GMC Owner Shocked at How Long It Took To Get a Her Yukon Fixed: “GM, I Don’t Know How You Sleep at Night”

GMC Yukon Frustrations Featured Image
Image Credit: @lifeoncordelia/TikTok

A GMC Yukon owner has expressed her frustration over how long it has been taking for her to get her GMC fixed after sending it in with an initial sensor issue that ballooned into other problems. TikTok user Kristen Negri (@lifeoncordelia) posted the video, which currently has over 100,000 views.

Negri is the owner of a 2021 GMC Yukon XL, which has a 5.3-liter V8 engine under the hood. She said that she regularly maintains and looks after the car, which is her daily driver, but six weeks ago it went to the dealership with a sensor problem.

This is just one of a few issues that she had with the car and prompted her to take it to a dealership to fix them. However, after being told it would take two months due to parts shortages and cost up to $9,900, she decided to take it to a local mechanic.

Those problems were fixed, but not long afterwards, it developed new problems. That culminated in a lot of stress, and Negri has become incredibly frustrated with the situation surrounding her car. She can’t quite understand why it has taken so long to fix, nor when she will actually get the car back.

What Has Gone Wrong With the GMC Yukon?

 

@lifeoncordelia @General Motors I don’t know how you people sleep at night. You hate your customers but atleast your honest about that. I’m honestly at a loss. #gm #carsoftiktok #truck #fy #car ♬ original sound – Kristen

Initially, low oil pressure and low oil levels were the biggest issues, as it kept going into places that it shouldn’t. It ruined the catalytic converter. Following that, there were issues with the lifter and camshaft, and the Yukon would violently shake and cause the check engine light to come on. This was fixed by her local mechanic, but after that the car developed a P0420 catalytic converter code, intermittent shuddering, and traction-control warnings.

Things were not going well. The material within the left catalytic converter broke and needed replacing. She and her local mechanic believed the oil issue work done at the dealership had caused this failure. There was then a cylinder seven misfire, and her mechanic again fixed that problem, and all those repairs saw the car out of action for eight weeks. Negri has also been dealing with General Motors directly, further adding to her woes.

GM initially offered some assistance for the lifter replacement and the cost of a rental car, but they pulled out after she took the car to her local mechanic. GM then offered her $3,500 towards the cost of a new vehicle, but she refused that. “A discount requiring me to spend tens of thousands of dollars on another vehicle does not reimburse the money I have already spent or address what happened to this one,” said Negri.

Negri Has Been Left Frustrated by Her Yukon’s Problems

2021 GMC Yukon XL Denali Front Quarter
Image Credit: GMC

Negri was seeking answers on a lot of the car’s problems. She wanted to know why the oil warning levels were not addressed, why it took so long for parts to arrive, and why no reimbursement was offered. Negri has even submitted a complaint to the Better Business Bureau, as well as contacting GM corporate and the GMC dealership that she claimed had ignored her.

Naturally, the whole ordeal has left Negri tired and frustrated. It left her feeling like GM doesn’t care about its customers, and the last thing she wanted was to be without her daily driver for so long. Other TikTok users vented their own frustrations in the comments section. “My 2026 Silverado has been at the dealer since July 17th with less than 6k miles for a driveline vibration above 45 mph. Still no idea what is causing the issue,” said one of them. At least Negri can take some comfort in the fact that it isn’t just her who has suffered problems like this.

Author: Henry Kelsall

Henry joined Guessing Headlights in May 2026, and covers a wide array of topics ranging from EVs, American barn finds and supercars.  He’s combined his passion for cars with an interest in motorsports and steam locomotives, and has been an automotive journalist for over ten years. Henry has written for various publications including HotCars, AutoEvolution and most recently as a content writer for Supercar Blondie at SB Media.

Henry’s main love is for anything Japanese, or from Lancia, with the dream being to one day own a first-generation Honda NSX. Away from work, he partakes in his passion for steam engines, and is currently a trainee fireman at a British heritage railway.

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