The passenger side blind spot monitoring sensor not working because the sensor came detached from rear bumper for no apparent reason and now is just dangling. Needs to be welded back on the bumper.

- Highland Village, TX, USA

Driver side tail light went out, when you pull the light out it starts to work, replace the light back into the car and it dies again. This seem to be a issues with a lot of people. Its very costly to have to keep replacing led tail lights!

- Buxton, ME, USA

2016 Yukon denali, both brake lights malfunction with on 78K miles. I can't afford new brake lights as they are manufacturer only and $800 a pop. I purchased the extended warranty to cover any of these expenses at another 3K, and the dealer tells me headlights, tail-lights are not covered. I should have researched better, or would not have bought a vehicle with any led lights.

- Pass Christian, MS, USA

After refueling my Yukon, pulling out into traffic, the Yukon's RPM gage started jumping up and upon accelerating, the Yukon would not move. I was able to put the Yukon in 'm' gear and slowly drive another mile before I was unable to drive the Yukon at all. Vehicle had to be towed.

- San Antonio, TX, USA

Rear passenger side red led light doesn't work. Have to replace the whole light assembly which is a lot of money.

- Delaware City, DE, USA

Both rear tail lights are out. The replacement for these are over $800 and GM has know about this for years. Please help, as I cannot get my car inspected with the lights being out.

- Morgan City, LA, USA

Passenger side brake light does not work. This is a known issue with GM. There is poor manufacturing which has caused this chronic failure. Can not replace the bulb, you must replace the entire light assembly.

- Collierville, TN, USA

Brake light taillights intermittent turns on and off

- Pensacola, FL, USA

Brake lights stopped working almost was plowed into by 18 wheeler on I-75. Driver waved us over and informed us that he did not see us till right on top of us. Problem appears to be systemic enough that the GMC service department told us that it was common enough that they kept the brake lights in stock. Additionally there are numerous threads about this issue on the internet and even utube videos on where to remove material to access the offending circuit board to repair the known faulty circuit. The failure of these brake lights could have cost my family and me our lives. The dealership wanted to charge 1600$ to replace the brake lights. I reiterate the brake light failure is common enough that there are numerous threads on the internet to discuss the known weakness of the circuit board

- Bull Shoals, AR, USA

My complaint relates to a known defect in 2015-18 GMC Yukon (and similar GM models) and defective brake lights. The left brake light in my 2016 GMC Yukon went out in approx early 2019. It was repaired under warranty. In November 2019, by right brake light went out. It was the same problem as the early broken light. I had less than 36,000 miles on the vehicle. I leased the vehicle in approx Sept 2016 and the dealer claimed that the vehicle was past (less than 75 days) expiration of the 36 month warranty. So, the dealer quoted me $950+/- dollars to replace the entire housing. The dealer rep explained that the entire housing had to be replaced because it was led and didn't use a bulb. The dealer rep told me this is a common problem. I was incensed and refused to pay. I went home and googled the problem and found out that this is pervasive with the 2015-18 Yukon and other similar GM products. I also found a fix that was much less money only required about 2 hours of my time. This is a safety defect and, based on the dealer rep comment and google research, it is a well known problem. For example: Https://www.cargurus.com/cars/discussion-T53845_ds768963 NHTSA id number: 11291414 NHTSA id number: 11299968 NHTSA id number: 11297087 NHTSA id number: 11291113 NHTSA id number: 11286914 NHTSA id number: 11282957 NHTSA id number: 11282130 NHTSA id number: 11282097 NHTSA id number: 11278307 NHTSA id number: 11265307 NHTSA id number: 11265384 NHTSA id number: 11256174 NHTSA id number: 11254155 NHTSA id number: 11253481 NHTSA id number: 11246544 NHTSA id number: 11246035 NHTSA id number: 11241057 there are many others as well. A broken brake light is a safety defect. GM should be forced to recall all of the 2015 - 2019 and replace the brake lenses.

- Las Vegas, NV, USA

Brake light on vehicle works intermittently and is no longer safe. This is a problem GMC is well aware of and no solution in sight. Cheap metal board brakes inside the lens and leaves you with no brake light. I do not want my family to be rear ended because of this professional grade" brake light failure, at any time on road.this is a 2016 GMC Yukon with 22710 miles as I write. Brake light has failed while moving on the city streets. This failure is currently on the passenger side brake light. Trying to make appointment for repair of this professional grade brake light" before the other one brakes and put my family at risk of a accident.

- Phoenix, AZ, USA

The contact owns a 2016 GMC Yukon. The contact noticed water coming from the high frequency antenna, which caused a shortage to the gps and rendered it inoperable. The vehicle was taken to serra Chevrolet Buick GMC of nashville (2340 galatians pike N, madison, tn 37115, (615) 543-5456) where it was diagnosed that the high frequency antenna needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and provided case number: 9-5724166813. The failure mileage was approximately 60,000. The VIN was not available.

- Greenbrier, TN, USA

Left taillight went out and I was under the warranty and the dealer replaced it but had the right taillight go out at 40,000 miles. I have referred 4 friends that purchased the same vehicle as us and have had the same issues. This is a common problem with GMC and they need to recall this.

- Riverside, CA, USA

The contact owns a 2016 GMC Yukon. The contact stated that the passenger side brake light failed to illuminate when the brake pedal was depressed. The vehicle was taken to greiner Buick GMC (14555 civic dr, victorville, ca 92394, (760) 245-3451) where the contact was informed that the tail and brake light assemblies needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 81,000.

- Apple Valley, CA, USA

Tail lights alternating not working. There seems to be some electrical issue with the led tail lights. This is a massive problem and all over the internet. GMC is charging $1000 per tail light to fix despite this being a defect. Many companies and youtube videos popping about a bout this: www.ledfix.com/yukontaillightrepair.html https://www.youtube.com/watch?V=nnldjpymdzc

- Walnut Creek, CA, USA

Brake lights & torque converter 2016 Yukon denali. The brake light is out on the passenger side. I brought it to the dealership, and it is within 2 weeks of the warranty expiring. They had to order the part because there's a national backorder for the assembly. So clearly I'm not the only one. Did some research and this is apparently an ongoing problem. This vehicle has been a hassle from the start. I'm beginning to believe there is an electrical issue as well. I had a battery issue that the dealership couldn't figure out even after showing them the onstar alert. Originally I was told onstar was probably just sending it as a mileage alert. Turns out after I insisted they put the vehicle on a machine and it showed the battery was indeed faulty. Multiple things have gone out on a vehicle with barely 30,000 miles on it. The torque converter is also a major concern because it 'shed' metal pieces with the car having less than 20,000 miles they only drained the transmission fluid because that's what the bulletin told them to do. How is this not going to happen again? my Yukon drove like a lawnmower vibrating and hopping. This is the worst vehicle I've ever purchased, and with the issues that keep piling up it looks like we aren't anywhere near the bottom of the problems.

- Lake Charles, LA, USA

Passenger tail light/breaklight works intermittantly or not at all.

- Sparks, NV, USA

Gps/satellite antenna faulty due to water intrusion

- Fleming Island, FL, USA

Rear brake light led strip is out. Vehicle only has 37K miles on it. Dealership will not repair it but wants to sell a new brake assembly for $750 each. If you tap on the light assembly, it comes on momentary and goes out again.

- Laredo, TX, USA

The rear tail/brake lights on the GMC Yukon series have a defect that keep causing the running lights and brake lights to work intermittently. I had an entire new light installed and the same issue occurred within a few thousand miles. GMC is aware of this problem and has yet to issue a recall for these defective lights. Obviously this is an important safety feature of the vehicle in order to alert other drivers of mere presence, braking, and turning actions.

- Yucaipa, CA, USA