2023 GMC YUKON XL Complaints

Engine failure - Yes, vehicle at dealer Engine failed on a busy road during rush hour, family in vehicle. Dealer confirmed engine needs replacement, lead time unknown. Expected later than Oct 2025. Inspected by certified dealer service dept. Warning lamps prior to failure, roughly .5 miles prior. Limited power.

While traveling on vacation, my family and I experienced a catastrophic engine failure in our GMC Yukon Denali, leaving us stranded in a small Texas town. After having the vehicle towed to the nearest dealership, we were informed that the engine is seized and requires a full replacement. Unfortunately, the dealer has no estimated timeline for when GM will be able to provide the necessary replacement engine, leaving us in a difficult and uncertain situation. This has caused significant disruption and hardship for my family.

I have had this vehicle serviced twice for the electrical issue on the running boards. While driving and while parked the running boards constantly deploy and store on their own or get stuck at a half way position. This will happen even if I have them turned off or on.

On [XXX] while on vacation out of state with my family our 2023 GMC Yukon XL Denali stalled out on [XXX]. After safely navigating through 5 o'clock traffic just outside of Atlanta, the vehicle would not turn over or even attempt to start back up. We contacted onstar for assistance and was advised to stay with the vehicle while they dispatched a tow truck. After approximately 2 hours we contacted onstar again and was advised a tow truck wouldn't be available until morning. We then were able to obtain a ride with Lyft that totaled over $100 with 5 people and was given a $50 credit. I was forced to use Hilton Honors points to book a hotel. Then after the next morning around 10am I was advised the tow truck was enroute to the car. I then took an Uber to Enterprise where I was able to get a rental vehicle. And made my way to the dealership that our Yukon was towed to. After speaking with the service advisor I was told they wouldn't even have a diagnosis for a couple weeks. So we proceeded to head home (with the rental breaking down and several other issues we had to overcome). After we were able to get another rental vehicle, we made it home around 2am. We returned this rental vehicle as it was not suitable for our family, and contacted GM in hopes to get a rental vehicle while our $120k vehicle is sitting in the parking lot of a dealership 8 hours from our home. Only to be told they'd allow $44/day for a rental and we would need to rent it initially and they would reimburse us after we submitted our receipts. Unfortunately $44/day does not get us anything that can accommodate our family and finances are not allowing for this at this time. So we are managing with 1 car. On 1/9, we received a call from the dealership stating our engine was locked up, non repairable and they were waiting for guidance from GM. Then on 1/23 I was then advised by my GM rep that she was transferring the case to someone else and they would advise when the new engine has shipped. Unacceptable INFORMATION REDACTED PURSUANT TO THE FREEDOM OF I

My vehicle stopped on the middle of highway when the engine seized. I had to call tow truck and tow it to a dealer. It’s been 2 months without my vehicle, the dealer has engine on a back order and offer no remedy

On [XXX] I was driving about 75mph on the freeway and suddenly the vehicle gear switched from drive to neutral. The vehicle dashboard read "vehicle condition not safe for shift" I tried to put the car back in drive by pushing the drive button but the vehicle was stuck in neutral. I pressed on the gas but it was not working since the car was in neutral. Since I could not use the gas to move forward, I could not go up on the ramp and was stuck on the busy freeway between the off ramp and the busy lanes of cars going 70+. The right rear end of my vehicle was in the offramp lane. I started to panic because I had my [XXX] daughter in the car. The steering wheel was completely locked and the rear axel was locked as well. There was no warning before the engine cut off. The electrical was all still working. I called AAA for a tow and 911 for CHP assistance since I was in dangerous spot. Took it to GMC Carlsbad Service, advisor Jason just called me and told me the engine had seized up and will most likely need the engine replaced. On 1/9/25 I had the car oil changed at the GMC service department in Escondido where I purchased the car. The vehicle has an open ticket and GMC is conducting a full investigation. I am told the whole engine will need to be replaced and will take 4 weeks from 1/22/25 to fix. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My engine stopped while I was driving. Unable to accelerate and the car will not start and is dead. Transmission light and DEF service lights came on. Luckily I was able to pull over to safety, barely. It was towed to the GMC dealership and waiting for it to be looked at. There were NO warning lights that came on previous to when this happened. This is a HUGE SAFETY concern for GM and it needs to be a recall because many, many others have reported the same complaints.

The vehicle stopped, and I was unable to manually put it in Neutral. I had it towed to the dealership and was told that my engine was froze up. I have 25,000 miles on my Denali. This is not normal. My truck just "stopped" and would not move on a busy traffic road- why are the vehicles failing at less than 30,000 miles? I still owe quite a bit and now wondering what is going on with GM? I saw the video on Tik Tok about engine failures and this is my truck.

The contact owns a 2023 GMC Yukon. The contact stated while the vehicle was parked, the vehicle shuddered. The "Service Traction Control" and the "Forward Collision System Unavailable" message was displayed on the instrument panel. The check engine warning light was illuminated. The failure occurred on several different occasions. The vehicle was taken to a dealer where it was diagnosed that the fuel injector needed to be replaced. The vehicle was repaired however, over time the failure still persisted. The vehicle was taken back to the dealer where it was diagnosed once again that the fuel injector needed to be replaced. The vehicle was repaired however, over time the failure still persisted. The vehicle was taken back to the dealer for the last time where it was diagnosed once again that the fuel injector needed to be replaced. The vehicle was repaired however, over time the failure still persisted. The manufacturer was notified of the failure. The failure mileage was unknown. 

I purchased a 2023 Yukon Denali Ultimate new in December 2023. It has 25,000 miles on it. Last week my wife was driving on the interstate and the vehicle abruptly shut down leaving her stranded on a narrow shoulder on a bridge. After it was towed to the dealer, the diagnosis was a connecting rod failure requiring an engine replacement. It was in the shop 2 weeks prior because the vehicle shifted into neutral on its own while driving at 60 mph on the highway, but the dealer found nothing wrong