this truck should be part of the gm recall. It is a known issue that gm slow played for years, but as of now this vehicle is not part of the recall. It is the same engine and failure mode as the 600,000 unit recall, but mine isn't covered by the recall leaving me responsible for their known and documented manufacturing issues.
Has lifter chattering / camshaft issues as a result of manufacture defect that so many people are complaining about from the research I have done.
Afm lifter failure and cam shaft failure.
What component or system failed or malfunctioned, and is it available for inspection upon request? engine failure due to lifter failure and bent push rod and needed cam replaced. It is available for inspection. How was your safety or the safety of others put at risk? could have been catastrophic if I didn't bring in for repair if the engine failed completely while driving. Has the problem been reproduced or confirmed by a dealer or independent service center? yes has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? yes, may 10th.
While stopped and isling, the engine shut off and would not restart. Had I been moving, steering, braking, etc would have been compromised. Repair facility identified catastrophic engine failure at 48k miles on the vehicle.
Abrupt engine failure associate with connecting rod - very similar to current t recall on 2021-2024 Yukons.
Vehicle (engine) shut off while driving on highway. Would not restart. Had vehicle towed from highway to repair shop. No check engine light ever came on. The engine was replaced and old one had to be returned in order to avoid paying a $5,000 core charge. I found out after replacing the engine that gm issued a recall but I read it starts with 2019 models and only reimbursement for original owners. I purchased this vehicle from a gm dealership in CT (scranton of vernon) in 2022 with approx 52,000 miles.
The contact owns a 2018 GMC Yukon xl. The contact stated while driving at an undisclosed speed, the vehicle stalled with no warning light illuminated. The vehicle was able to restart. The vehicle was taken to an independent mechanic where it was diagnosed with engine failure and the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was towed to the dealer where the same diagnostic result was provided to the contact. The contact was informed that the engine needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.
For about a week my engine seemed to be bogging down. I thought maybe it was bad gas purchased that week . I was traveling on interstate 75 in ky a day later as I do everyday . My state speed limit is 70 mph, suddenly my car was bucking and felt like the engine was going to stall and speed immediately went from 70mph to 20 and a huge plume of white smoke came out of the tailpipe and check engine light came on . I was terrified I could have been killed or killed somebody else. I was able to get the car to my mechanic who diagnosed it as cylinder 4 complete fail this vehichle has afm ( active fuel management ) lifters get stuck , loss of power and engine failure. It cost me 11k for a new engine. And car rental for 1k . After doing research, I was able to find that some vehicles from 2014 to 21 including mine Cadillac GMC Chevrolet among many other vehicles with afm active fuel management had issues gm knew about this failure and that they engines were defective during production and sold the vehicles anyways upon further investigation because gm was aware of this they were offering to replace the vehicle if it was under warranty or the engine several states atlanta in California have lemon laws for this. Unfortunately my state does not when I call gm to request a refund since they were aware that the engines should not have been sold while they were defective. They told me because I took it to my mechanic it was out of their hands. There was nothing they can do. . This is not acceptable. They have put consumers lives at risk knowing these engines were defective and decided to sell them anyways I want to know why there was not a lemon law at the beginning and how do I go about getting my money back for the cost of this engine. .
My car was taken in for service in early January 2025 after just being serviced in November. The engine was making a ticking noise. The check engine light was not on, and appeared to be running fine otherwise so we drove it in for service. We were told upon inspection that the cam and lifters needed replacement, but we pushed for further inspection which found the car needs an entirely new engine, at the advice of multiple inspectors and the service department of two dealerships. Initially, the extended warranty company told us they would replace the entire engine instead of just the cam and lifters. Then they came back and said since we drove it in for repair rather than having it towed, they would not cover it. At the advice of multiple parties, it has been found this engine has so much metal in it, they've never seen anything this bad before. It is impossible it was due to driving it the 5 miles to be serviced. We have requested pictures and documentation about their findings and they are refusing to provide us with them. We have filed a dispute with the insurance company and they are not helping us.
Engine work valve intake lifter and camshaft repairs / oil sensor has been going haywire / rear struts keep popping off and after struts repaired bought the truck 05/2024 and had to take to repair 12/2024 and once month ever since.
2018 Yukon safety of family put at risk over faulty transmission. Vehicle used to transport children many times daily. Transmission began slipping with slight lagging. Vehicle assessed by independent service center and we as customers told this is a common issue with GMC vehicles of this year. Service center was able to reproduce and confirm the issue. Total to rebuild entire transmission was $7,377. 33. Total transmission failure. Entire transmission had to be replaced at tremendous expense to our family. Transmission began slipping with slight lagging. Engine rpm's would increase with no additional power or speed.
Without any warning while driving on the interstate the vehicle became disabled and released smoke. After being towed to dealership for diagnostics we were informed of engine failure. No warning on that day at time of the very dangerous event or prior warning of any engine related issue. All maintenance and service records are on file with GMC dealership. We requested our service advisor with ewing Buick GMC to contact gm regarding this matter. We were told they reached out but that gm offered no assistance. After some research it does appear there are several issue reported concerning no warning engine failure with the GMC Yukon. This was a significant safety risk since the vehicle displayed no warning signs of any engine problem. It goes without saying the financial impact related to the very unexpected engine failure in a 2018 vehicle. Thanks in advance for your review and consideration regarding this safety matter.
As we were driving, without warning, the engine started to rumble and clank. We had to pull off the road in a neighborhood and have it towed to the dealership. Thankfully, we were driving on side/neighborhood roads at the time. If this would have happened on the highway it could have been very dangerous. They'll dealership said it was unsolvable and we needed to purchase an entirely new engine.
Possible cam shaft or lifter failure. The engines power greatly reduced speed and sputtered which significantly slowed the vehicle down and could have caused and accident. It has been inspected by a certified GMC service shop. There was a check engine light on and it was supposed to be all fuel injectors, that didn't solve the problem the shop kept on digging and digging and said that they don't know if it is the cam or lifter. It is my understanding that this is a very common issue amongst these vehicles and puts alot of people upside down and out of a vehicle due to this issues. The service shop said that a new engine would cost up to $20k and it could take 4 weeks to 4 months to get the new engine in. They are back ordered because so many people are going through this issue. The service shop also said that they didn't know exactly when the engine would come in.
2018 Yukon denali engine failed June 2024 due to the lifter being bent. The dealership richey Cadillac in daytona beach estimated the repairs at $18,862 and were going to have my vehicle for months. I took it to my mechanic who rebuilt the engine for $7181 in 30 days. My safety was placed at risk because while driving I had to pull over since I had no control with the engine failure. There were no messages prior to the failure.
After stopping and then go, like at a light or stop sign, on acceleration SUV will go slightly forward and stalls and high rev for a second and car feels like it’s dying or losing power and starts back up. I feel unsafe and that the car might stop middle of intersection from stop-and-go. Sometimes while driving I lose power driving and stepping on gas pedal has a few second lag time to pick back up. I’ve never had this issue before or any of my vehicles and I bought it new and we are original owners.
I own a 2018 GMC Yukon denali that keeps burning oil. I was told that the light had to be on or the issue had to be duplicated. I did an oil change and 2000 miles later the oil light came on. I was out of town so took picture of dipstick which was bone dry. The dealership GMC of brandywine had my SUV. I am highly upset because in other states the started a lawsuit bit nothing in MD. If gm knows this is an issue then why aren't they doing something. My SUV has been down since October 16 and no eta for the part. No loaner or rental help from gm as well.
The contact owns a 2018 GMC Yukon xl. The contact stated while driving 50 mph, the check engine warning light was flashing. Additionally, there was an abnormally loud sound coming from underneath the hood, and the hood was shaking. The contact was able to drive to the residence. The vehicle was towed to village auto, where it was diagnosed and determined that the engine had failed and needed to be replaced. The vehicle was repaired. Village auto contacted an unknown dealer. The contact later became aware of NHTSA action number: pe25001 (engine, engine and engine cooling), which the contact related to the failure. The manufacturer was notified of the failure and informed the contact that the repair could not be covered because the VIN was not included in a recall and due to the mileage on the vehicle. The failure mileage was approximately 60,000.
I heard tapping coming from the engine while it was running. Once I took it to a shop it was determined that the lifters and the camshaft was damaged and needed to be replaced.
The engine started making a ticking sound a few days after thanksgiving. I made an appointment with the dealership but they couldn’t take it in for 3 weeks. The day before my appointment I was driving on the highway and the lifter broke which caused the camshaft and a few other parts to break causing sudden lose of power and severe shaking. The parts for the repair were back ordered and it took about 5 weeks to get my vehicle back. About 7 weeks later I started the car in the driveway and it again had lose of power and severe shaking. The parts that were replaced in January failed and ruined the whole engine. There is a 6 month back order on this engine. It has been sitting at the dealership for almost 2 months already. Both incidents I believe had the potential to cause an accident if I were driving with cars close behind me.
Engine valve lifter for cylinder 3 had failed and camshaft lobes damaged. Error codes of p0300 and p0303. Vehicle had 67,049 miles when I brought it in to be repaired at park GMC in greenville, SC on 12/28/2022. GMC has the lifters (they replaced all 8) and the camshaft. Failure happened while on i40 in the smokey mountains at night while driving back from dollywood with my family. Engine produced a gassey sputtering sound and I lost some power but only noticeable under acceleration. Had another lifter failed due to the worn camshaft lobes, we could have easily been rear ended. A year prior to the failure (September 2021), I had taken the vehicle to a wakefield Buick GMC and parks Buick GMC to be inspected due to a shake at idle. Both dealerships said there were no codes and they didn't know what was wrong but they could feel the shake/vibration intermittently at idle. In November of 2022, I got the p0303 error code and took this vehicle to a private mechanic (since dealerships previously said nothing was wrong) who diagnosed an issue with the fuel injector for cylinder 3. I had mechanic replace all 8 injectors and he cleared the code. About 150 miles later (while on i40), the code came back. I took this vehicle back to the private mechanic and after several weeks with my vehicle, he refunded me the labor and said it was probably an issue with the lifter but he didn't have time to take apart the engine. I then took this vehicle to parks GMC in greenville, SC where they diagnosed a lifter and camshaft failure. Lifters and camshafts should not be failing in vehicles with under 100k miles.
2018 Yukon denali with 37,000 miles has developed a leak in the radiator and needs replaced.
The torque converter is too small for the vehicles transmission which then caused it to break and put metal into the transmission fluid. Which cause the transmission to break. My safety was at risk was because while on highway it shot high on rpms and then made funny noise and wouldn’t go. The problem was confirmed at aamco transmission where I have to get the transmission rebuilt. There was never a check engine light or check fluid or any codes thrown before the problem.
May 31st 2022-while driving on the highway, I lost control of my power steering. Luckily my husband was with me to drive it back home. June 1st 2022-took it to a service center and was told it needed a part to fix the problem. We ordered the part, which would not be delivered until may 6th 2022. June 4th 2022- went to drive, made it a couple blocks down the road when the abs, electronic stability control, & the engine light came on. So I turned around to take it back home, only now my power steering was completely out, my car would not shift out of first gear. After arriving home, I attempted to put it in park but was unable to. My motor shut off but would not allow me to place it in park or turn the electric power off. The only option I had was to disconnect the battery. I let it sit for a few hours, reconnected the battery, now my car will not start at all. I am now unable to take my car to the dealership due to power failure note: June 2nd & 3rd, my vehicle was not driven I did contact my local dealer to check if there were any open recalls, was told no.
Nhtsa's recall number 25v-274. This vehicle should fall under this recall it happed to the this motor at 58k miles and I had to put a whole motor in it at 58k miles in 2022. The Yukon denali has the l87 v8. I bought the new motor threw gm so it should be tied to this VIN number.
2014-2018 chevy and GMC's have a problem with cycling of the thermostat that causes stress fractures on the radiator leading to coolant leaks. Attached are gm bulletins on the 2014 and 2015 models. As one can see they have provided special coverage on the 2014 models to 5 years or 100000 miles for this problem. (bulletin 15829) this is not true of the 2015 through 2018 like mine. Although they use similar verbiage in the bulletin p11513a and p11513f. It should be noted that bulletin p11513a and f also applies to 2015 Cadillac escalade models, 2015 Chevrolet suburban, tahoe, 2015 GMC sierra denali, Yukon models, Yukon denali models equipped with 4. 3l, 5. 3l or 6. 2l engine (rpos lv1, lv3, l83 or l86). ***basically this is a safety hazard because when traveling highway speeds it puts car into reduced power mode and you can only drive very slow on highway or be stranded on side which is just as dangerous ***.
Car is not performing as it should.