The rear driver side taillight does not work. Took it to the dealership and they said it was a problem they saw frequently, to just hit the light and it might start working. Otherwise it was a 800 dollar light to replace....if it is a frequent problem gmc should be fixing it... Are they going to pay for a ticket if I get pulled over or worse someone crashes into me? The problem comes and goes but has seemed to get worse and is not safe or legal to drive with the light how it is. Bad design of the light. And from what I have seen online I am not the only one. There a whole forums that people have the same issue.
2015 GMC Yukon Denali lights complaints
Page 2 of 2: complaints 11 to 39 of 39, newest first, as owners wrote them.
Passenger side rear tail light/ brake light inoperable. Problem occurred at 44,580 miles.
Led brake light works intermittently.
The passenger side tail light is intermittent the dealer said that it would cost $875.00 for the part to fix. He said that it was a bad manufacturing job. And he also said that there were a lot of SUV's coming in with the same problem. Thank you
Rear drive side break light is out because of poor construction.
Led tail light and brake light stopped working at approx. 50,000 miles.
Faulty back tail lights. The entire assembly fails with the back brake lights being out due to faulty soldiering and part. Major safety hazard. Gm will not replace.
The tail lights are faulty. This is the second time I've had an LED tail light go out. Sections of the lights come on and off. One tail light assembly has been replaced already. They also get condensation on the interior of the assembly. This appears to be a common theme for a tail lights on gm SUV's from 2015-2018. These lights can be purchased for anywhere between $400. To $900 range for just one! They are on a vehicle which has a base price of over $50k and last less than two years! Come on!
Rear LED brake lights only work intermittently.
Rear LED tail lights stop working due to cracked bridge on circuit board of light assembly.....non serviceable new tail light is $600-$700. Possible collision hazard!
My right rear taillight stopped working, including the brake light. I took it to the dealership and was told it is a burned out taillight and has to be replaced. The cost was $800. I was under the impression that these taillights are LED and last forever. In reading online, it looks like this is an ongoing problem with these gmc/chevy taillights where the circuit board breaks and the light stops working.
Brake lights working inconsistently,
Brake lights went out on both sides. All other lights in unit are functioning fine. Gmc is requiring me to buy the entire light which is $750 each just to fix the brake light. Both lights went out at the same time. Has to be an issue with the light
Takata recall. Issues with both brake lights going out.
Right tail light isn't working. Just bought the car.
Tl* the contact owns a 2015 gmc yukon denali. The contact stated that the brake lights failed to illuminate. The brake light was replaced by the contact but failed again a few days later. The vehicle was taken to capitol buick gmc (408‑335‑7526, 909 capitol expressway auto mall, san jose, ca 95136) and the contact was told that the tail lights and the brake lights needed to be replaced. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 45,000.
Rear tail light not working
Drivers and passenger brake light go out intermittently. Passenger stays off for long periods of time. Looked into replacing no idea if it will fix the problem. Cost at least $500. Each parts only. I have seen so many other vehicles like mine same problem. Headlights also going out, water inside of cover. Led and turn signal went out on drivers side replaced for a cost of $900.00, (just for the headlight) again no guarantee it will keep working. Also battery went dead replaced battery. New battery also went dead. Car alarm went off the night before battery dead in the morning. Has been in the shop 3 weeks now. Same thing happens alarm goes off kills battery. Shows massive drain and set about 32 codes. The drain doesn't register after that. Recharge battery car is not running when this happens. Problem repeats every time after charging the battery. Something in the wiring is shorting out. Tested both batteries they both test good. Afraid of what will happen next with the electrical on the vehicle. Not sure if the lights have anything to do with this or not. When ordering headlight and asking about brakes told by dealer parts they sure are selling a bunch of these. I have had people driving down the road stop me to tell me my brake light is out. I did not know that the turn signal on the front was not working until a car pulled out in front of me while waiting to make a left turn. I got out and looked at the light and it was not working. I cannot drive the vehicle at all because it keeps draining the battery. I have a ase certified master technician working on the vehicle in a reputable shop.
2015 gmc yukon denali, break light malfunction, driving, parked with no indication when it will work or not. Dealership and gmc service center claimed there were no or very few complaints however I have found hundreds already. They refused to even look at the light stating I can get it replaced for around $775 because they cannot change bulbs on that type of tail light. Dealership told me that this was new feature starting with my year model and since gmc went with encased LED lights they no longer can fix them under warranty. This was never disclosed anywhere and gmc does not state that anywhere I could find and will not cover it under factory warranty even though it is obviously a wiring issue since the light does work sometimes. I also had proof with pictures that the tail light does work sometimes but not constantly and the dealer referred me to gmc service center. The gmc service center basically explained the same thing, that they have no record of complaints and those would not be covered because the light is actually broke or out, and that is not covered. They actually suggested I go back to the purchasing dealership which is the one that sent me to them, just got the go around with no action. This is a serious safety issue if the lights stop working suddenly, especially at night because the whole light goes black. Now I cannot get my vehicle registered due to the light and will need to fix or replace a factory issue with the light just to get my vehicle inspected and registered.
I give!!! Now break lights not working!!! Right break light is out and left driver is intermittent. Vehicle has 37k on it and was just picked up from the dealer after having 1 of many issues through the past year rectified and now this! This is a significant safety hazard and could tremendously injure someone. Right now my car cannot even pass inspection due to the faulty equipment installed by the manufacture that is a danger to my safety. I have owned many gmc's (6 total) through the years and this being the worst!! The latest, I have had the torque converter replaced in aug 18 - due to shuddering and vibration. Then the steering column replaced due to popping , back hatch hinge replaced due to popping and malfunction, back glass door rubber gasket replaced due to leaking, sharkfin antenna replaced due to leaking, sunroof gasket replaced due to leaking, new tires at 500 miles due to excessive vibration. Back door adjusted due to slamming, and additional slight issues. The radio has a constant glitch on the screen since day one that after being taken in numerous times, of course the dealer cannot replicate the problem and keeps performing a flash update which never helps and as soon as I drive off it glitches again. I have contacted gm regarding the brake lights, radio, and now my passenger step is malfunctioning not to mention a recall was just released on the power steering. Will the repairs ever end? Guess once I trade it in on another manufacture as this will most likely be the last gmc I will ever purchase!! I do not have time to live my life at the dealer for a high end purchase that is the worst mistake ever!! Not to mention being a safety hazard!!!
Passenger side rear brake light and tail light stopped working. This cannot be fixed with a simple bulb. This is an integrated LED requiring the entire tail light assembly to be replaced at the owners expense. Dealer estimate was $800 after installing.
Brake lights have failed. I appears to be due to a faulty solider on the LED assembly. Both brake lights have now failed. The fault is constant and has no relationship to status of the operation of the vehicle or road conditions. Consumer can not repair the fault due to the design of the tail light assembly. The vehicle owner and other drivers are being endangered by this issue that is obviously a quality issue with the product.
Both passenger and drivers side brake lamps, turn signals and running lamps short out and stop working. When vehicle is under warranty, lamps are replaced with new units, that are also faulty and eventually fail, in anywhere from 1 week to 1 year. Gm is well aware of this widespread, nationwide problem, yet refuses to issue a recall, and charges $1500+ the replace the units with new oem, that are still faulty.
Tl* the contact owns a 2015 gmc yukon denali. The contact stated that the rear passenger side tail light shorted out without warning. The dealer (liberty gmc, 8660 w bell rd, peoria, az 85382, (602) 730-7652) diagnosed that there was a short in the circuit board, which impacted the rear exterior lighting and needed replacement. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was not available.
Rear black lights fail... Known issue... Only fix is $750... Gmc knows it is an issue and hasn't done a recall... Most cars your tail light goes out $10 to fix... Gmc $750
Driver's side LED brake lights intermittently working, then completely failed.
Tl* the contact owns a 2015 gmc yukon denali. The contact stated that the brake and tail lights failed to illuminate sporadically. The vehicle was taken to weld county garage buick gmc (2699 47th ave, greeley, co 80634, (970) 352-1313) where it was diagnosed that the brake lights needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 83,081.
Rear LED (break light) does not work turn signal, backup works. Cost is over $500 to replace this is outrageous extended warranty does not cover light bulbs now I know why this should be a factory defect.
Headlights do not illuminate the road far enough to allow safe driving. Took vehicle to local dealer and they checked the lights and said they meet manufactures specification. When driving on country road with no other illumination the headlights do not project far enough to see what is ahead. Driving at posted speeds 55 to 60 MPH cannot see what is coming up. Have to use high beam in order to see far enough to be safe. Did an online search and found that this is a common complaint for this model year.
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