Brake Light problems of the 2015 GMC Yukon - part 2

Entire driver's side led brake lights no longer function. Some type of issue with the circuits.

Approximately 6 months after purchasing our 2015 GMC Yukon denali, having only driven under normal driving conditions on highways and surface streets for 15k miles, the passenger side tail / brake light went out. It was taken in for warranty and replaced by the dealer. Approx 6 months later the driver's side tail / brake light did the same thing, and was also replaced by the dealership. Now approximately one year later the rear passenger light is out again and dealer wants $600. 00 to replace the faulty brake light lamp, but can't because they're in such demand based on the defective part, that they are backordered. A quick internet search indicates thousands of people having the same issues.

Rear brake lights stop working intermittently, sometimes one doesn't work, sometimes both are out, sometimes both work. Seems worse in the hot weather. Taken it in multiple time, 1st 2 times couldn't duplicate the outage, 3rd time they said it needed both taillight assemblies replaces for $1200. Then they worked all winter, now not working consistently.

Rear tail/brake light failed after functioning intermittently for a month. GMC dealer replaced the entire assembly with a new gm part at a cost of over $800. GMC dealer explained that despite chronic failures of this particular part, gm refuses to recall. Failure appears to result from a faulty circuit board that cannot be replaced or repaired easily. Intermittent nature of the failure is an unsafe condition, especially at night or in foul weather.

The rear brake lights have issues one side stopped working a few weeks ago and now the other side stopped working they are not cheap to repair and the car is not even got 40,000 miles on it I would expect that they would at least last about 80,000 miles.

Driver side rear brake light stopped working. Dealer wants $800 to replace brake light.

Tl the contact owns a 2015 GMC Yukon denali. While reversing the vehicle, the contact was informed that the brake lights were not illuminating. However, when the vehicle was in drive, the brake lights illuminated. Also, when the contact depressed the brake pedal to slow or stop the vehicle, the brake lights did not illuminate. The contact called coulter Buick GMC phoenix (1202 e camelback rd, phoenix, az 85014, (602) 396-5994) and was informed that there were no recalls. The dealer referred the contact to the manufacturer. The manufacturer was not contacted. The vehicle was not diagnosed or repaired. The failure mileage was 64,000.

2015 GMC Yukon xl driver side led brake light stopped working. Led circuit board is broke. This is a sealed brake light, so there is no fix and has to be replaced.

Left and right brake lights only work intermittently.

Driver's side brake light not working. Apparently a common problem in these year Yukons, and GMC refuses to acknowledge the problem. Repair is exorbitantly expensive, and GMC should pay for the repairs. The vehicle only has 50,000 miles, and has never been in an accident.

The left brake light failed with 57k miles. The right one then failed at 61k miles. The dealer wanted $735 each to fix them, as they claim they need to replace the entire led housing. The dealer is well-aware that this is a common problem, and it would appear based on googling the issue that many others have experienced this failure from gm.

Both brake lights work intermittently. If you tap hard on it they sometimes come back on but don't stay on. I took to GMC dealer where they informed me they've had a dozen Yukon's in recently with the same issue. Dealer indicated issue is faulty circuit board that overheats causing the lights to short out. I'm out of manufacturers warranty. Extended warranty does not cover lights. Dealer charges $800 per light (part only).

Brake lights intermittently do not illuminate.

The rear brake lights of my vehicle went out in July of 2017 both of them within a week, driver and passenger side. I had the whole light panel replaced under the warranty on each of them and now again my passenger-side brake light has gone out. It came back on momentarily in the morning and then went out again. I have researched the issue and found that many people are having the same problem anda friend of mine currently has one out on her 2017 Yukon which she is taking in to get fixed. Speaking with the service advisors at the dealership they informed me that this is a common problem but no recalls have been issued for it. As of today the part is also on backorder and they do not know when they will get the part in. So in the meantime I am without a brake light.

My right brake light was going in and out and then it totally went out. There should be a recall on this issue as plenty of people seem to have the same problem. Led lights should last a lot longer.

Vehicle fails to stop properly at low speeds. Brakes become �hard� and vehicle will roll to a stop. Brake lights appear to have a short and work intermittently.

Left rear brake light fixture (led style) completely failed after 54,000 miles. It's not the leds themselves. Something else in the power supply failed.

Passenger side brake light stopped working.

Led brake lights work sometime and not at all when in the heat of the day. Have had a number of people come to me in parking lots and tell me that the brake lights are not working.

Both rear light assemblies have had issues. Drivers side was first, brake light stopped working. Replaced under warranty. Passenger side brake light and parking light have now stopped working, just out of warranty. Problem comes and goes depending on temperature. I would think this would be considered a safety issue and be the subject of a recall since it is wide spread.

The brake lights work sometimes and then don't, this is a huge issue. If they stop working while driving this could kill me or another driver or someones passenger(s).

Faulty rear brake lights. The right led module failed, and was replaced. Then the left led module failed about a year later. Now the replaced right led module has failed for a second time! each repair is approx $650. 00 for a 'do it myself' repair. These led modules should last for the life of the vehicle and not fail. Widely noted as being a defective design. Gm should redesign and make good on repairs beyond the standard warranty for those of us that are out of pocket.

Both rear brake lights have failed.

My GMC youkon denali has brake lights that are known to dealers to fail. Yet there is not a recall. I looked on the inter net and saw that there has been this problem since 2015 to 2018. Because of a joint that was soldered instead of a wire. I know why when I brought it in for recall that the service man looked at my stop lights.

Rear parking/brake light went out. Dealer says the fix is $800 plus labor to fix.

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!.

I purchased a 2015 GMC Yukon and am the second owner. Last week, my driver's side brake light went out. I noticed it while driving when someone behind me told me it was out. Six months ago, I replaced the passenger side brake light which cost $875 to fix (the entire light assembly must be replaced, not just a bulb). A little research online has proven that this seems to be a common problem for many other GMC Yukon owners. Led lights are supposed to last the lifetime of the vehicle, but it would appear that something about the product is defective. This is simply outrageous and GMC knows that it is a problem.

Within the last year on my 2015 my ac compressor has gone out, radio screen quit working, brake pump/booster faulty, and now rear brake light quit working. All seem to be very common in this year model. My car has less than 70000 miles on it!! gm is either doing a crappy job on their $60000 vehicles or a recall needs to be done.

Rear faulty brake lights both sides. Quoted 1800 to replace. With a quick search for replacement/fix options I found a single individual that has repaired over 2000 of them. There are many more out there. This seems to be an issue with a high percentage of this make and model and gm acknowledged it by replacing the cope the 2 years later but has refused to recall this. It's an absolute safety hazard that seems to be ignored by gm.

Right side /passenger brake lights failed. Dealer says it's a cracked electrical board. They said that they have seen tons of these and it's not under warranty. $1300 dealer repair estimate. This should be a recall issue.

The a/c has quick working. We took it in to get fixed, they could find nothing wrong except low on freon. Replaced and it is gone (has dye in it & no detection where it has gone). I didn't drive this car for 6 mos. Because of this (too hot). I can't afford to fix everything that is going wrong on this car. Same day a/c went out, the heat system went out on the driver's side seat. Just blows cold air! this is ridiculous! the suspension is now slamming hard and super loud (especially when it is cool/cold out). I am glad they are finally fixing the brake issue but really? all this other bs on this expensive car? the day we got back from shop for the a/c, the driver side brake light was out. Omg!! talk about expensive to repair!! 650-800 for just the light assembly through GMC and that is reconditioned parts! why would we put more crap parts in? waited another 2 mos to save money to go to an aftermarket person to fix this. Just waiting on the other side to go out! lights go out all the time, why would you make them where they are not affordable? we baby our car, park away from everyone and yet it is falling apart due to the crappy products that gm used to manufacture it. All these problems happened (except the braking issue and the suspension) when I went to start the car and I noticed it. The suspension is when I am driving and the road can just have a 'wave" in it. If there is any sort of bounce, this car will bottom out and is super loud. The air started 3/28/19 and all has followed. We bought it used with 74k-ish on it. Have only had it since last July, 2018.

Intermittent brake light activation on both left and right. It happens stopped and in motion. Very dangerous! it is a known issue with broken contacts inside a sealed housing. The issue is posted all over the forums but GMC refuses responsibiliy.

Brake light is not working on passenger side. Went to replace bulb and found out that one has to replace the entire taillight ensemble which is $700-800. It is sad that something important to safety like a brake light has to cost that much to replace. I researched and found this tends to be a common problem. So much for led lights--this is also poor engineering!.

Led brake light works intermittently.

Brake lights for passenger rear lamp assembly is not working. This is the second time within 25 months that this has happened. The entire lamp assembly needs to be replaced at a cost of $600+. The vehicle has less than 49,000 miles, and it is no longer covered under warranty. Online forums indicate that this is a common problem with the brake lights in the lamp assemblies. It appears the circuit boards for the led brake lights are breaking.