Which parts fail
Components named in complaints (headlights, tail lights, turn signals, interior lights).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 GMC Yukon owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 GMC Yukon. The contact stated that while depressing the brake pedal, added pressure was needed before the vehicle came to a stop. The contact stated that the vehicle hesitated or jumped before coming to a stop. Additionally, the contact stated the transmission was slipping. The contact stated that while driving at various speeds, the vehicle stalled before self-correcting. The contact also stated that while idling at a stop light and attempting to accelerate, the vehicle hesitated, but gradually accelerated as needed. The contact stated that the rear taillight intermittently failed to illuminate. The contact stated that the check engine warning light was illuminated. The transmission fluid was flushed; however, the failure recurred. …
My vehicle is currently in the shop getting the motor worked on for a bad lifter. From the information the mechanic provided me this is a common issue with the vehicles that have the Active Fuel Management system. They are seeing many of these vehicles have to come in and have very expensive repairs. My first quote I received was $16, 000, they told me I needed a whole new motor and this assessment cost me $365 and a rental car while they looked at the truck. Now it is in the shop again and the estimate is $6000 to machine the cams as there are metal shavings in my oil. I had to again rent a rental vehicle and have not had my truck for a week. This is the third mechanic that has seen multiple of these motors have to be replaced or repaired due to this issue. I kept up on my oil changes and other recommended car maintenance and so did the owner before me. I had my last oil change approx. …
The taillights started to randomly go in and out. The driver side taillight stopped working but the passenger side taillight still worked. Then a day later the driver side taillight worked, but the passenger side taillight didn't work. The next day we were going to look into this issue, and the driver and passenger side taillights were working, so we halted. We kept an eye on it and they seemed to continue to work for a few days with no issues, so drove it 20 miles to work. When I left work it was dark and I had a coworker check my brake lights before leaving and the running lights and brake lights were indeed working. By the time I arrived at home, I had no running or brake lights. This is and was a danger to others and myself as this could've caused an accident driving and the taillights going out. The truck did not give a warning message that I had no taillights.
Both my tail lights have failed. Dealer wants insane amount of money for new ones, so I opened up the lights and there is an obvious design flaw in the lights, to me it seems intentional at worst, incompetent at best. I am an electrical engineer, and there is no reason they should put a friction connection in the LED power bar, it is a glaring design flaw. Also having steering assist issue at low speed which was an issue that was supposed to be fixed in a previous recall service, but it is still malfunctioning.
Steering locks up at lower speeds or when turning into a parking lot all the ligths shut off at the same time the steering does it has happened more at night lights flicker both interior lights and exterior lights a/c shuts off radio shuts off i have went to different dealers and have not been able to fix this problem even doh i show them videos of what it does both my wife and i have almost had a few accidents because of this
There was recall for N182180270 Tail Lamps Inoperative, for some reason my vehicle being a 2015 was not included. This issue is ongoing with my 2015 Yukon Denali and is dangerous while operating, it recently started and is intermittent. Also my vehicle has issues with hard shifting and jerking intermittently when taking off.... also a known issue for this year and make/ model of vehicle
Both tail lights fail. I just bought this vehicle at Ewald Automotive in Oconmowoc Wi a month ago with 100k and I know they were aware of the problem and so is GMC. I am not paying 900 bucks for each tail light. They are absolute junk. The left side someone already messed with it because there is electrical tape on it. Ewald laughed in my face.
My taillight has blown and I read online that several other vehicles like mines had this problem. The bulb itself can not be replaced. The whole LED box need to be replaced and one side onlybis roughly $800. Being a single mom of 3 boys, how can I afford that? I need my car inspected but with this issue I dnt know what to do. Please help.
Right brake light and tail light quit working for a few days, then returned to normal operation, both worked fine for a week then the left side went out and also returns for a few days. Now both are out except for one led per side per cluster. No brake lights except for the one over the gate. And turn signals work as they should.
Tail Lights don't work. Have seen several complaints about this problem. There is currently a lawsuit concerning this. GMC will only cover replacement if car has less than 72,000 miles. The replacement lights cost about $800 each. Having it looked at now. Fear that I will have to pay replacement costs.
Headlight complaints in other Yukon years
Frequently asked questions
How common are headlight problems on the 2015 GMC Yukon?
NHTSA has 308 complaints about the lights of the 2015 GMC Yukon, 51% of the model year's 602 complaints. The component named most often is brake lights (8 mentions).
Is there a recall for 2015 GMC Yukon headlight problems?
No. NHTSA lists no lights recall for the 2015 GMC Yukon, though it has 10 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 GMC Yukon headlight problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 7% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.