2023 GMC YUKON XL Fuel/propulsion System Problems

It has been several months since recall on L87 was issued. My truck now has over 44k miles and I’ve contacted the dealer, they note there’s no fix in sight. I’ve been having some issues with engine sluggishness on acceleration at times and I’m concerned this is related to the recall. I’m now stuck with this potentially dangerous vehicle with no fix, and am concerned. I also can’t get a fiar trade in value due to open recall. Overall, I’m stuck with a defective vehicle that GM refuses to address.

Vehicle surged, lost all power while driving, switched to neutral and would not restart.

Vehicle was traveling on interstate and lost power/propulsion and automatically shifted to neutral. Grave danger for eminent death/injury as a result of possible accident.

I own a 2023 GMC Yukon Denali XL (VIN: [XXX] ) currently under active recall for the L87 6.2L engine. GM has no remedy available and has acknowledged a risk of complete engine failure and loss of propulsion, which could occur without warning. This is the primary vehicle I have for transporting my family of seven, including a toddler. I am significantly upside down on the loan, and the dealership cannot guarantee it is safe to drive. I am requesting that NHTSA escalate the urgency and hold the manufacturer accountable for timely resolution or replacement.” INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I’ve inserted the question and their answer: What component or system failed or malfunctioned, and is it available for inspection upon request? Lifter valve number six failed causing it to shatter and send pieces of it throughout the engine along with other debris into the cylinders. How was your safety or the safety of others put at risk? Vehicle had loud engine knock, pulsation of power, had to pull off on main highways due to loss of power over 400 miles away from home. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, engine was serviced by GM dealership in Baldwinsville, NY for over $8,500. Will attach copy of bill. Now is doing same thing, again. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? GM as stated above. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Check engine light flashed, traction control light came on.

While driving at approximately 30 mph in moderate traffic on the interstate during a return leg of a 370-mile trip, my vehicle unexpectedly shifted into neutral and became unresponsive. The dashboard displayed the warning message: "condition not correct for shift," and despite repeated attempts to restart the engine, the vehicle would not engage. Although the electrical system remained active, I had no propulsion. Critically, the vehicle became immobilized in a **very dangerous curve on the interstate**, presenting an extreme safety risk to myself and others. The car could not be manually shifted into neutral for towing, prompting Illinois Department of Transportation (IDOT) to declare the location unsafe. I was stranded there for over three hours, after dark, in a vulnerable and exposed position. During the forced tow process, two rear tires were destroyed and the two front tires sustained major damage. In the days leading up to this incident, the vehicle had also shown signs of malfunction, such as delayed acceleration from a stop and occasional lurching forward — symptoms consistent with the defect described in the recall.

I am formally requesting a complete refund for my vehicle. It has only 6,300 miles, and the remedy provided for the recall does not adequately address the issue. The recall explicitly indicates defects in the engine components (rods/cam shafts) that may lead to a loss of propulsion. Merely inspecting the vehicle and adding thicker oil does not resolve the underlying problem; it only postpones the inevitable expiration of my warranty. Currently, there are no warning lights illuminated, as the vehicle is not driven frequently. The recall raises significant concerns, and GM should be taking more substantial measures than simply applying thicker oil as a solution. This approach feels like a temporary fix rather than a genuine resolution. I have communicated with the dealership, and have been informed there is currently no solution available for this matter. They are awaiting further instructions on how to proceed. I request a more thorough investigation into this issue for an appropriate refund, and I also wish to have this matter documented for future reference.

I am writing to express serious safety concerns regarding our 2023 GMC Yukon XL Denali, which has been in our possession for less than two years and has only 24,000 miles. On multiple occasions, while driving at high speeds on the freeway with our four young children, the vehicle unexpectedly lost power and shifted into neutral without warning. This occurred approximately four times on March 9, 2025, when we contacted OnStar for assistance. Despite their response indicating no alerts on their end, we were advised to reach out again if the issue persisted. Unfortunately, the problem did occur again on March 16th, which prompted us to contact OnStar and have the vehicle towed to the nearest dealership for further evaluation. The service department has since informed us that the motor requires replacement. Upon conducting additional research, it seems this may be a known issue with many vehicles manufactured by GM around the same time. We are deeply concerned by this safety hazard, especially given that the malfunction could have led to a life-threatening accident. While we are grateful that we were fortunate enough to avoid any serious consequences, we believe a solution beyond standard repairs is necessary to restore our confidence in the safety of this vehicle. Our family’s well-being and trust in the reliability of our vehicle are of the utmost importance.

Our 2023 GMC Yukon XL Denali that has suffered multiple severe mechanical failures well beyond what is reasonable for a vehicle of this class. G At approximately 14,000 miles, the vehicle’s 6.2L engine catastrophically failed, rendering it inoperable and requiring a full engine replacement. The engine seized and failed while operating the vehicle with her 3 small children on board and nearly caused a catastrophic accident. As a result, the vehicle was out of service for eight weeks, an unreasonable disruption and an unacceptable failure for a luxury SUV of this caliber. Now, (02/11/2025) at just 20,400 miles, the vehicle’s injectors have failed, further reinforcing that this vehicle is defective, unreliable, and unfit for continued ownership. This vehicle was purchased with the expectation of owning a dependable, high-performance SUV—not one plagued with major mechanical failures at such low mileage. The repeated, severe defects have substantially impaired the vehicle’s use, value, and safety, leaving use without reliable transportation for extended periods. Given these circumstances, it is clear that this vehicle does not meet the quality and durability standards expected from General Motors’ flagship SUV lineup and present SERIOUS risks of catastrophic injuries and/or death.

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.

Driving at 70 mph, the vehicle shifted into neutral without warning. When attempting to place the vehicle back into drive, the vehicle dashboard Siad "vehicle condition not met" . I slowed the car and pulled over. It shifted into park but now will not start and will not go into neutral for towing.