2021 GMC YUKON Complaints

The car is by hard shifting. The dealership found, “THE TRANS TO HAVE A SHUDDER AND DEBRIS IN THE TRANS FLUID INDICATING TORQUE CONVERTER FAILURE RECOMMEND REPLACING TRANS DUE TO TORQUE CONVERTER FAILURE SENDING DEBRIS THROUGH THE PUMP AND VALVE BODY.” The first time we brought the vehicle into the dealership they just replaced the fluid and didn’t inspect for failures. The dealership now did and if the torque converter fails the car won’t drive, if I’m on the freeway that could cause a crash or worse.

I started the 2021 Yukon Denali this morning and there was a slight squeaking noise coming from the front of the car. I began driving and the noise went away. I parked the car and completed an errand. I then started the car to return home and on the way it started making the noise but much louder. I pulled over and the car died and refused to start. GMC Roadside Assistance sent two different tow truck that were not able to tow the car. Tow Truck #1 - Flatbed truck. Car did not go in to neutral because it couldn't start so the driver said that he was unable to pull it up onto the flatbed. Tow Truck #2 - Tow truck w/ Dolly wheels. Driver said it was too heavy for his Dolly to tow the Denali. GMC Roadside Assistance then said that they're two trucks were unable to pickup the Denali and that I was on my own to call and get a tow truck and they would reimburse me. I am on the side of the road all morning not knowing what tow truck company nor what type of tow truck to ask for...... Denali still does not start and am now awaiting a local tow company to make the pickup. GMC Roadside Assistance was a total failure.

The 6.2 engine started ticking now. It needs to be rebuilt. It's ridiculous. We service it every 3000 miles. Our 2017 Sierra had a valve stick that ruined the cam. It has the same 6.2 engine with only 78,000 miles on it.

The transmission went out. Torque converter put metal all through the transmission. While driving at highway speeds in traffic almost got rear ended

Complete engine failure due to lifters going bad in return had to replace the entire thing

One bank of lifters went out while under warranty and were repaired then the other ones went out shortly there after.

Was driving normal down interstate. Interstate has two barrie walls making it a two lane road with no shoulders. Car was almost rear ended 3 times while it was stopped in middle of interstate. Me, my husband, my [XXX] , [XXX] and [XXX] were all in the car. I had to jump out the car while it was still rolling to make sure my children made it to safety before someone didn’t see us and hit us at 70mph. We had to cross the road and jump over a barrier in the construction zone. It took our high way patrol 35 mins just to show up and shut the road down to get the vehicle moved. According to the GM mechanic, a rod went through the block causing a hole. There was no warning of this happening, the car made noise and the vehicle automatically said low oil pressure, shut vehicle off, then an instant pop and smoked everywhere. The motor is on back order and won’t be able to be replaced for over 6 months if that. We had just purchased the vehicle and the motor was blown not even 3 hours after owning it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Months after a bought the car brand new my engine failed, GMC took months to replace the engine leaving me without a car for months, while paid out of pocket for a rental. Further I’ve had numerous transmission issues that and other issues leaving the car in the dealership shop for months.

My vehicle showing service safety restraint system and airbag light . When check with dealer code b14dc has appeared ( Driver inboard seat side air bag high control).

I was driving with my [XXX] son and my car just stalled out in the middle of the road. I couldn’t start it and we were stuck in the middle of the road. My husband arranged for a tow and the repair shop (safe auto repair Mont Belvieu) told me that this type of thing they have seen a lot of. The fuel pump power control module needed to be repaired and they said when that happens it sometimes shorts out the fuel pump system too. They said they had to repair 4 like this already during the week. My neighbor said the exact same thing happened to her friend gmc at4 a month ago and was also driving and the car just stopped. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)