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Engine
07/02/2026
6.2 engine seized again after oil change 3 days after This is my 3 rd Yukon that has done this and I’m not agreeing this shouldn’t be a recall I’ve been through this before
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Electrical System, structure
12/01/2024
The contact owns a 2024 GMC Yukon. The contact stated that there was a strong mildew odor coming from the vehicle while entering the vehicle, and there was moisture around the trunk near the wiring harness. The vehicle was taken to Modern Auto Company (6224 MO-100, Washington, MO 63090), but the cause of the failure was not found. O'Fallon Buick GMC (2150 Technology Dr, O'Fallon, MO 63368) diagnosed the vehicle with a failure of the wiring harness and stated that there was moisture entering the vehicle through the wiring harness. However, after the contact inquired about the odor inside the vehicle, the dealer refused to continue working with the contact. The manufacturer was notified of the failure, and a claim was filed, and an appointment was scheduled for service at Dave Sinclair Buick GMC (5655 S Lindbergh Blvd, St. Louis, MO 63123). The dealer informed the contact that the wiring harness appeared to have already been replaced. The dealer found no leaks inside the vehicle and info...
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Unknown Or Other, engine, fuel/propulsion System
07/08/2026
I am reporting a serious safety defect and unreasonable delay in addressing it under safety recall N252494000 (L87 Engine – Loss of Propulsion). My GMC Yukon has an illuminated check engine light and is now also overheating. According to GM’s own customer service r, this can lead to knocking, unusual engine noises, hesitation, high RPMs, abnormal shifting, reduced propulsion, and sudden loss of propulsion while driving, increasing the risk of a crash. I have contacted multiple dealerships for urgent repair: Cappllino GMC Keller Chevrolet Joe Basil All three have advised me that they do not have enough technicians to get my vehicle in for repair. Each has urged me to continue driving the vehicle despite the active check engine light and recall, and all have refused to provide a loaner vehicle. I have also contacted GMC Corporate directly for intervention. Instead of providing a loaner or expediting repairs, they have only offered post-repair rental reimbursement (up to $44/day after a...
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Engine
06/07/2026
We're in the waiting period for our 3rd engine. 1st engine failure, while driving on interstate at 70+ MPH, engine stopped running, causing a very unsafe condition for family and surrounding vehicles. Engine failure 2 days later, towed to dealership for inspection, replacement engine was installed ~4 weeks later. 2nd engine failure, while driving on interstate at 75+ MPH, engine seemed underpowered and would rev upwards of 6000+RPMs, not exactly unsafe, but not usual operating conditions either. Returned to dealer, upon inspection, total engine replacement was recommended.
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Electrical System
07/06/2026
Cameras go black and become inop randomly. Been in shop multiple times for concern. Software updates have been performed, modules replaced, cables, and now it’s back for the same concern.
