2015 GMC Yukon owner complaints

On two separate occasions when parking, and driving at a high rate of soeedv( 60 MPH)on interstate in sudden stop and go traffic brakes failed to engage after working properly before and again after with more than a month between incidents . The second incident occurred on 12/31/18 after the vehicle had been in for routine oil change and service that included a multi point inspection at the GMC dealership where it was purchased brand new. The vehicle is frequently serviced as required and has tires with good tread . The failure is alarming as it often comes when trying to make a necessary stop and the failure comes out of the blue then returns to normal. This occurrence should be addressed by the manufacturer and should be taken very seriously since the matter is literally a matter of life

Last week, the power brake assist began fading away intermittently at low speeds, and caught my wife off guard in a grocery store parking lot when she pulled into a parking space and the brakes were not available. She had to plant both feet on the brake pedal in a panic stop before crashing into the car parked in front of her, and has since never driven the vehicle. This is a danger, and is potentially life threatening.

Tl* the contact owns a 2015 GMC yukon. While at a drive thru with the brake pedal depressed to the floorboard, the brakes failed. The contact had to apply excessive force in order for the vehicle to stop. There were no warning indicators illuminated. The vehicle was taken to starling Chevrolet Buick GMC (1001 e irlo bronson memorial hwy, st cloud, fl 34769, phone: (407) 892-5144), but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was notified and stated that the failure had to be duplicated. The approximate failure mileage was 42,000. The VIN was not available.

Power brakes failing at low speeds-in freeway traffic-pulling into driveway requires strong pressing on brake pedal as if the brakes are intermittently loosing power assist

At slow speed in stop and go traffic the brakes will work one time and the next time I would have to stomp the brake pedal to get the SUV to stop it was on a street when it happened I have tried to contact flow GMC of winston-salem multiple times and can't get anyone to talk to me

Earlier this year I purchased a 2015 GMC yukon denali. After driving it a short amount of time I realized the brake pedal is located significantly higher than the gas pedal. I've come to realize that the ~4inch gap is causing a severe safety hazard, especially in emergency braking situations. My foot, along with others in the post linked below, often gets caught in the large gap between the gas and the brake, especially when moving quickly. There have been many instances to date where the sole of my shoes has gotten stuck under the brake pedal, preventing me from stopping in time. I've narrowly avoided at least 5 accidents, because of this. Fearing that it is a matter of time before it results in a collision I reached out to GMC to see if there was a fix. They responded and said that t

Trailer braking system warning is incessantly going off, without cause. Extremely distracting. No way to stop it. Truck has never even towed / trailored anything. Has happened multiple times over the last 6 months. Today occurred 26 times during driving

Driver side rear brake light working intermittently, approx. 10% of the time. Called dealership and said it is known issue with most denali brake lights. Was quoted to replace entire assembly $900. Each side for this known safety issue. This is a serious safety issue and known by GMC with no recalls available.

Passenger side tail light stops working occasionally. This affect's the brake light and night driving. It has stopped working up to a week at a time, but then starts working again. It might be weather related.

Tail lights work inconsistently, dealership tells me it's common problem with my year and model.

We were stopped at a red light today by someone telling us our tail light was blinking and going out. Our vehicle only has 65000 miles! I would think a LED light should not go out yet. My vehicle sits under a carport when not in use. I have seen numerous complaints online for this same problem for same year model

Both tail lights fail. I just bought this vehicle at Ewald Automotive in Oconmowoc Wi a month ago with 100k and I know they were aware of the problem and so is GMC. I am not paying 900 bucks for each tail light. They are absolute junk. The left side someone already messed with it because there is electrical tape on it. Ewald laughed in my face.

Left rear tail light quit working, I was able to break the cover off and soldered the LED mounting strip,. Right side quit working so I broke the cover off but this time it was severely damaged. Soldered it. Left side quit working again so I replaced both sides with aftermarket units. Date below is just to fill the space. It was after warranty expired and over about 6 months time.

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.

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.

Transmission failure at 167,000 miles. Transmission failed during a 100 mile trip initially slipping and eventually would not engage. Vehicle traveled on I 26 and could have resulted in accident on this 80 mph interstate. This vehicle is typically driven by my wife. No warning and GM Onstar provided vehicle diagnostic check in days prior to failure with no issues. Technician advised this was the 3rd vehicle this month in his shop with 6L80e transmission failure and said they normally fail around 150,000 miles. This is a known failure on numerous general motors vehicles across the product line. Repair required replacement of 6l80e transmission with a factory rebuilt transmission. Cost $4,100.

My vehicle started out with a rumble and driving rough. Then it started jumping out of gear. Took it to Transmission shop and they said the have had a lot of SUV’s of the same model with the same problem. It was the transmission. Had it fixed, with a hefty price of 4,900 dollars.

Crack developed at edge of windshield at deicer strip. No apparrent cause such as rock damage. GMC will not cover this repair under warranty. My wife's 2015 Subaru outback received a warranty extension notice for this very defect stating that "during the mfg process certain compounds used to adhere the deicer to the windshield created a condition where the glass became more susceptible to cracking following a minor wound." I'm quite certain this defect is the problem with my yukon. Is it possible that Subaru and GMC windshields are provided by the same sub-contractor?

I was driving down the highway and out of no where I hear this loud kaboom! I ducked thinking something just hit me and pull over but here glass tinkling around. I automatically know it is my sunroof so I get out and look and my sunroof exploded. (Looked like it was pushed up.) Luckily I had the inside part shut or I and my passenger would have been covered in glass.

Tl* the contact owns a 2015 GMC yukon equipped with continental crosscontact lx20 tires, size: p275/55r20 111s. After the contact received a safety recall notice for NHTSA campaign number: 16t016000 (tires), the contact inspected the tires and found excessive tread wear, vibrations, and noise from one of the tires. The vehicle was taken to the dealer where it was determined that the vehicle was excluded from NHTSA campaign number: 16t016000 (tires). The manufacturer was not notified of the failure. The vehicle and tire failure mileage was 38,000.