Both rear tail light assemblies went bad. The left one in April of 2019 and the right one in January of 2021. Service advisors in the 2 dealerships I deal with claim the do not know anything about it. Yet a number of repair shops on the internet know of this problem in 2015 to 2019 Yukon's because they repair them. Funny that GM does not. I sent the 1st one out and it was repaired for well under the cost of a new one. I complained again to the service advisor about this one to no avail. Going to send it out for repair as well. Incidentally they cover the repair with a lifetime warranty.

- North Huntingdon, PA, USA

Both rear tail lights are inoperable and the dealer wants over $800 to replace. I'm over the mileage limit for the recall so I'm out of luck.

- Cypress, TX, USA

THE BACK PASSENGER BRAKE LIGHT HAS BEEN FUNCTIONING INTERMITTENTLY FOR THE PAST 15 MONTHS. WE HAVE BEEN STOPPED BY OTHER VEHICLES LETTING US KNOW 'YOUR TAILIGHT IS OUT' BUT WHEN WE GET HOME TO LOOK AT IT, THE LIGHT IS FUNCTIONING JUST FINE. AFTER MULTIPLE OCCURRENCES BEING TOLD THE SAME THING, WE TOOK THE YUKON INTO THE DEALER TO HAVE IT CHECKED. THE DEALER LET US KNOW THAT THIS IS A KNOWN ISSUE WITH THIS DESIGN, AND THAT THERE IS A RECALL/WARRANTY FOR THIS ISSUE. HOWEVER - OUR YUKON HAD 76,000 MILES AT THE TIME WE TOOK IT IN, AND THE RECALL ONLY COVERED VEHICLES LESS THAN 72,000 MILES OR 6YEARS FROM DATE OF SERVICE. NOW - I HAVE READ MANY FORUMS AND SEEN ALL ACROSS THE COUNTRY THAT THIS ISSUE IS OCCURRING DUE TO A POOR DESIGN FROM GM. LIMITING THE RECALL TO A CERTAIN MILEAGE IS [XXX] WHEN YOU KNOW THERE IS A DESIGN FLAW IN THE FIRST PLACE. NOT ONLY IS THIS A SAFETY CONCERN WITH THE TAILLIGHT NOT WORKING, BUT GM IS NOW REFUSING TO REPLACE IT" I EXPECT THIS ITEM TO BE COVERED IN FULL, AS I DON'T SPEND $70K ON A VEHICLE ONLY TO HAVE TO REPLACE DEFECTS ON MY OWN DIME. $1000 FOR A REPLACEMENT TAILLIGHT, ARE YOU KIDDING ME" I WOULD LIKE OUR TAILLIGHT REPLACED AT NO COST DUE TO POOR DESIGN AND A MANUFACTURER'S DEFECT - BOTH OF WHICH ARE NO FAULT OF THE USE AND OWNERSHIP OF MY YUKON. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Eaton, CO, USA

So my brake light on rear all have gone out due to bad led lights or some known component goes bad. #2. fuel pump is bad. #3 radiator has a crack in it. This is a 2015 Yukon

- Wausau, WI, USA

Driver tail light works inconsistently

- Houston, TX, USA

Passenger rear brake lights quit working. Appears to be a defect in the design that causes a break in the circuit on the light assembly. Repair can be manually down by cutting through plastic of assembly and soldering break, or replacement of entire light assembly. No accidents - just normal driving.

- Warren, MI, USA

My passenger brake lights stopped working. Apparently the only way to fix is to buy a whole new unit which costs $300-$500.

- Okemos, MI, USA

Rear tail lamps both sides are out

- Bismarck, AR, USA

Tail lights go out. I have read multiple posts about this issue, but yet there is no safety recall issued for this. It is very expensive to replace the lights and I am afraid if I do, the same issue will exist.

- Topeka, KS, USA

Having issues with the tail lights ever since I got the vehicle. First it was one light completely out. Then it worked for awhile, and now both lights are intermittently working. The side yellow lights work on both but the running lights and the brake lights all dont work almost all of the time. Upon reading up on the internet, many many sites as well as local people with the same vehicle, all state they have the exact same issue with their tail lights. It seems to be a very common issue with the same pieces faulting in all of these Yukon. Doesn't matter if vehicle is stopped or moving they hardly ever work.

- Green River, WY, USA

This 2015 Yukon slt has 2 failed rear taillights and brake lights. There is no indication of this failure in the instrument panel. My wife was advised by text from a friend these lights were out. The replacement assembly is appx $500 per side plus installation. I was advised this is not a warranty item and it is also a common failure on these vehicles. Not sure when the failure occurred. The 3rd raised light was operational when the brakes were used. First noticed around July 10, 2020. I have several cars from 2002 on which warn of a light failure. These led lights were advertised to last for extended periods. This issue is dangerous and uacceptable.

- Moncks Corner, SC, USA

I bought my GMC Yukon in March of 2019 about a week later I had people inform me my brake lights were not working. I would check at night and they would. A few months later I noticed it myself, they would work one minute but not the next. December of 2019 I get a letter from GMC stating they know 2015 model GMC Yukon vehicles may have a condition where the brake lights intermittently do not illuminate. I could have it done if my SUV was not over 72K miles but it was when I bought it. So that doesn't help me and they want $2K to fix it. I called to see what they could do and they told me this wasn't a safety issue. If they do work and someone doesn't see I am braking, my kids or family are in the back seat, how is that not safety related? they need to make this a recall!

- Florahome, FL, USA

Both taillights intermittently stop working.

- Salyersville, KY, USA

Manufacture defective, front driver side headlight assembly has high condensation which continues to get worse. It has caused the light to malfunction and now will not work. I was told by a mechanic that the whole headlight assembly has to be replaced because if not the bulbs will continue to burn out due to the condensation.

- Kenmore, NY, USA

The rear tail light keeps going out. It was already replaced once at my dealership. Now the same light less than 3 years is not functioning. Posing a safety concern as other vehicles would not see me at a complete stop due to my rear passenger light not working. This should be a safety recall. Its a very common this is a manufacturing defect and GMC should have this fixed asap. Tried calling GMC and they said they would not help me with the repair cost of my rear passenger tail light. I stated this was a safety issue and required their attention. To no avail I was denied any assistance. The light itself at my dealership is $800 not including labor. This is my every day family driver car. I have been stopped by cops and given warnings and by other passer by's that my brake light is not functioning safely and appropriately. This needs to be escalated to a safety recall. As there are many threads with other GMC Yukon owners having the same issues. Thank you.

- Jerome, ID, USA

Right rear tail light and brake light stopped working. It is an led light and very expensive. This is a safety concern as lack of a brake light on one side is in violation of legal requirements. Led lights should not quit functioning after 5 years and 85,000 miles.

- Fort Myers, FL, USA

Rear tail light circuit boards breaking and causing brake lights or tail lights to fail or not work.

- Johnstown, CO, USA

The tail lights stop working or they flicker like there's a loose connection or something not making contact I E seen other complaints about the same thing and GM now has a new improved tail light but the old ones all fail all stop working. On the braking system it doesn't brake when going a low speed without giving it gas I have to pump N push the brakes all the way down or give it a lil gas to be able to stop or brake the lights flicker or stop working while driving stop all the time the dealer wants 1500-2000 to replace em the lights.. they are defective and should be recalled their bad workmanship shouldn't be mine our anybody else that has this vehicle burden this is not a cheap vehicle I paid over $50,000 used for about a year.. I need your help. The brakes need to be fixed also because at low speeds with no gas on the pedal I can roll into something hit something or someone.

- Signal Hill, CA, USA

Rear brake lights work intermittently. When taken to the dealer they say they can't find the problem. It is a safety issue and a common issue among these cars. It is horrible that GM will not fix this problem for free.

- St Louis, MO, USA

In March 2019 passenger side tail light started working intermittently- took it to the dealer and had it replaced ($800) one year later (May 2020) driver side tail light stopped working completely.

- Pottstown, PA, USA