The contact owns a 2021 GMC Yukon. The contact stated while driving at an undisclosed speed, there was an unusual rumbling sound coming from the engine. In addition, the contact noticed that whenever the accelerator pedal was depressed, the vehicle failed to accelerate as intended. The contact stated that the failure had been ongoing for approximately one year or more. In addition, the contact stated that the failure was persistent and had occurred approximately ten times. There were no warning lights illuminated. The vehicle was not taken to the dealer nor an independent mechanic. The contact later received notification: the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, parts for the recall repair were not yet available. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000.
2021 GMC Yukon engine complaints
Page 5 of 9: complaints 101 to 130 of 221, newest first, as owners wrote them.
GMC has not responded for the recall of the engine. My vehicle is running bad. I need the vehicle to be service as soon as possible. My saftey depends on GMC keeping there promise to repair the recall engine.
I looked up recall information on site and found my car has a recall for engine problems. My GMC app says there are no recalls related to my vehicle and I have never received a communication from GMC stating a recall has occurred.
My 2021 GMC Yukon Denali is affected by the federal safety agency Recall #25V‑274. The recall notice states that defects in the engine’s connecting rod and/or crankshaft can cause engine damage and failure, resulting in sudden loss of propulsion and increasing crash risk. The recall status for my vehicle is currently listed as “Incomplete – Remedy Not Available.” My dealership confirmed that no repair is available and further told me that GMC will not authorize a buyback, trade-in, or loaner vehicle until a remedy is developed. This has left me with an unsafe vehicle that cannot be repaired, yet I am still obligated to make monthly payments. This defect creates a serious crash risk because the engine may fail and the vehicle could lose all propulsion without warning. My family is forced to either risk driving a defective vehicle or go without reliable transportation. Dealer Interaction •Dealer confirmed that the recall is active but has no available remedy. •Dealer stated GMC will not authorize a buyback, trade-in, or loaner vehicle until the recall repair is developed. •I am effectively stranded with an unsafe vehicle and no safe options. Remedy I am requesting that GMC be required to: 1.Buy back my vehicle under federal recall and warranty obligations; or 2.Provide a safe, comparable loaner or replacement vehicle at no cost until the defect is remedied. If a loaner is provided, I will continue making my monthly payments on my Yukon Denali.
The contact owns a 2021 GMC Yukon. The contact stated that while the vehicle was started and running, there was a hollow clunking sound coming from the engine compartment. The vehicle was taken to a dealer and was diagnosed with crankshaft bearing failure. The contact was informed that the crankshaft bearings needed to be replaced. The vehicle was not repaired. The contact believed that the failure was associated with an unknown recall. The manufacturer was notified of the failure. The failure mileage was approximately 82,000.
While driving on the and merging onto the highway, the check engine light and other alerts came on our 2021 GMC Yukon. There was a fluttering noise coming from the engine and the vehicle started to have decreased acceleration. We had to immediately exit the highway and park the vehicle. We then had to take our vehicle to our regular mechanic since GMC dealership was backed up and we needed the vehicle repaired. Our mechanic has identified the issue to be with the engine. The lifters in the engine broke which also damaged the cam shaft. This is a very costly repair. Our vehicle is four years old and out of warranty since we have 80k miles on our four year old Yukon. This problem with the GMC L84 5.3L V8 engines seems to be a common issue and other owners have posted their frustrations on various websites and there is currently no recall on this 5.3L engine. This is a safety issue and a recall should be issued like the one for the 6.2L engine. Why is there no recall for the 5.3L engine? A recall needs to be issued for the GMC L84 5.3L V8.
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 !!
The contact owns a 2021 GMC Yukon. The contact stated that while driving at various speeds, there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. Prior to the failure, the contact had received a postcard about a potential engine failure linked to the vehicle; however, the contact disregarded the notice. Due to the failure, the contact had the vehicle towed to the dealer. The dealer performed a diagnostic test and discovered metal shavings at the bottom of the engine oil pan. The dealer diagnosed the vehicle with engine failure. Upon investigation, the contact discovered the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling) and linked the failure to the recall. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The contact was then referred to the federal safety agency Hotline to report the failure. The vehicle remained in the possession of the dealer because parts to repair the vehicle were on backorder. The vehicle was not repaired. The failure mileage was approximately 93,000.
In January 2021, I purchased a new 2021 GMC Yukon Denali from a GMC dealership, which currently has only about 27,000 miles. To date, several recalls have been assigned and completed for my vehicle. per the websites for GMC and your agency. However, based on published recalls for my vehicle and a repair that is currently underway, I have reason to believe that my vehicle should have been subject to three prior recalls for which it was not [the federal safety agency ID Numbers: 20V735000 (Front Seat Bolts), 25V274000 (V8 Engine Failure, and 21V739000 (Fuel Power Control Module] Currently, the fuel pump control module is being replaced at a local GMC dealership because it failed last week and left my stranded at home. GMC issued a recall for this in 2021, but my vehicle was not included. Aside from risk and inconvenience, this is also costing my over $300 for a rental. Secondly, though my vehicle's make/model/year is cited in GMC's ongoing engine failure recall, which you are investigating, I have not received a recall notice. I note GMC's financial interest in minimizing vehicle's it recalls for such a costly repair. I have inquired with GMC and two of its dealers and have only received reiterations that my vehicle has not been subject to GMC's recall, which I already knew. I have not been given any explanation for why my Yukon has not been recalled despite my inquiries. Lastly, GMC issued a 2021 recall for front seat bolts; however, I did not receive a notice for my Yukon. I have occasionally felt slight movement in the driver's seat since buying the vehicle. Based on reason and facts, I am alleging that GMC appears to be artificially minimizing recalls and notifications for vehicles that are in fact impacted by defects in their vehicles.
My vehicle is currently in repair due to a known issue with GM. GM has put out a Technical Service Bulletin 20-NA-038 referencing a "well-known" problem with Cylinder 5 failing in 2021 5.3L and 6.0L engines. However, there has not been a recall. Ironically, there were other vehicles brought to the dealership (Sam Boswell GMC in Enterprise, AL) for the same repair on the same day as my vehicle. I'm hoping to get an initiative started for a recall
We experienced catastrophic engine failure consistent with the current outstanding recall. A GM dealership replaced the parts that failed (crankshaft and connecting rods) however, based on the recall that was issued, the serial number on our engine would qualify under the remedies indicated by GM for a complete engine replacement, however, our VIN number is not currently included in the recall even though our year, make and model for the car and engine are consistent with other recalled vehicles. The GM dealer indicated that the catastrophic engine failure was not due to any lack or neglected maintenance and felt that our vehicle should be included in the recall. My wife and two toddler children primarily use this vehicle and I have serious concerns about their safety and would like to feel confident about their use of the vehicle.
The contact owns a 2021 GMC Yukon. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling). The contact called the local dealer, who was unable to assist due to the parts not being available. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The contact had not experienced a failure.
Problems with the engine shifting gears stalling delayed or won’t engage hard shifting while it’s in motion something’s going on with the engine we’ve called several and had it serviced times of times to ask them what was going on with it in Newport Oregon you can fill it still when you drive. The problem still is not fixed. It’s been happening since we purchased it took it in right away. we’ve asked if our Vin number has come up for a recall repairs we are worried for safety and are currently parking in the car because the dealership is unable to fix what is wrong with the car. They’re telling us there is something wrong and are aware of the recall and won’t fix the problem dealership refuses to take the car they don’t want it without the recall fixed due to safety concerns. you can definitely fill it when you drive I’m not exactly sure what the other issue if with the sounds it’s making when the issue keeps happening but it’s scary There is the recall on it. They are not taking into consideration or the seriousness of the situation and the safety of lives.
My engine is currently experiencing loud knocking/shaking. It worsens as my vehicle is accelerating it is causing my engine to lose ability to accelerate which has posed a safety concern. This vehicle is my main source of transportation for my family. We have taken this vehicle to the dealership where they were unable to service due to the recall not being open and available and i have contacted GM customer service with no remedy to be issued at this time. The dealership cannot perform any maintenance pertained to the recall and yet cannot remedy. I am concerned for my family's safety. I was advised that i shall continue to drive the vehicle until it breaks down or the recall is open for repairs.
The contact owns a 2021 GMC Yukon. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted and confirmed that parts for the recall repair were not yet available. The manufacturer was not made aware of the issue. The contact had not experienced a failure.
The contact owns a 2021 GMC Yukon. The contact received notification of the federal safety agency Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
The contact owns a 2021 GMC Yukon. The contact stated that while accelerating, the vehicle jumped and hesitated while accelerating until the vehicle exceeded 20 - 25 MPH. The contact stated that at 1,500-2500 RPM, the failure recurred. There were no warning lights illuminated. The contact stated that while looking online, the contact discovered information about the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling) with a similar failure. The dealer was contacted, and it was confirmed that the VIN was not included in the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling). An appointment was scheduled for the vehicle to be diagnosed. The vehicle was not repaired. The manufacturer was informed of the failure, and it was confirmed that the VIN was not included in the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); because the manufacturing date was 3 months after the date for the vehicles listed under the recall. The manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 75,000.
The contact owns a 2021 GMC Yukon. The contact stated that while driving at various speeds, the vehicle experienced a loss of automotive power. The check engine warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and it was determined that the lifters needed to be replaced. The vehicle was repaired out of pocket. The check engine warning light became illuminated again after the repair. The vehicle was taken to the same local dealer, where it was diagnosed, and it was determined that the fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken to another local dealer, Ed Rinke Chevrolet Buick GMC CO. (26125 Van Dyke Ave, Center Line, MI 48015) for a second opinion, and remained at the dealer for further investigation. The vehicle was not yet repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 67,000.
The contact owns a 2021 GMC Yukon. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.
ESC light came on, knocking noise started, blinking engine light, car started lagging. I was just getting onto freeway and my slow speed could have caused an accident. I have taken it to Lithia Cheverolet of Redding where they diagnosed it. All the warning lights came on as the problems happen all at once. This is message from the dealer/service center: Update: REMOVED CYLINDER HEAD AND INSPECTED CAMSHFT AND FOUND DAMAGE ON THE CYLINDER 8 LOBE.
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, where it was confirmed that the failure was the result of an unrepaired recall. The contact was informed that the parts were not yet available. The contact had received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, parts were not yet available. The manufacturer was not made aware of the failure. The failure mileage was approximately 81,000.
The contact owns a 2021 GMC Yukon. The contact stated that while his wife was driving at an undisclosed speed, there was an abnormal ticking sound coming from the engine. There was no warning light illuminated. The following day, the contact's wife dropped the vehicle off at a dealer for a diagnostic test to be performed. Several days later, the contact was informed that the lower bearing in the crankshaft had failed, and the engine needed to be replaced. Upon investigation, the contact discovered the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); and linked the failure to the recall. The dealer and the manufacturer were notified of the recall, and the contact was informed that the VIN was not included in the recall. The vehicle was not repaired and remained with the dealer. The failure mileage was 124,296.
Loss of some power. No haul power.
GM may be installing recalled engines into other vehicles through warranty replacements, avoiding recall accountability. I purchased a 2021 GMC Yukon built before recall N252494002. Before my ownership, the original engine failed and was replaced under warranty at 24,339 miles on 9/16/2024. The dealer verbally told me it was new, but it had salvage yard markings and no serial number—indicating it was used. This donor engine was likely from a vehicle later covered by the recall. GM appears not to track donor VINs for warranty replacements, meaning recalled engines can remain in service without repair. This creates a serious safety risk and allows defective engines to escape recall compliance. I urge the federal safety agency to require manufacturers to track and report donor VINs for used engines and major components installed under warranty so they remain subject to applicable recalls.
Dealership refused to inspect engine and provide new oil in regards to recall, they charged me $208.75 for oil that was supposed to be completed under recall L87 for GM
The contact owns a 2021 GMC Yukon. The contact stated that while attempting to start the vehicle, the vehicle started, and then the engine seized. The contact stated that the gear shifter failed to shift into the intended gear. There were no warning lights illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The manufacturer was not made aware of the failure. The failure mileage was approximately 31,000.
Engine started missing out. After taken to dealer, cylinders 5 and 6 were filled with oil. New engine is needed, and is on nationwide back order as thousands of these are effected.
While driving the vehicle, the engine started to make a knocking noise and we experienced illumination of the check engine light. We also experienced engine performance issues with hesistation and reduced acceleration. We were able to take the vehicle to a GM dealer and it was determined that the lifters and crankshaft were defective and need to be replaced. There is a warranty out for 2021 GMC Yukon Denali vehicles that were manufactured less than a year after ours that have currently have a recall issued by GM for the same problems that we experienced. My wife and two young children, ages [XXX] and [XXX] , frequently ride in this car and catastrophic engine failures put their safety and livelihood at serious risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2021 GMC Yukon. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was not made aware of the issue. The contact had not experienced a failure.
The contact owns a 2021 GMC Yukon. The contact stated while driving 40 MPH, the vehicle unexpectedly stopped, and the engine seized. The contact stated that there was not enough power from the engine to drive the vehicle to the shoulder of the road. No warning light was illuminated. While attempting to restart the vehicle, the vehicle failed to restart. In addition, the contact stated that his family were occupants of the vehicle during the failure. The contact stated that it was a frightening event for his family. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that parts were unavailable to repair the vehicle. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the federal safety agency Hotline to report the failure. The failure mileage was approximately 89,000. VIN tool confirms parts not available.
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