2020 GMC Yukon Owner Complaints

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.

10/3/2022

Transmission slipping and damage

7/9/2023

While driving to Lake Placid, NY, I experienced sudden loss of propulsion as I was driving approximately 60 mph. I was able to brake and pull over to the shoulder. I was not able to restart the vehicle - engine was dead. We were flat bed towed to a garage in Lake Placid where it was confirmed that the engine was inoperable. The vehicle is now at. GM dealer in Potsdam, NY. I believe this engine should be part of the recall!!

7/9/2025

My vehicle went from driving perfectly to startling and not going pass 45 in a matter of two days. I was getting all maintenance done at dealer always on time had just service it. When all of a sudden it started making a jerking/ skipping feel as if I was accelerating too hard. Took it to get checked and the code that came up was (TCC)torque converter clutch. I spent 6000 to rebuild the transmission and kno the engine has a tap tap noise. Once again I took it in and now it’s the lifters in the engine. No warning light have ever popped up

10/4/2025

Hello, I’m calling about the GM transmission recall recently announced in March 2025 affecting 2020 Yukon vehicles. My Yukon experienced what I believe is the exact same issue described in the recall. Our vehicle lost forward gears and almost caused a crash. A certified mechanic confirmed the transmission fluid was burnt and full of clutch material, with internal transmission damage. We are asking for this to be handled under the recall, as the issue directly matches GM’s known safety defect. We need this resolved immediately — the vehicle is unsafe to drive and the failure happened before we even knew about the recall. Our GMC Mechanic stated the following : Needs immediate attention Recommended service Transmission: test drove verified no forward gears after 3 minutes of driving. fluid brown and burnt full of clutch material. internal damage to transmission. A transmission flush is a process that makes it possible to clear the old transmission fluid from the vehicle's transmission. This process also helps to remove residue of older transmission fluid from the converters, coolers, and cooler lines that often are part of the design for the transmission.

3/25/2025

My vehicle went from driving perfectly to startling and not going pass 45 in a matter of two days. I was getting all maintenance done at dealer always on time had just service it. When all of a sudden it started making a jerking/ skipping feel as if I was accelerating too hard. Took it to get checked and the code that came up was (TCC)torque converter clutch. I spent 6000 to rebuild the transmission and kno the engine has a tap tap noise. Once again I took it in and now it’s the lifters in the engine. No warning light have ever popped up

10/4/2025

LINE KEEP ASSIST NOT WORKING PROPERLY. ASSISTANCE SYSTEMS FOR PARKING OR BACKING NOT WOKING PROPERLY. LANE CHANGE ALERT NOT WORKING PROPERLY

2/5/2020

THE RENTED 2020 TAHOE WAS STATIONARY. A PASSENGER SITTING IN THE LEFT THIRD ROW SEAT BECAME STUCK IN THE SEAT BELT. SHE WAS UNABLE TO OPEN THE SEATBELT CLASP AS IT GOT STUCK AND FAILED TO UNLATCH. THE MORE THE PASSENGER STRUGGLED TO UNLATCH THE SEATBELT, THE PROGRESSIVELY TIGHTER IT BECAME. PASSENGER COULD NOT DISENGAGE THE SEATBELT CLASP BY PRESSING THE TINY RED BUTTON. THREE OTHER PASSENGERS TRIED TO RELEASE THE SEATBELT AND COULD NOT. PASSENGER WAS TRAPPED WITH TIGHT SEAT BELT HOLDING HER IN. OTHER PASSENGERS CALLED EMERGENCY PERSONNEL WHO ALSO COULD NOT RELEASE THE EVER TIGHTENING SEAT BELT. PASSENGER WAS RELEASED WHEN THE RANGER CUT THE SEAT BELT WITH A SEATBELT CUTTING EMERGENCY TOOL. IT WAS A VERY SCARY AND DANGEROUS EXPERIENCE. LATER, SOME OF OUR GUESTS FIGURED OUT THAT YOU HAVE TO PRESS THE TINY RED BUTTON ON THE LEFT LATCH WITH A PIECE OF THE RIGHT BUCKLE. A PASSENGER SHOULD BE ABLE TO RELEASE THE SEATBELT BY DEPRESSING THE RED BUTTON. A PASSENGER CANNOT EVEN REACH THE BUTTON FROM THE SEATED POSITION AS THE BUTTON IS TINY AND CANNOT ACCOMMODATE AN ADULT FINGER TO DEPRESS IT. THIS IS THE WORST EXAMPLE OF ENGINEERING I HAVE EVER EXPERIENCED. I AM FRANKLY AMAZED THAT THIS DESIGN PASSED ANY SAFETY TESTS. PLEASE ADDRESS THE ISSUE BEFORE SOMEONE IS HURT OR KILLED BY BEING TRAPPED IN THE VEHICLE AND UNABLE TO ESCAPE. *TR

6/22/2020

TL* THE CONTACT OWNS A 2020 GMC YUKON. THE CONTACT STATED WHILE REVERSING, THE BACK OVER PREVENTION CAMERA WAS OBSTRUCTED AND THE CONTACT WAS UNABLE TO SEE A PROPER IMAGE WHILE THE VEHICLE WAS IN REVERSE. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER SHELTON BUICK GMC, INC. (855 S. ROCHESTER RD, ROCHESTER HILLS, MI 48307, (248) 266-2156) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE CAMERA FUNCTIONED AS DESIGNED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 6,000.

1/5/2021

TL* THE CONTACT'S WIFE OWNS A 2020 GMC YUKON EQUIPPED WITH CONTINENTAL TIRES, TIRE LINE: CROSSCONTACT LX SPORT, TIRE SIZE 245/50/R20. THE CONTACT STATED WHILE DRIVING 65 MPH, THE DRIVER'S SIDE FRONT TIRE EXPERIENCED A BLOWOUT. THE VEHICLE WAS TOWED TO DAVID BALES BUICK GMC (1327 JACKSBORO PIKE, LAFOLLETTE, TN 37766, 423) 562-8431) WHERE THE VEHICLE WAS STILL AWAITING A DIAGNOSTIC TEST. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 14,900.

4/5/2021

Transmission slipping and damage

7/9/2023

Transmission slipping and damage

7/9/2023

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.

7/25/2023

The contact owns a 2020 GMC Yukon. The contact stated that while refueling the vehicle, the fuel filler neck was not allowing fuel to flow into the tank. There were no warning lights illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the fuel filler neck. The contact was informed that the fuel tank filler assembly needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was approximately 42,000.

6/26/2024