2020 GMC Yukon Xl Problems

My family drove from [XXX] to [XXX]. Upon arrival check engine light came on, we proceeded to a local shop, by the time we arrive check engine light was flashing and engine was knocking and was clearly malfunctioning. Shop owner recommended we transport the vehicle back home as service shops in the area were experiencing high volume and parts shortages. We had vehicle towed to a local shop in [XXX]. The engine is giving diagnostic codes P0300, P050D, [XXX] with internal knocking and tapping. Vehicle has been kept current on all oil changes and has no external leaks. GMC wants at least $12,000 to replace the engine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The engine light came on and started making noise. We drove it to a mechanic shop, and they said the code stated camshaft and other component issues, but the engine ended up failing completely and was rebuilt. We initially checked for recalls and our VIN did not show any; however, we recently became aware that our engine (6.2L) might be part of the ongoing current problems associated with a recall. We are hoping that GMC will cover any remaining repairs and/or reimburse us for the thousands it has cost us.

Without any indications of a problem our transmission began making a loud whining noise. The evening before it was fine and the next morning on startup the noise just began. The Vehicle only has 45,000 miles on it and the transmission had been serviced at the recommend manufacturer interval. Took it immediately to my auto repair shop where it was diagnosed as a transmission failure (they has seen this before) and told not to drive until replaced due to safety issues related to the failure. Unfortunately, due to a shortage of these needed 10 speed transmission I waited over a month for the vehicle to be repaired. The shop contacted GM to inquire about any warranty help but was told there was none.

My 10 speed transmission on my 2020 Yukon XL Denali experienced a total failure. The vehicle will not move under its own power. General Motors has ZERO information on when a replacement Transmission will be available. Some info online shows it could be months. I am told that one dealership out of Eden Prairie, MN has over 40 on back order and some since August 2025. They claim the issue stems from a valve body. Their communication has been terrible and no one within GM that I have spoken to has any information on what is being done. This is completely unacceptable and I believe it is part of a larger issue. They are making it seem like it’s not important and that needs to change.

Driving on the highway when the steering warning light came on and then I had a loss of complete steering on the highway. Somehow was able to get off the highway but not completely off the road. Back end of the vehicle was still in harms way I could not turn that wheel at all this is a complete safety issue and could have easily caused an accident and could have been deadly. There was no warning before that just went out while driving at highway speeds on the highway. Also had to wait two hours for a tow. Vehicle is currently being diagnosed at the dealer and will provide all receipts once completed. This is an issue that needs to be addressed. Huge safety concen

I was driving down the highway, and my wife and I decided to stop at Costco to get protein bars and gas for the drive home. We also had a [XXX] , [XXX] old, and [XXX] in the car. As we were approaching the end of the exit ramp at approximately 30 miles per hour, the engine jerked the car two or three times then died. When it died, I lost power steering and the car slammed to a stop. The car also displayed an alert about my tow breaking system. I tried to restart it, and smoke began rising from my engine bay. I stopped trying to restart, and got my family onto the hill beside the exit while waiting for a tow. The tech at the GMC dealer stated that the engine had seized on me while driving. The cam shaft can rotate a small amount one way before getting blocked, and likewise the other way. Tech believes that the bearing is responsible, but will not be doing a tear down until September 2. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Multiple repairs on brakes and tires are mismatched old since purchased in 2023 tires deflate gas cap missing

Driving today and car started rattling and pouring transmission fluid on the way home today. Barely made it home.

Multiple repairs on brakes and tires are mismatched old since purchased in 2023 tires deflate gas cap missing

I was driving down the highway, and my wife and I decided to stop at Costco to get protein bars and gas for the drive home. We also had a [XXX] , [XXX] old, and [XXX] in the car. As we were approaching the end of the exit ramp at approximately 30 miles per hour, the engine jerked the car two or three times then died. When it died, I lost power steering and the car slammed to a stop. The car also displayed an alert about my tow breaking system. I tried to restart it, and smoke began rising from my engine bay. I stopped trying to restart, and got my family onto the hill beside the exit while waiting for a tow. The tech at the GMC dealer stated that the engine had seized on me while driving. The cam shaft can rotate a small amount one way before getting blocked, and likewise the other way. Tech believes that the bearing is responsible, but will not be doing a tear down until September 2. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Ligths seal are defective Wich cause failure because humidity create corrosion on main light board and lights suddenly stop working

The Navigation screen system is flickering and goes completely black and kept coming on and off Switching from USB to navigation to radio to home screen And sometimes affect the signal lights also when I pull out the USB under the armrest it's super Hot ... I was wondering if its a Recall also I have 2 friends having the same problems on Chevrolet suburban 2020

The contact owns a 2020 GMC Yukon XL. The contact stated while driving at an undisclosed speed, the rear passenger side tire seized. The contact stated the vehicle was skidding, and the contact noticed an unusual sound. The vehicle was taken to an unknown dealer, but was not diagnosed or repaired. The contact related the failure to an unknown recall; however, the VIN was not included. The manufacturer was made aware of the failure, but no assistance was provided. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 46,000.

GMC SUV - Hydroplaned -- could not achieve Traction Control despite moving away from water patch.. Front Angle Crashed into Concrete Median; All Side Airbags Deployed, No Front Airbags Deployed.

The contact owns a 2020 GMC Yukon XL. The contact stated that upon attempting to start the vehicle with the key fob, messages that the key fob was not connected, to put the key fob in the compartment, to push the brake, and that the battery light was low, were displayed. The contact stated that he was able to start the vehicle by pressing the Push to Start button. The contact stated that the failure occurred intermittently. Additionally, the contact stated that upon starting the vehicle, the engine made an abnormally loud banging sound, and then the engine made an abnormal clunking sound that persisted while the vehicle was idling. The contact turned off the vehicle. The vehicle was towed to the dealer, where it was diagnosed that two pistons had separated from the engine. The dealer recommended an engine replacement. The dealer also informed the contact that a manufacturer field technician would perform an additional inspection of the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 11,000.

Pressed the air condition button and engine turned off while driving. Vehicle engine knocking and engine shaking. Will not go over 30 miles an hour Take it to the dealership and all they say is it's the air filter. Engine light turns on Traction control light stays on Warning of decrease engine speed Engine not shifting properly High rpm's Dealer says there's nothing wrong

The front struts are going out on these vehicles. I know of another one that had the same issue and only had 38,000 miles on there Denali. This issue makes the front of the vehicle very stiff. Which when we were on the interstate and every time we hit a bump or a bridge crossing it would almost take the steering wheel right out of your hands. I live In Minnesota, and with the weather we have here, it was a very scary drive home with my family. I took it to my certified repair shop and they told me that I’m the 3rd one that they have seen with this problem. Thank you for your time.

GMC SUV - Hydroplaned -- could not achieve Traction Control despite moving away from water patch.. Front Angle Crashed into Concrete Median; All Side Airbags Deployed, No Front Airbags Deployed.