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Problems with 2015 GMC Yukon ELECTRICAL SYSTEM

On average, the 2015 GMC Yukon starts to “feel” problems with the ELECTRICAL SYSTEM and its various aspects after 227 936 miles.

Recently reported ELECTRICAL SYSTEM problems on 2015 GMC Yukon

Rear taillight does not work. searched online and found that this is a very common issue, gm refuses to fix and tries to charge $800 to replace whole tail light assembly, and they replace with same faulty lights! fix it gmc, ridiculous

Brake lights will intermittently stop working. no consistency to when they stop working or when they start again. major saftey hazard. gmc knows about the problem but are calling it an extended warranty issue, and not fixing vehicles outside their designated time/mileage because they say it is not a safety hazard...' it is!!!

Car was parked in front of our house and combusted in the middle of the night while we were sleeping. car was exploding and engulfed in flames...completely destroyed via fire and the worst damage was in the engine compartment. cause of the fire is unknown although based on research sounds like nhtsa campaign #14v007000 or 14v152000. fire department extinguished the fire and police were on the scene.

Right rear led tail/brake light stopped working. not easily fixable. dealers are aware of the problem and make you pay $700+ a piece for a whole new assembly. the issue appears to be a faulty circuit board inside. this should be something that can be taken apart and fixed easily or gm should replace it for free.

Rear brake light assembly failing to light when brakes applied and there is not a notification to the driver. this is a manufacture flaw with the led light circuit inside the assembly. there is not a light out notification so the driver is not aware the brake light has failed. this is a safety issue and is an well known issue on the 2015-2019 yukon. this is occurring often and gmc is having problems with supplying replacements because the demand is so high from the failure. gmc has also raised the price of the brake light by 30% from $425 to $675 not including labor. i called the dealer and they informed it was a high failing item and was on backorder and not sure when they would get one. driving the vehicle without proper brake lights is a safety concern and not legal so left with little option but to stop driving the yukon.

Rear taillight randomly going on and off. interior light randomly flicker, theft deterrent system often activates, vehicle dash systems randomly reset and most recently vehicle steering wheel locked and car turned off while i was driving with my kids in the car and in a school zone!!!!! this could have been tragic and was very scary!!!!

The most disturbing concern is the fact that i lost my brakes as a result of a known problem that gm has even recognized relating to a faulty vacuum booster pump. i incurred a $500 repair bill despite gm's acknowledgement of the problem and willingness to pay for cars with less than 70000 miles. unfortunately, mine was over the allowable mileage. additionally, i am looking at a $1500 repair bill for a sealed headlight replacement and another $300 bill for a side detection system ( lane departure warning). gm made a poor car that is unsafe and is not properly addressing the problem.

Rear tail lights cut in and out. work on and off and have faulty parts.

Rear tail lamp at brake light work intermittently. it is known that the circuitry connecting the leds break.

Tl* the contact owns a 2015 gmc yukon. the contact stated that there was an intermittent electrical failure that caused the rear tail lights to short out. in addition, on several occasions, other motorists alerted the contact that either one or both tail lights were out. gettel chevrolet buick gmc (1901 tamiami trail, punta gorda, fl 33950, (941) 347-6817) was notified, but could not duplicate the failure. the failure continued intermittently. the contact purchased the vehicle from vision buick gmc (800 panorama trail s, rochester, ny 14625, (585) 200-3905) and they scheduled an appointment for diagnostic testing. the manufacturer had not issued an electrical system recall to provide a permanent remedy. the manufacturer provided a case number and was to follow-up with the dealer and the contact. the approximate failure mileage was 48,000.

Tl* the contact owns a 2015 gmc yukon. the contact stated that the passenger side tail light failed to illuminate. the vehicle was taking to walker buick gmc (1616 macarthur dr, alexandria, la 71301 (318) 542-7481) where the contact was informed that pig tail wiring was corroded and needed to be replaced. the vehicle was not repaired. the manufacturer was made aware of the failure and informed the contact that there was not a recall on the vehicle. the failure mileage was 55,000.

Both led tail light fixtures went out at once, both non functioning. have to replace both fixtures costing over $1400 from a gm dealership.

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

Tail light lighting strip spontaneously malfunctioned and stopped working. vehicle has no light and no brake lighting which could have resulted in auto accident. within a month the headlight has burned out resulting in a blinker malfunction. vehicle was on highway when both lights malfunctioned

Headlights and brake lights quit working

All led lights have went out on right side, as well as break lights. this is a know issue to gmc, and yet they will not correct it. my quote to have it fixed was 2493.00 from local dealership. that is crazy. led lights should last a whole lot longer than this. also condensation is in the front headlight with no holes or cracks. if this happens with house windows, they are replaced by the manufacturer. there are so many complaints, i will also be contacting the better business bureau. gmc knows there is a problem with these models.

Wiring to radiator fan caught on fire. i was driving the car when i smelled smoke. when i pulled over smoke was coming from the hood i opened the hood and there was open flames on the fan wiring wiring.

My taillight stoped working. when i turn my headlights on it wont turn on or when i apply my brakes. i searched the internet(facebook and fourm sites) and found thousand and thousand of people having the same issues. the brake light/running light is not a light bulb like most cars that you can just replace when it goes out. its led.so you have to replace the whole entire light assembly and it was over $800. led are supposed to have a long life before they go out.... this is only a 2015 i mean come on. so i had to drive in the dark and during this rain storm on freeway and regular streets with no brake or running lights which i s extremely dangerous. this is a family vehicle i drive my kids in this car. this cant keep happening. i also read that multiple people said once they bought a new assembly it went out again and stopped working down the road. this is insane.

The rear power locks are inoperative at times- when using the keyless entry and the master switch. owner is having to reach to the back seat to open the back doors with the back door locks to allow passengers (children) out of the vehicle. in an emergency situation, the back seat passengers are not going to be able to get out on their own, or be able to get out quickly with assistance. this also makes the child lock function unusable as the back doors would never open.

Tail lamps would intermittently operate. at times none would work at others some would work. and others all would work. gmc finally addresses this with: n182180270 (special coverage). gmc was aware of this issue on or prior to november 26, 2019. they stated notifications to customers would begin on december 12, 2019. i was notified today 2-12-2020 well after gmc was aware of issues. gmc allows for warranty of 6 years after placed in service or 72,000 miles. since my vehicle had 902 miles at time of purchase my warranty expired at 72,902 miles. had gmc made me aware in december or too after knowing in late nov 2019 i would still have been under warranty for a resolution to fix issues. there willful negligence in failing to notify me hindered their available warranty under special coverage of no use to me to my detriment of several hundred dollars (~$1800 usd).

The taillights will short out and stop working. the true signal works but the brake and running lights stop working. the touchscreen display isn't working on some parts of the screen. for example, i cannot change the time because the toggles to change the numbers up or down will not work.

Both left and right tail lights defective due to internal cracks in the circuit board

Passenger side brake and tail led strip light short and goes out and stops working. will work sometimes when back hatch shuts and jars it or i hit a bump. dealership says light it out and needs replacing. not sure why the light still comes on when jarred. have extended warranty that was supposed to cover all this especially being electrical. seems to be on going problem

The vehicle's tail light assembly on both the drivers and passenger's sides are defective. the solder does not hold and the vehicle's brake lights and running lights fail intermittently. the driver is totally unaware of this major issue that the brake lights are not working. in researching this problem on the internet there are numerous customers of gmc's yukon's and denali's who are experiencing the safety problem. i realized the problem when another motorist almost struck the back of my vehicle because there were not brake lights at all. the vehicle was traveling and both brake lights failed. the signal lights will still work.

2015 yukon passenger led tail light has failed. vehicle is only 3 years old, and in addition to the tail light failure, have had 3 air conditioning system failures to date. i don't know how long the tail light has been inoperable as there was no warning or indicator to notify the driver of a tail light problem. i only discovered this problem while following my wife in another vehicle as she was driving the yukon. looking at the complaints lodged on both issues, i'm beginning to seriously question gm's reliability and willingness to stand behind their vehicle and parts. always thought leds were more reliable, but looking at the number of complaints lodged, my assumptions are apparently wrong. a simple google search on yukon tail light repair also shows a cottage industry in repairing these led tail lights has popped up, which indicates a significant problem with the design and reliability of these tail lights. if these businesses advertise a lifetime warranty on their repairs, why can't gm make the necessary modifications to their tail lights to improve their reliability. any reasonable search shows the magnitude of this issue, so why hasn't there been a recall issued for this problem. with no notification to the driver of the vehicle of a tail light issue, this would seem to me to be a significant safety hazard that could result in accidents and or injuries/fatalities from one or both tail light failures. if leds are less reliable than the older incandescent bulbs, then go back to the older style bulbs that a vehicle owner can replace for a few dollars instead of forcing owners to have the dealership replace the tail lights every few years at $600-$750 per instance. very concerning and unsafe. gm needs to address this issue immediately.

Had right brake light replaced in warranty. the left rear is now out. this is a driving safety issue fm should be responsible for

When using steering to turn around, turn into a parking space or back in, 'parking assist off' show up on the instrument panel, then the steering wheels locks and the car turns off while still engaged in drive. sometimes 'brake assist' comes on first. extremely dangerous. when this happens, unable to turn steering wheel. car shuts down and doors lock. i have to put it in park and restart the car. sometimes it does it more than once after restarting the car. i have taken it to a gmc dealer for evaluation and repair. has happened at least 6 different times. when driving, i am always afraid to make sharp turns. however, it has only happened at slow speeds when trying to turn in to a driveway or turn around such as in a parking lot. *dt consumer stated after taking my car to gmc dealer and being told my vehicle needed a sortware update, my car went a few weeks without an episode until this evening at 7:52pm eastern time, while backing in to my driveway. the steering wheel kicked in place and the vehicle turned off and doors locked, leaving me out in the street, unable to control my car for seconds. updated 10/18/18*jb updated 10/26/18*jb

We own a 2015 gmc yukon with only 51,000 miles on it. the rear taillights are both intermittent. sometimes they work, sometimes they don't. i recently took the vehicle into the dealership for service and they said replacement of the entire light was the only way to fix the issue. they acknowledged that this is a known issue and that they have serviced many vehicles with the same issue. the service person advised that there is a circuit that over time breaks and the connection becomes loose. when the metal touches and a complete circuit is made, the light will turn on. when it doesn't touch (faulty), the taillight and brake lights will not illuminate. this is a major safety hazard. a simple internet search shows that this issue is very common and gm doesn't appear to be doing anything to address it. because it involves the brake lights, this is very concerning. not to mention, that a replacement is $800. i have already spent $800 for one side, now the other side is out as well. i feel that this should be a recall issue since it's an obvious safety issue that is caused by faulty parts. here is just one of the links that describe this issue in detail: https://www.cargurus.com/cars/discussion-t53845_ds768963

The right rear brake light and running light has gone out. appears to be a common problem. you can't replace the bulb like older cars. you need to replace the whole brake assembly for $700!!! gm knows about the common issue but is not covering it.

Tl* the contact owns a 2015 gmc yukon. while driving 65 mph, the brake pedal was depressed, but the brake lights, tail lights, and the interior rear brake light flickered. the vehicle was taken to delano chevrolet buick gmc (600 1st ave, delano, ca 93215, 661-735-4974) to be diagnosed and repaired. the diagnosis results were unavailable. the manufacturer was not notified of the failure. the failure mileage was approximately 92,000.

I have had an on-going issue with the steering, electrical and power steering and stability control. i have had repeated issues with the stability control turning off, sudden drop in electrical power, the steering wheel gets violently yanked out of your hands and sometime the car completely cuts off. fortunately most have been at slow speeds or else the car would have flipped. it is the exact same issue other models have been recalled for but my vin is not included in that recall. i am afraid of this issue killing me or my loved ones should it happen at speed or leave us stuck in front of on coming traffic. according to my dealer this is an issue the manufacture has know about for a while. *tr

Tail light malfunction intermittently. the tail lights and brake lights occasionally will go out and come back on randomly. gmc knows about the issue and replacements cost about $750 per unit which even these replacements have been known to fail within a year. the fact that this happens randomly and so intermittently this becomes a safety issue. i've had it in the shop and they said nothing was wrong because they were both working. i get home and they are not. is there a way to have gmc replace these via a safety recall?

Rear tail light not working

Brake lights tail lights quit working

The rear taillight works intermittently. i have reported it to the dealership and the only fix is to replace the housing unit at $1500. it has been reported and is a known problem with gmc.

Both brake lights failed within weeks of each other - around 60k miles. faulty led circuit boards. light assemblies are not repairable by dealership. new assembly over $500 each. gm takes no responsibility in resolving the issue. unacceptable! no more gms for my family! .. and that includes chevy.

Tail light led stopped working. connection failed

The rear right tail light don't work properly has an intermittent problem sometimes work sometime don't. dealer told me can't be cover under warranty, because was expired. i'm afraid may both tail light stop working and get rear ended. gmc should do something, because is they problems i saw on those suv

I was driving down the road and someone clearly (due to the loud screeching of the tires) almost rear ended me. thankfully they were able to stop just before hitting my vehicle. he caught me at a stop light and informed me that both of my brake lights were out unbeknownst to me. i have since taken the vehicle to the dealership, but there is an issue with the brake light system/parts for this vehicle. the brake light will work sporadically (without any knowledge of an issue). the manufacturer had to have known there was an issue with this part due to the owner's manual even stating "contact gmc dealership" without giving any troubleshooting advise on the light. the part is ~$650 to replace, both of my brake/tail lights have gone out within a 3 week period of each other and the dealership didn't seem surprised at all of this issue.

There seems to be a problem with the tail light assemblies on the yukon product. the tail light will stop working and it will not give a warning that it has gone out. the assembly is $600 to replace and we have had to replace both. i am worried that they will fail again and i will be forced to replace them again. i have been watching other vehicles like mine and have noticed that other vehicles suffer the same problem. in small talk with the dealer, the service advisors acknowledged that it is a problem and even mentioned another model that had lights that were even more expensive.

Tail light has been flickering for months and now is out. gmc will not fix because i am 4 months out of warranty. i only have 18,000 miles on my yukon.

Rear led taillights intermittently fail due to weak circuit bridge design

Both brake lights went out. dealer said had to replace entire fixture. not covered under bumper to bumper extended warranty purchased. safety hazard that many other 2015 yukon owners have experienced. trim/seal appliqus around door windows also coming off and also not co weed under b2b warranty. shottily made vehicle.

Defective tail lights and headlights.

Tl* the contact owns a 2015 gmc yukon. the contact stated that the vent control function suddenly failed to work, which prevented the air conditioning and heat from working. the dealer (sunrise buick gmc chevrolet at collierville, 4605 s houston levee rd, collierville, tn 38017, (888) 484-2878) inspected the vehicle and stated that the condenser failed and the part was on a national backorder. the dealer stated that the condenser was engineered incorrectly and shook and rattled, which caused a crack that split the condenser. the contact stated that the manufacturer only provided a warranty extension from 36,000 to 60,000 miles, but had not issued a recall to provide a remedy. the contact corresponded with the manufacturer by email and phone and was informed that they would provide a follow-up response. the contact had been waiting for a response for months. the approximate failure mileage was 70,000.

Tl* the contact owns a 2015 gmc yukon. the contact stated that while reversing, the vehicle stalled without warning on two separate occasions. the vehicle was taken to the dealer for diagnostic testing on six separate occasions. the cause of the failure could not be determined. on another occasion, the contact was reversing and the vehicle stalled causing the contact to crash into a vehicle parked near the rear of the vehicle. the manufacturer was made aware of the failure. the failure mileage was 9,000. updated 11/18/15*lj the consumer stated the vehicle also had numerous other electrical issues. some of the issues caused the vehicle to shut down or reverse. updated 1/12/2016 *js updated 01/29/16.*jb

Our 2015 yukon xl denali has been in for repair service for 41 days since purchased new 3/23/15. the car has stalled while in motion with my wife and three daughters in the vehicle twice and been unresponsive to throttle input 3 additional times. the stall occurred once while turning left across traffic and another time while turning right and merging with traffic! the problem is intermittent and gmc has never been able to replicate it. they have given us the shoulder shrug, "i don't know what to tell you, we can't replicate it" line, so here are your keys. no warning indicators, no signs it may happen, and no way to pull up the issue with their diagnostics...huge safety concern and each time they have handed us the keys back after 7 days (their standard allotted time to have a loaner out) without any proactive escalation to find root cause or concern for my family's safety. the last time we took it in, they had it for 8 days and could not replicate the issue. we signed our service paperwork and i escalated to the service manager before leaving. after telling him we would be pursuing buyback, he miraculously had an idea it may be related to a wiring harness issue. this was based off his experience with a sierra pickup (5.3l, not our 6.2l) that had similar behavior. we left the vehicle and, wouldn't you know it, they replaced a wire and "have reasonable confidence" it resolved the issue. two weeks later, it's back in the shop for key fob not detected (after already driving). truck is in gear and you cannot move...another huge safety concern. it's a dud. we have also had to have all 8 injectors replaced due to rough idling and the steering gear replaced from faulty manufacturing that creates a clicking while turning the wheel, the car is at the dealer and we will not be taking it back. we are going through the offical buy-back process with gmc.

Tl* the contact owns a 2015 gmc yukon. while driving 35 mph, all the warning lights illuminated and the four wheel drive low independently activated. the vehicle was towed to a dealer. the technician diagnosed that the body control module needed to be repaired. the vehicle was repaired; however, the failure recurred. the vehicle was taken back to the dealer. the technician diagnosed that the body control module needed to be replaced. the vehicle was not repaired. the manufacturer was notified of the failure. the failure mileage was 5,000. the vin was unavailable.

Door latch in the locked position while door is open. car computer thought the door was closed and door was open. happened two times in one day. very serious problem is driver is allowed to drive with children in the back seat with no warning that the door did not close. *tr

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