2017 GMC Yukon

My engine starting making a knocking/ticking noise out of no where. I was traveling alone on the highway so I stopped to check it. I got to a gas station and google searched it and it came up that the LS 6.2 engine that is in my vehicle was recalled on other models because of this issue. I did have a mechanic look at it as well and he agreed it is that same issue that was recalled in other models.

The 8-speed automatic transmission (Hydra-Matic 8L90) on this 2017 GMC Yukon SLT 5.3L V8 has failed. This is a repeat failure — the transmission was previously rebuilt in 2020 under a GM recall/service action for the same known defect affecting this transmission type. The transmission has now failed again in 2026, approximately six years after GM's prior repair. Prior to failure, the vehicle exhibited hard shifting, shuddering during acceleration, and hesitation between gear changes — symptoms consistent with the known defect pattern documented across 2015–2019 GM vehicles equipped with this transmission. The failure was confirmed by a service center. The vehicle is currently not safely drivable. Safety concern: erratic and unpredictable gear changes, including sudden lurching and hesitation during acceleration, create a dangerous condition for the driver, passengers, and other vehicles on the road. GM has been contacted through their Customer Assistance Center (case opened). GM's initial position was that they cannot assist because the vehicle is out of warranty. However, this is a repeat failure of a previously repaired known defect. GM issued 13+ technical service bulletins on this transmission and has been aware of the root defect since at least 2018. A federal class action (Speerly v. General Motors, E.D. Michigan) covering this exact vehicle type and transmission has been certified and upheld by the Sixth Circuit Court of Appeals. The prior GM repair did not remediate the underlying defect.

My truck lost power while I was driving. Took to a shop and they found that a had a bad lifter. I have all of my service records from the GMC dealership where I had my vehicle serviced on a regular basis.

Sitting at stop light engine began running rough and smoke coming out. CEL came on and began flashing, pulled over and had it towed. Diagnosis was PO300 misfire, dead miss on cylcinder 4, cylinder plug 4 is fuel fouled, cois is fine has good spark- caused by failed lifters. Needs engine replacement. Vehicle always serviced, garage kept and in mint condition with 89K miles.

THE BRAKE LIGHT IS OUT AND A SINGLE TAIL LIGHT IS OVER 500$ Very dangerous to have tail light out and can cause an accident. There should be a recall on these defective LED lights.

At parking lot speeds, there have been many incedents of brake failure, when pressing pedal to stop pedal pulsates and becomes very hard to stop the yukon. there seems to be a vacume or booster issue. Yukon will be fine for days then reaccure when slowing at stop sign or waitng at red light and moving foward in slow traffic to sign or llight and then in happens again. scary and unreliable when using brakes at low speed intersections or continous stop and go's

The contact own a 2017 GMC Yukon. The contact stated that the vehicle failed to shift from 2nd to 3rd gear while driving and remained stuck in gear. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and informed the contact that assistance would not be provided because the warranty had expired. The failure mileage was approximately 78,000.

WHEN I BOUGHT THE YUKON 3 YEARS AGO THE TRANMISSION WENT OUT WITHIN MONTHS, THEY REPLACED IT WITH A USED ONE, NOW IT IS STARTED TO DO THE SAME THING, IT WILL SLIP IN AND OUT OF GEAR, WHEN YOU GIVE IT GAS IT WILL JUMP INTO GEAR AT AN IDLE IT WILL DROP OUT OF GEAR, IT'S BEEN DOING THIS EVERY SINCE THEY PUT THE USED ONE IN, I NOITIED THEM THEY SAID THAT IT IS NORMAL???? I HAD THE WORK DONE @ PAHRUMP VALLEY AUTO PLAZA. I'M AFRAID THAT WHEN IM AT A LIGHT IT WILL NOT GO INTO GEAR AND I WILL GET HIT. NO WARING LAMPS CAME ON AT ALL, IT HAS PROGRESSIVELY GOTTEN WORSE.

At low idle speeds like in a parking lot we almost hit another car because the brakes were very hard to press. No power brakes. Felt as I was having to stand on the brake pedal with both feet to stop my vehicle from hitting another car at a grocery store parking lot going 5 mph! A light flashes on and says”service brake assist “ light goes away and drives normal and brakes normal except when you get to a stop sign, or traffic light. This happens a few times and I’m not driving the car because of it because I might hit someone

Full engine failure

We noticed the passenger side taillight was out. It’s not a simple bulb replacement but an entire assembly. It was put back in place and it lit up again. A few weeks later it wasn’t working. Pounded and tapped on it and it works again. We're guessing there is some sort of short so we asked for an estimate on getting an assembly replacement when it was in for a regular oil change. Shocked that a necessary part would cost $1,112.77!!! Whatever happened to changing a bulb for a few dollars?

116k miles and the transmission went out. Spent almost 6k on a jasper to replace it. I don’t think I need to explain what happens when a trans goes out. It did all of those things.

Yukon break tail lamp problems. Brake lights work intermittently. Very dangerous! The break lights will work intermittently and then work. This was an issue with the 2016 models and GM issues a recall. There is no recall for 2017 which I don't understand because nothing has changed with the manufacturing process. I researched and there is a class action but in California only.

My 2017 GMC Yukon SLT,, has been having shifting problems, including hard or delayed shifts, clunking, jerking, and even sudden jolts when downshifting.Rough or jerky shifts, particularly during acceleration and deceleration, a delay in engaging gears, especially when shifting from park to drive or reverse. Transmission shifts are very rough in slow traffic with as much as one to two-second delays in shifting into gear with a loud thump. It is so rough that it feels like someone may have ran into your back bumper. It is also bad enough that it startles the driver, and it could be a safety issue

The vehicle main information cluster randomly goes in and out and now has completely stopped working. This is the information display that shows Park, Nuetral, Drive, Reverse, Fuel gauge, digital MPH and other information such as oil tire pressure, turn signals, forward collision. Just knowing if the vehicle is in Park Reverse or Drive is a huge saftey issue. This seems to be a common problem on GM vehicles and i wcan't seem to find a recall issued for the saftey factor that the vehicle can be assumed to be in Park and it's actually in Reverse. The first time I noticed this problem was Sept. 05, 2020 but it had reset when I restarted the vehicle. The problem would resurface occasionally but always came back on when restarting the vehicle. But know it seems that restarting the vehicle is not fixing the problem and the screen has been blank for the last 3 days.

[XXX] Please call me to discuss this matter on my GMC Vehicle. [XXX] Yukon GMC This might not be your department but lead me to the right area local, federally or NHTSA so I can discuss these issues in detail Issues I have had that are not normal and maybe need to be on a recall or on consumer alert list for major defects on major components Brakes losing total traction had to be fixed unannounced (recall) Rear Tail lights giving up , had to be replace (Recall) AC system failing had to be replaced Paint completely fading on hood prematurely Transmission failure, had to be overhauled Engine Failure with need of Lifters All the above high cost to fix and having no vehicle in the interim . These issues have been during the warranty and now out of warranty. Other cars do not have these many issues. [XXX] [XXX] On Friday, April 25, 2025 at 01:05:11 PM EDT, [XXX] [XXX] > wrote: Attention Mary Barra I am very disappointed that my 2017 Yukon has engine failure now (lifters issue). I am expecting to get help from your office and see what you can do to resolve this matter . I have owned multiple vehicles including Mercedes SUV and BMW SUV with no problems like this.. I have had nothing but problems for just over 100k miles vehicle that is still considered fairly new . Most vehicles offer warranties up to minimum 100k longer than yours especially with engine failure Please contact me to discuss this and see if you can cover the issue at hand . I am not sure who i need to be contacting to resolve this issue with the local automobile dept, recalls, lemon law or any government agency that deals with this issue. I would like to resolve this issue whereby i am satisficed to purchase a vehicle like this in the near future. Currently the vehicle is at your dealership. The car was built with defects. VIN [XXX] Please call me at the below number. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2017 GMC Yukon. The contact noticed that the chrome on the rims of the vehicle was oxidized. The vehicle was taken to an independent mechanic who replaced the rims. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.

Magneride defect - struts leaking !!! 85,000 miles This is unacceptable- car is dangerous- bouncing - rough ride- shaky- jerking Should be a recalll! Look it up online- many many complaints!

I brought a 2017 Yukon GMC from a dealership. When I first drove it on a highway it began to pull and shake, to the point it slow down on the highway. Also the dashboard started to shake , vibrate on the highway. When I step on the gas on a local road ,the transmission is pulling to pick up speed. Took it to a Mechanic and explained to him what was going on he test drove it and told me it's the transmission. He also said this year truck " GMC" truck like this has bad transmission. I did my research and find out that it is true. I have a disabled mother that I take to her doctors appointment and I'm scared bto out her in this truck. This is a 1 vehicle and anytime the truck will just slow down or vibrate or shake. No check engine light comes on when it happens.ifni driving on A highway sometimes the check engine light will blink 3 to four times then go back out.

The contact owns a 2017 GMC Yukon. The contact stated upon starting the vehicle, and while driving at various speeds, there was an abnormal ticking sound coming from the engine. There was no warning light illuminated. The contact stated that the abnormal ticking sound had gotten louder. The vehicle was taken to the dealer, and to several independent mechanics; however, the cause of the failure could not be determined. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 181,000.