2020 GMC YUKON Complaints

Ambient temp was 100 degrees for reference. Had been driving about 5 hours. Went to stop and had no power assist for brakes. This continued for at least 20 miles. Stopped and confirmed vac hose was connected. I tried to remove vac hose to check for vac at booster but was afraid I might break the part. Electrical plug at vac hose booster connection was secure. Continued driving and it began to work again. Condition: brake pedal took considerable foot pressure to apply brakes. Zero power brake assist was available. My qualifications; a past ASE master teck.

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 contact owns a 2020 GMC Yukon XL. The contact stated while driving 65 MPH, the temperature gauge started rising quickly. The contact stated that the check engine warning light was illuminated. The contact was able to park on the side of the road. The vehicle was not drivable. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the transmission to be replaced. The vehicle was repaired but continued to experience the failure. The contact took the vehicle back to the local dealer, where it was diagnosed with needing the transmission to be replaced for a second time. The vehicle was repaired but continued to experience the failure. The contact took the vehicle back to the local dealer, where it was diagnosed with needing the transmission cooling line to be replaced. The vehicle was repaired but continued to experience the failure and noticed the transmission was leaking. The contact towed the vehicle back to the local dealer, where it was diagnosed with needing the transmission cooling line to be replaced for a second time. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was 127,549.

Transmission required replacing at 82,500 miles. Vehicle completely lost power during my morning commute. Thankfully, I had exited the Interstate and was on a city street with minimal traffic. Also thankful that I took and extended warranty at the time of purchase less than a year ago at 61,200 miles.

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.

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

The transmission is out. Prior to it going out, I experienced loss of power, gear slipping, shuttering and not being able to go among other things. This is very dangerous and can cause serious accidents to occur. This should not be happening on such an expensive and newer vehicle.

The A/C unit stopped blowing cold air intermittently. I'm taking it to a mechanic to find out what's going in. It's a 2020 for goodness sake.

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

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.