2021 GMC YUKON Complaints

Service Safety Restrain System message keeps appearing after taking to dealer a few times. It will go off and on intermittantly and not sure the airbags are actually functional. This seems to be a common issue based on an internet search across multiple GM products that does not have a known fix. Also, the driver seat shifts slightly when making turns.

GM has consistently failed to deliver safe and reliable vehicles to the american public. I purchased a 2021 GMC Yukon Denali XL and the transmission needs to be replaced completely after the valve body was already replaced once. This issue proves to me that GM is not a reliable and trustworthy brand, with poor business ethics and a track record of having to be bailed out by our very own government for low quality vehicles. I am asking for the Federal department to investigate thoroughly and recall all transmissions that could negatively impact american families. These vehicles are not affordable for the average household and the quality of workmanship does not match the price point. Please find attached a document from GM directly that covers all recalls and previous repairs done to my vehicle. I am now fighting to get my down payment refunded as well as the payments that I have made on my vehicle.

I own a 2021 GMC Yukon Denali that had TOTAL BRAKE FALIURE last Tuesday. I had it towed to a local GMC dealer and are repairing it under warranty. I was lucky to be on a back road when my brakes went out. I had no warning lights come on prior to hitting the brake pedal and was able to coast to a stop on the shoulder When I applied the brakes, the pedal went to the floor and did nothing. You can't stop the car with the parking brake because it is electric. My concern is what if I was on a busy road when this happened or what if this happens to a family in traffic they could be seriously hurt or worse yet killed. I do have good photos of my instrument panel with all of the warning lights coming on after I tried to stop. In good conscience feel that I have to at least try and report this to GM, the state and anyone else that will listen. If nothing comes of this at least I tried and just hope no one gets hurt if this happens again. My wife refuses to ride in that vehicle until I have solid answers. The dealer said they will have my car repaired this week and are replacing the master cylinder and ECS This is fine but why did it happen and how can I be sure it won't happen again? I believe in GM and have a 2023 Yukon Denali on order. I would hope that after 3 years of this model they have most of the little quirks worked out. A rep from GM did contact me and at first was talking about buying my car back but changed that today. My case number is 9-8497380349 . The problem is I have no idea when my new car is coming in our should I just cancel it and find something else. In my opinion this is a very serious problem.

The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 30 MPH and accelerating to approximately 40 MPH, another vehicle suddenly pulled in front causing the contact to apply the brakes. While attempting to apply the brakes, the brake pedal went to the floor. The traction control, ABS, ECF, and check engine warning lights were illuminated. The contact then pulled over to the side of the road where the vehicle eventually coasted to a stop. The contact drove the vehicle slowly to the residence. The contact had the vehicle towed to the dealer who diagnosed that the brake master cylinder and ECF needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and opened a case. The approximate failure mileage was 24,000.

The contact owns a 2021 GMC Yukon XL. The contact stated while stopped in traffic, the contact felt the vehicle shaking. The contact stated that the vehicle stalled and lost motive power. After several attempts, the contact was able to restart the vehicle and shifted into neutral(N) to move the vehicle to the side of the roadway to safety. The contact stated that the vehicle was running rough before losing motive power and stalling. The contact was unable to restart the vehicle. The vehicle was towed to the dealer and fuel pump was replaced. The manufacturer was not contacted. The failure mileage was 15,658.

The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 5 mph the vehicle suddenly stalled. The contact had to press the accelerator a few times before the vehicle moved. Then after reversing out of a parking space then attempting to put the vehicle in drive and accelerate forward the vehicle stalled instead. The contact was unable to recall any warning lights. The vehicle was not able to go into neutral. The vehicle was towed to the dealership who diagnosed that the fuel pump module failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 9,000.

I was involved in a vehicle accident on 10/6/2021 where my vehicle was stuck by an uninsured motorist driving recklessly on the interstate causing a total of 4 car collision. My vehicle was a a 2021 GMC YUKON SLT SUV, in which I was struck on rear drivers side quarter panel and again by another vehicle in the front bumper by another vehicle that struck in the rear bumper by the reckless driver. With my vehicle being struck by two vehicles I was shocked to learn the Onstar safety security features did not detect or contact me regarding the accident. It wasn’t until the wrecker driver arrived to pull my vehicle onto the tow truck that I received a diagnosis notification email from o star about my antilock braking system. Although I was wearing my seat belt, the impact of the collision was very shocking, my chest and neck struck the steering wheel, my glasses were knocked completely off my face on to the passenger side floor board, my personal belongings in the passenger seat, were thrown and scattered over the passenger floor area. Once the emergency authorities were on the scene everything was about over I contacted Onstar via phone, and asked why wasn’t I contacted or my accident detected, and the call taker/on star representative advised me because my airbags wasn’t deployed, they did not receive a notification or alert regarding my emergency. I have attempted to make contact with Onstar several times since the accident and as of today I have yet to get an answer of why my air bags did deploy and why the emergency sensors did detect the impact notify emergency services as this is a feature that i was charged for monthly and added protection that I counted on to assist me but very much failed me at my time of need.

After pulling out from parking lot into roadway, steering wheel locked up (right) and vehicle proceeded uncontrolled into a telephone pole - injuring driver. Driver stage 1 & 2 together with seatbelt pretensioner deployed upon impact. No warning lamps or defect symptoms prior to time of failure. Inspection revealed DTC codes for power steering of U0420:00 (invalid data received from power steering module) and U3000:49 (control module internal malfunction). Scanner evidences power steering position sensor data not being reported. Vehicle VIN indicates that it was included in NHTSA recall 21V455000. Power Steering Component Part Nos: 85103817, 848935231 and 85116776.

I had just left the house driving through my neighborhood at about 35 MPH when for no reason the emergency braking engaged. The road was deserted, no other vehicles, pedestrians, dogs or objects in roadway. There was a momentary red dash alert, but I didn't have time to read it.

Total Engine Failure. Cause UNKNOWN, Driving on highway from family vacation. For 1-2 miles prior to incident car begins running rough, High RPMs, Engine pressure rising. Receive a warning on dash. 'Engine shutting down. No prior warnings or issues in the vehicle life. Pull over' Engine will not restart. Have to call two tow drivers, neither are able to get engine into neutral to tow. Second tow driver uses makeshift skids to pull car onto tow truck. Is towed to nearest GMC dealer. At next business day the car is inspected and prognosis is total engine failure. This was a 2021 just over a year old with 22,000 miles. Vehicle shut down every person in vehicle could have been injured if we had been unable to pull over to a safe location, were driving 70mph on highway.