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The engine tries to die when in park.  While stopped at a red light, it died and stated conditions not met to shift.  Had to hit park button then restart it.  This has happened 4 times.  With & without auto start feature on

GMC YUKON 2023 STEERING

am filing a formal complaint regarding my 2023 GMC Yukon Denali, which experienced a catastrophic engine failure while I was driving on the highway with my family. The sudden failure created a dangerous situation, placing both my family and me at significant risk.  As a result of the breakdown, I was forced to pay $260 out of pocket to have the vehicle towed to the dealership. After inspecting the vehicle, the dealership advised me that the engine requires complete replacement.  There was no indication that the engine was going to go. Thankfully there was a shoulder on the highway and we were able to pull over. This could have caused an accident could've  been fatal.

GMC YUKON 2023 ENGINE

The contact owns a 2023 GMC Yukon. While the contact's wife was driving approximately 5-10 MPH on a city street and approaching a stop sign, the vehicle experienced a failure and became inoperable. The contact stated that while the driver was attempting to restart the vehicle, the battery warning light and engine warning light illuminated, and the "Low Battery - Start Engine" message was displayed. The vehicle was towed directly to a dealer to be diagnosed. The dealer was unable to determine the cause of the failure but provided an estimate for the valve springs inspection. The vehicle was not repaired. The manufacturer was notified of the failure and was working with the dealer to determine how to repair the vehicle. The failure mileage was approximately 71,481.

The panoramic sunroof has a substantial leak, even though the 2023 vehicle only has 33,000 miles on it. The drain lines are clear but water continues to significantly leak out of the rear passenger seatbelt housing onto the seatbelt. There is also significant water drainage through the rear interior lights onto the upper legs of rear passengers (children in car seats), causing a severe electrical hazard. The leaking caused by the drainage defect affects the interior lighting, the seatbelts, and is a potential electric hazard. This seems to be a common occurrence and the manufacturer should repair their defective products. The drainage pipes are obviously either not assembled correctly or the materials donât hold up. This should not be occurring in a $55,000 vehicle with 30,000 miles. I have multiple videos I can provide but the file sizes are too large to upload, so I took screenshots. I am going to pay for the repair but I should be reimbursed by GMC.

GMC YUKON 2023 EXTERIOR LIGHTING

My car started making a knocking noise under the hood 2 days prior to it breaking down (6/19 & 6/20). On 6/21/26, I was driving down the interstate WITH my kids in the car and it shut down on its own. Lights came on my dash and the vehicle quickly slowed itself down and when I pulled over to a complete stop, the vehicle shifted into neutral and shut off. I was not able to crank it back up and had to pay a tow company $243 out of pocket to tow it to our local dealership in town. My insurance only covers $200 for towing. I am a week without a vehicle and just found out Friday (6/26) that a new motor will have to be ordered but it is on back order with no idea on when it may arrive. I cannot get an answer from GM or my local dealership on if a rental will be provided.  I cannot make 2 car payments but I also have a job and cannot proceed without having a vehicle to drive. This has put me in a bind for a week already with no solution in sight. I expect GM to fix my problem asap since it is theirs to fix!!

2023 GMC Yukon 4WD — vehicle data sourced from FuelEconomy.gov.

The 2023 GMC Yukon 4WD is a capable and safe standard sport utility vehicle designed for those who need robust performance. With its powerful 6.2L V8 engine and 4-wheel drive, it's built to handle diverse conditions while offering ample space for passengers and cargo.

	2021	2022	2023	2024	2025	2026
Price	—	—	$57,400	$60,800–$85,000	—	—
Engine Capacity	5.3L	6.2L	5.3L	3L	3L	3L
Fuel Type	Regular	Premium	Premium	Diesel	Diesel	Diesel
Transmission	Automatic 10-spd	Automatic 10-spd	10 speed automatic	Automatic 10-spd	Automatic 10-spd	Automatic 10-spd
Body Type	Standard Sport Utility Vehicle 4WD	Standard Sport Utility Vehicle 4WD	SUV	Standard Sport Utility Vehicle 4WD	Standard Sport Utility Vehicle 4WD	Standard Sport Utility Vehicle 4WD

GMC Yukon 4WD (2023) Specifications