2015 GMC YUKON XL Recalls, Complaints & Safety

Transmission shuttering between 50-65 MPH.

Yes, that case number would be 91762225 (With GM). You are most welcome. Thank you for contacting Chevrolet Customer Assistance and have a nice day! Please don’t hesitate to reach out if you need anything else. VIN1GKS2HKC8FR165487 Special Coverage Adjustment N182180270 Tail Lamps Inoperative Having issues described by NTSA and vehicle has 62,000 miles but falls after the expiration date. I contacted GM and they were very nice but they were unwilling to help in any way. Any help would be appreciated.

The contact owns a 2015 GMC Yukon XL. The contact stated that while driving 70 MPH and exiting the highway, the brake pedal was depressed but the brake pedal was stiff and stuck, requiring that the transmission be shifted to neutral(N), and to stand on the brake pedal with both feet. The contact continuously pumped the brake pedal, but the vehicle slowly responded and almost crashed into other vehicles. There was no warning light illuminated. The contact's wife and daughter were also inside the vehicle during the failure and were frightened and concerned for their safety during the failure. The dealer was contacted and was provided a description of the failure over the phone. The dealer informed the contact that the vacuum pump and an unknown part had possibly failed. The contact was advised that the failure was possibly related to NHTSA Campaign Number: 19V645000 (Service Brakes, Hydraulic); however, the VIN was not included in the recall, and there was no warranty coverage on the vehicle for the failure. Additionally, the check engine warning light was illuminated. The vehicle was not diagnosed or repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 143,000.

While driving back home from my trip the truck all a sudden made a squealing noise and the engine just stopped. I was on the high way . I was able to coast the vehicle off onto the exit ramp. The vehicle was towed home. The following day it was towed to the repair shop. The shop has confirmed engine failure. Will need to replace the engine . Still waiting for warranty approval.

The contact owns a 2015 GMC Yukon XL. The contact stated that when the vehicle was started, the vehicle started shaking with a tapping sound coming from the engine compartment. The contact stated that there were no warning lights illuminated. The contact stated that while driving at an undisclosed speed around the block, the failure persisted. The vehicle was parked at the residence. The vehicle was taken to a dealer, where it was diagnosed and determined that the lifters in the engine were loose, and the lifters and the right side of the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.

The transmission shifts hard in low gears. I have done research, and it seems like this is a common problem that a vast amount of these vehicles have. I honestly think that this is has to be looked into for a recall. There is countless information on the web with videos, other owners, and transmission businesses explaining about it.

The contact owns a 2015 GMC Yukon XL. The contact stated that upon starting the vehicle, the transmission shifted hard from first to second gear while depressing the accelerator pedal. There was no warning light illuminated. The contact stated that while driving 80 MPH, the vehicle independently decelerated while depressing the accelerator pedal, and the vehicle started shaking abnormally. The vehicle was taken to an independent and several internal parts of the transmission were replaced, and the Transmission Control Module (TCM) was also replaced; however, the failure persisted. The vehicle was then taken to a dealer, where the contact was informed that the repairs had not addressed the cause of the failure. The contact was informed that the failure was likely related to the transfer case. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 161,000.

The Active Fuel Management (AFM) system malfunctioned causing not all engine cylinders to fire at critical times, thus causing a safety issue when the vehicle has insufficient power traveling at highway speed. The AFM is intended to transition from 8 cylinder power to 4 cylinder power to save fuel. However it malfunctioned so that it couldn't transition back from 4 cylinder power. The malfunction occurred while driving at highway speed, approximately 70 mph and towing a trailer. There were no warning messages or other symptoms prior to the failure. This malfunction necessitated removal and replacement of the engine. A certified mechanic completed the repair work.

Service Box appears indicating - "Trailer Brake System" with a loud BING, BING, BING Alert sound. It continues every few minutes... Please note: we aren't using a trailer... I have googled/youtube it and found that this is an issue with many owners. They indicate that the wire harness in between two of the body control modules is defective. It is known to have faulty wire connection. This is intermittent, goes for months and stops for months, and then starts up again. Starting the vehicle, while driving slow or fast, it doesn't matter.

I purchased a 2015 GMC Yukon in March 2024 I drive the vehicle 9 mons, 7500 miles the vehicle has been in service at my local dealership since Dec 13, 2024, for engine and transmission replacement, I have had the vehicle back 3 weeks not the warning light and service warning chime for the "Service Trailer Brake System is on, I have not ever use a trailer with the vehicle, I was told the vehicle needs a wire harness, I have read this a problem in these vehicles that has not been addressed GMC with a recall, I have put A LOT of money in the vehicle. This is an well documented failure in the trailer brake system that GM should repair at no cost to the consumer

The contact owns a 2015 GMC Yukon XL. While the contact's wife was driving 50 MPH, the engine seized. There were no warning lights illuminated. The contact stated that the vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the vehicle failed to start several times; however, the battery and the alternator were replaced. The contact stated that the vehicle failed to start and was towed to the destination. The manufacturer was not made aware of the failure. The failure mileage was approximately 127,000.

LOUD NOISES STARTED UNDER THE CAR AND EVENTUALLY SHUT OFF IN MIDDLE OF THE INTERSTATE, THANK FULLY ANOTHER PERSON HELP US MOVE THE CAR TO THE SHOULDER AND NOTHING HAPPENED

The amount of rust that has been exposed is absolutely insane. My adjuster found the initial section of rust when we had the Yukon in for repairs from a storm. In the past 2 months, the rust has caused a massive hole underneath the rear passenger's side door and we have had no choice but to get it repaired. The initial estimate for this single repair is going to be over $3400. This rust easily could've broken down further and gotten into the brakes and other components right behind it as it sits very close to the wheel well. This is an absolutely dangerous issue and should be addressed.

My transmission is causing a lot of shaking and hard shifting and it's very detrimental to my physical and psychological health. I am a disabled veteran with back problems and every time my Yukon shakes (almost every single shift) it hurts my back and makes it difficult to do anything. This is a very, very common issue with this year make and model but nothing seems to be getting accomplished. GM needs to remedy these issues as a recall since most of us can't afford the $5000-$12000 that this type of repair is going to cost us and GM knows that this is an issue. I can't continue to risk my family's health and safety with this vehicle and it needs to be fixed immediately!

The contact owns a 2015 GMC Yukon. The contact stated that while attempting to accelerate from a stop, the vehicle experienced a loss of automotive power. and no warning lights were illuminated. The contact immediately pulled over, and the vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the crankshaft was faulty, and that the engine needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING) as a possible cause for the failure; however, the VIN was not included. The manufacturer was not notified of the failure. The approximate failure mileage was 112,000.

While driving my check engine light came on. Engine was shaking and running awful. Smoke was coming from the tailpipe. Mechanic upon inspection informed me that a lifter had failed. Causing damage to the cylinder head. Also causing the fuel injectors to fail. The cylinder head had to be removed and sent to machine shop for repairs. Mechanic informed me that this is a very common failure for LS motors. Repair bill was $5300 for parts and labor.

In December 2024 took my GMC Yukon XL to a mechanic. They replaced the lifter in the driver side of the engine. 2500 miles later it is back in the shop for the same side. Now there is a bent rod. One of the lifter/Rod spots collapsed. The mechanic is in contact with the local GMC dealer to figure out what the next steps are. The recent symptoms had to have car towed back to Fairly reliable Bobs mechanic. Pictures were taken and sent to GMC. First time this happened I heard a Tic in the engine and took it straight to the mechanic. second time this happened. Engine light came on flashing, Trackton light came on, Lost power, there was a shimmy when slowing down and a shake at the stop. I will note the second time this happened below.

in september the check engine light came on and the care began making aloud knocking noise. When we brought it to our mechanic he let us know that the engine had bad connection rods and I would need a new engine. The mechanic stated he has seen this multiple times on GM V8 Motors

While driving, the check engine light started to blink and there was a steady knocking coming from the engine. This is the same issues that GMC is currently recalling newer model vehicles for. Safety was at risk because the engine failure happened while driving.

The contact owns a 2015 GMC Yukon XL. The contact stated that while his wife was driving approximately 35 MPH, there was an abnormal sound coming from the engine compartment before the vehicle stalled. The driver was able to steer the vehicle into a parking lot. The contact stated that his wife attempted to restart the vehicle; however, the vehicle failed to restart. The contact stated that his wife observed that the check engine warning light illuminated while attempting to restart the vehicle. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The contact stated that prior to the engine failure, the vehicle had been towed to the same dealer for a failure to start. The contact stated that the starter motor and a 12-Volt battery were replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 127,000.

As I was driving on the highway the check engine lights pops on and the engine starts stalling. The stability track light also came on and the truck was hard to maintain and drive. The truck has been maintained and serviced on a meticulous schedule. This is not the first major problem we have experienced with the truck, we had to do a full transmission replacement on the truck at an 118,000 miles mark. Me and my family have been the only drivers and owner of the vehicle and mostly on put highway miles. I am so frustrated and disappointed in the workmanship and quality of our vehicle.

Lifter failure due to AFM. Car shuttered suddenly and then threw codes and had a bad misfire with engine shaking. Spent $6,700 to rebuild.

Brake vacuum pump faulty again.

While traveling at highway speed, without warning, check engine light started flashing. Pulled off the highway at the next exit and vehicle died in the middle of the road. Towed vehicle to mechanic who inspected vehicle and found no compression (zero psi) on cylinder 1 indicating a major engine failure, rendering engine unrepairable and the vehicle worthless. Either cam, lifter, piston failure in cylinder 1 causing massive engine failure and making the engine unrepairable due to metal shavings in the engine. This is the L87 engine, 6.2L V8 that has been plagued by problems by millions of GM owners. This car had been meticulously serviced and maintained with regularly scheduled full synthetic oil changes. The car have no indication of engine problems beforehand until the engine blew up at highway speeds.

The contact owns a 2015 GMC Yukon XL. The contact stated that while operating the vehicle, the odor of fuel was present inside the cabin of the vehicle. The vehicle was taken to the local NAPA Auto store which diagnosed that the fuel feeder line was faulty and needed to be replaced. The fuel feeder line was replaced but the odor was still present inside the vehicle. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 165,000.

Collapsed lifter due to AFM system

My wife drives a 2015 GMC Denali with the 6.2L engine. My daughter has an almost identical 2016 Denali with the same 6.2L engine. The 2015 had a serious event at approximately 125,000 miles when one of the rocker arm springs broke under ordinary driving conditions and caused the vehicle to be disabled in the midst of heavy traffic. The 2016 had a virtually identical event at 135,000 miles, which caused the rod to be ingested into the cylinder. I believe the rocker arm springs on these engines are defective, also evidenced by after-market double springs being sold for this engine. I have replaced all rocker arm springs on the 2016 with double springs and will do so shortly on the 2015. The GM dealer in Corpus Christi, TX where we had the 2016 towed told me that the only solution for it was to replace the entire engine at a cost of $11,000+. I paid the dealer $1,000+, towed the truck to San Antonio, and had a mechanic in my employ rebuild it for approximately $2,000. The 2015 had not broken the rod and was repaired by a dealer in San Antonio for approximately $1,250. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Transmission failed and was replaced by GM dealership under warranty at 20,670 miles after rough shifts and jerking and lurching movements when driving and when putting vehicle in gear. Truck would also roll if on a hill in Park. Now at 53,438 miles, the same dangerous problems are occurring with only 33,000 miles on the replaced transmission and after inspection, the dealership says the transmission needs to be replaced again. Appears GMC transmission is faulty and dangerous to drive and needs replacement very early in cars lifespan and a transmission should not need replacement so early especially when maintained correctly. Transmissions should last more than 20,000 or 30,000 miles before failing. Estimate for new transmission is $10,000. Called GMC customer service and said nothing they can do out of warranty. Dealership inspected and confirmed problems both times. Check engine light appeared the 2nd time indicating transmission failure but not the first time.

The contact owns a 2015 GMC Yukon XL. The contact stated while driving at an undisclosed speed, the transmission jolted before the vehicle accelerated as intended while depressing the accelerator pedal. No warning light was illuminated. The contact stated that an independent mechanic was contacted; however, the vehicle was not taken to be diagnosed. The contact stated that unknown repairs were performed on the vehicle, but the failure persisted. The manufacturer was not made aware of the failure. The vehicle remained at the residence and had not been driven since the failure. The failure mileage was unknown.

This is a complaint for my vehicle Gmc2015 Yukon. My Truck brake system(vacuum pump is defective). my large truck is a safety hazard on highway and street . when i attempted to park while depressing my brake pedal it instantly before very hard to press to stop my truck. i have to apply lot of force to my foot inorder to stop vehicle. my mechanic inspected vehicle and it show a bad (defective vacuum pump) . base on former complaints about this same problem (2019 NHSTA campaign number 19v645000 ) it show and state the exact problem with my vehicle. this problem started early last year. Also, when driving on highway and slows down,the brake vacuum pump and brake pedal locks up (very difficult to stop something). this happens intermitting times. very scary trying to stop from crashing into cars in front of me sometime.

There has always been break problems with this vehicle. Some recalls have been done. Now there is a new problem, I took it to the dealership. There is a special coverage to fix this issue. GM denied to fix it because the special coverage expired on 06/06/2024. But the vehicle is under the miles and the problem just started.

My power vacuum brakes system is not properly working. In order to stop truck I must depress brake pedal very hard just to stop truck. Crunching noise every time. Made several trip to mechanic . I changed many part ( brakes) rotors , still and brake vacuum sensor ( purchase from gmc dealer . Still have this problem. Mechanic states, need new vacuum pump. Very dangerous to drive. Very difficult to stop . Please investigate this VIN for common complaints.

Defective wire harness between 2 body control modules, causing alarm to go off repeatedly "Service Trailer Brake System" and also "Stabilitrack" will come on randomly and lock my brakes up and all of the features in my dash. This has been very scary to drive and has brought the vehicle close to collision more than a handful of times now.

I keep getting a warning on my display on dash about my trailer brake system is not working. Also my temperature gauge stops working and I have to take off negative cable on battery to reset it. Temperature control sensor has been replaced but the problem still continues to happen.

Leaking fuel from the top of the tank when I start vehicle and after 5-10 minutes it stops this the second time this have happened

The radiator was replaced under PI1513F in 2020. I am currently experiencing the same coolant leak and thermostat issues. Coolant leaked into 4th cylinder and blew head gasket

Pinhole fuel leak located in the bend radius of a plastic, quick disconnect coupling, of a pressurized fuel line, just forward of the fuel tank. Being a pressurized line, the leak is continuous, whether the vehicle is on, or off. Due to the location of the leak, fuel is sprayed upwards onto other shielded lines and components, representing a safety/fire hazard.

On several occasions, have noticed the brakes failed to operate properly when vehicle is at low speed. The pedal becomes extremely hard to push and there is almost no braking power. This has occurred in stop and go traffic and nearly caused an accident.

The contact owns a 2015 GMC Yukon XL. The contact stated while driving at an undisclosed speed, the front passenger's side headlight failed to illuminate. The vehicle was taken to the dealer, where the passenger's side taillight was replaced; however, the failure recurred. The vehicle was taken back to the dealer, and the contact was informed that the front passenger's side headlight needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 83,415.

Vehicle jumps when put in drive or reverse

Trailer service alert

My engine went out, and I had to have it rebuilt. There was a check engine light on. My steering goes out and in without warning while driving. I have talked to the dealership, and they stated that all safety recalls were done on my vehicle. My safety and those of others were put at risk when the steering failed. I almost crashed my vehicle in traffic. There were no warning messages prior to the failure. I did see that there was a recall in 2019 and the dealership will not inspect the vehicle without payment.