2023 GMC Yukon XL: misfire or rough idle

Filed Sep 23, 2026 · Engine · CA

This is an ongoing problem from date of purchase, before the normal oil change time the low oil light comes on. When i check the oil dip stick it is in fact low. I have to add at least 2 qts of oil to get it to the right level. Time frame would be at least once every 2 months under normal CA driving conditions. Also does have a rough idle and noise that sounds like the motor is going to come apart on startup. I have takin it to the dealer, they performed consumption test and checked the motor recall. The dealer told us that our motor passed the recall inspection, made the changes, oil, oil cap, etc. Then told us it passed the consumption test. Since then I still have to add oil between oil changes. We were told by the service tech that even if the motor is bad, there is no replacements at this time and the vehicle would just sit at our dealership until we can get a replacement. No one has been hurt at this time. I'm just waiting for the motor to lock up. The vehicle can be inspected upon request. The only warning light that comes on is the low engine oil warning.

Filed Aug 31, 2026 · Engine · MI

After engine passed check for possible replacement because of recall, engine failed 5000 miles after. Even though I have a new engine now, there is no warranty coverage other than the lower part of the engine. I am already having misfire issues.

Filed Aug 30, 2026 · Engine, Transmission · NY

PICO scope test #FDYZ295894391 on engine for recall #N252494003 engine , passed test. Drain oil filled with 0-40 replaced oil cap. Date 09/19/2025, mileage in 20142/mileage out 20142. Vehicle runs rough. Not stable at times. Vibration noise coming from the motor at times.

Filed Jul 24, 2026 · Electrical, Engine · CT

The car just died while going 55mph on the highway. Complete shutdown but luckily both the steering and brakes worked. After stopping it wouldn’t start again. I had my three children in the car aged [XXX], [XXX], and [XXX]. It was a horrific experience. GMC did some repairs to the engine that took over two months and then the car had a few more warnings pop up just a few weeks later. GMC now says there is a misfiring in one of the positions. I’m terrified of driving this car with my children as I don’t know when it will shut off again and how bad it will be! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 7, 2025 · Engine · PA

I am reporting a serious engine failure in my 2023 GMC Yukon XL (5.3L Ecotec3 V8) at approximately 68,775 miles. The engine began to run rough with a loud chatter noise, and both the check engine light and traction control light activated. Diagnostic tests at the dealer (F.C. Kerbeck GMC) confirmed a P0300 random misfire code and revealed that the lifter on cylinder #5 had collapsed, causing damage to the camshaft lobe. The repair required removing the cylinder head and replacing the lifter, camshaft, pushrods, valves, and associated gaskets and seals. Although I was told this was covered as a ‘goodwill repair’ by GM, I was still charged $3,450 for miscellaneous charges. I find this highly concerning and question whether these charges are consistent with GM’s stated goodwill or warranty policies. In my opinion, a known lifter design flaw requiring such an extensive repair should not result in out-of-pocket costs for the vehicle owner. This failure resulted in a severe misfire and significant performance issues that I believe raise serious safety concerns, including the potential for sudden loss of power while driving. I am submitting this report to the federal safety agency to ensure this issue is documented and to request that it be included in any broader investigation into GM lifter system failures. Repair invoices are available upon request

Filed Apr 7, 2025 · Engine · NC

Vehicle started making noise and idling rough 1-2days after receiving it back from oil change. It was absolutely fine and out of nowhere this happens. I’m great with cars and this is my 5th GMC Yukon and I bought this one at 0 mileage so I am very familiar with this car. There is absolutely no explainable reason my car is doing this I had it inspected and the dealer told me this has been happening lately to a lot of the gmc Yukons and I would need major engine repair for a brand new car!!! Over 20k in repairs and parts. I have 6 children and we have had to abandon the vehicle on Christmas Day to drive our old 2019 GMC Yukon which I think is starting to sound a lot like the 2023 under the hood! It’s roughly idling to. I’m afraid we might be taking the bus if I don’t pay 20k. I looked to see if there were recalls but found none. there is no way engine failure should just pop up after we spent tons of money keeping these cars in perfect shape and only being serviced at the dealership. This should be investigated and repair records pulled to find people who are not aware