What 977 owners told NHTSA about the 2015 GMC Yukon Denali Xl 1500

The contact owns a 2015 GMC Yukon. The contact stated that while driving at 35 MPH to work, the vehicle shifted into neutral and into low and failed to drive at about 20 MPH. The check engine light was flashing. The front collision was unavailable. The contact left the vehicle at a gas station. Upon research, the contact located NHTSA Campaign Number: 14V374000 (Power Train), which was similar to the failure. The local dealer was contacted, who confirmed there were no open recalls. The vehicle was not diagnosed or repaired. The manufacturer was contacted via chat, who referred her to the local dealer and manufacturer service center. The contact informed her to confirm the coverage with the dealer. The failure mileage was approximately 283,000.

NHTSA ODI 11742098

The contact owns a 2015 GMC Yukon XL. The contact stated while driving at various speeds, the vehicle shuddered. The contact stated that upon pulling into a parking lot, the vehicle stalled. The vehicle was pushed into a parking space with assistance. Additionally, the contact stated that while her husband was test-driving the vehicle in the driveway by driving forward and reversing several times, the transmission locked up while depressing the brake pedal the thirteenth time. A mobile mechanic diagnosed the vehicle and determined that the transmission control module had failed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a related recall. The failure mileage was approximately 177,000.

NHTSA ODI 11731474

Transmission shuttering between 50-65 MPH.

NHTSA ODI 11727866

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.

NHTSA ODI 11727058

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.

NHTSA ODI 11726283

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.

NHTSA ODI 11711796

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.

NHTSA ODI 11703969

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.

NHTSA ODI 11694623

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.

NHTSA ODI 11682839

The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving 80 MPH, the vehicle hesitated, and failed to accelerate as intended while depressing the accelerator pedal. In addition, there was an abnormal knocking sound coming from underneath the passenger’s side of the vehicle. The check engine warning light was illuminated. The contact arrived at the residence and used a personal diagnostic reader and retrieved information related to misfires in cylinder #2 and #4. The contact replaced the spark plugs and the ignition coils. The contact test drove the vehicle, and the check engine warning light later illuminated. The contact swapped the ignition coils; however, the failure persisted. The vehicle was taken to the dealer where it was diagnosed that Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) had failed and caused the lifters to fail. The vehicle was not repaired due to the cost. The vehicle remained at the dealer unrepaired. The manufacturer was made aware of the failure but offered no assistance. The failure mileage was approximately 96,000.

NHTSA ODI 11680375

Truck loss power turning off while making a turn into driveway with incoming traffic. Happen on several occasions. Diagnostic at dealership states high pressure fuel pump is leaking fuel internal making it run rich. NHTSA states this model truck has had previous recall.

NHTSA ODI 11674347

Driving down the expressway at 65MPH, and the Vehicle completely stops, almost causing a collision. After researching the problem at the GMC Dealer, it appears that the entire engine has internally failed. Apparently it was a Complete Engine Failure.

NHTSA ODI 11673951

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.

NHTSA ODI 11672077

The transmission failed at 59,700 miles. The transmission will shift up and down by itself. The transmission is revving up when trying to pass and the vehicle will go limp for a few seconds and then the gear with kick in really hard. In stop and go traffic the transmission slips constantly and could cause an accident due to the limp mode.

NHTSA ODI 11668506

The contact owns a 2015 GMC Yukon XL Denali. The contact stated while driving approximately 30-35 MPH, the engine and oil warning lights illuminated, and the contact pulled over. There was no indication of oil leaking on the ground. The contact had her son-in-law, an independent mechanic to check the oil and it was determined that the oil level was low. The contact stated that oil was added; however, three days later the oil level was low again. The vehicle was taken to the local dealer and the contact was notified of an excessive oil consumption failure. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The warranty company declined to repair the vehicle. The failure mileage was approximately 85,000.

NHTSA ODI 11667092

The contact owns a 2015 GMC Yukon. The contact stated that while depressing the brake pedal, added pressure was needed before the vehicle came to a stop. The contact stated that the vehicle hesitated or jumped before coming to a stop. Additionally, the contact stated the transmission was slipping. The contact stated that while driving at various speeds, the vehicle stalled before self-correcting. The contact also stated that while idling at a stop light and attempting to accelerate, the vehicle hesitated, but gradually accelerated as needed. The contact stated that the rear taillight intermittently failed to illuminate. The contact stated that the check engine warning light was illuminated. The transmission fluid was flushed; however, the failure recurred. The vehicle was taken to the dealer who diagnosed the vehicle and determined that the transmission was fractured, and the light bulbs needed to be replaced. The transmission was not repaired or replaced. The headlights were not replaced. The dealer confirmed that the brakes were included in NHTSA Campaign Number 19V645000 (Service Brake, Hydraulic) and the vehicle was repaired; however, the failure persisted. The vehicle was driven to the residence without further repairs. The contact stated that the vehicle had become inoperable. The manufacturer was not informed of the failure. The failure mileage was approximately 195,846.

NHTSA ODI 11666325

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.

NHTSA ODI 11665834

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

NHTSA ODI 11663384

The contact owns a 2015 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle failed to restart. No warning lights were illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with compression in cylinder 7, resulting in damages to the engine. The contact was informed that the engine needed to be replaced. The vehicle was repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 100,000.

NHTSA ODI 11661489

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

NHTSA ODI 11660860

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.

NHTSA ODI 11660885

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!

NHTSA ODI 11660633

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.

NHTSA ODI 11660673

Started my 2015 Yukon XL, drove approximately 6 miles to get gas and was to head out onto the highway. After gassing up and starting engine it began to idle very rough with a shake going on and ticking noise. No previous signs of any issues. Slowly drove back to my house at 20 miles an hour and called Mandal GMC dealership. They suggested having it towed to them for inspection. Upon inspection they said the AFM/DOD #1 exhaust lifter was bad and needed replaced. They replaced all of Bank one lifters and said their was no damage to camshaft. Drove it that night after repairing it and everything seemed fine. They called the next morning and said when they started it up the ticking was back again. They then supposedly took off head cover and inspected the camshaft again and said it was damaged and I would need a new engine to the tune of $18,000.00. I purchase it in 2021 from them use and paid $33,000.00 and now still owe even more than the engine repair. I said it would cost more than the vehicle was worth and they had done $4,000.00 of repair that didn’t even get the issue fixed. I am a senior on Social Security and can not afford to continue to pay 20,000.00 for the loan and then another $18,000.00 for a faulty engine design that caused the problem in the first place. May have to join the thousands of others in the class action to get GM to not put out such untrustworthy engineering. Now $37,000.00 piece of Yard Sculpture !! The morning that it occurred was the first sign of flashing engine warning on dash.

NHTSA ODI 11659069

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.

NHTSA ODI 11659107