Transmission /torque converter I was driving on highway and all of a sudden what seemed like the engine lost power and I could not accelerate. After heading to slow lane and few seconds later everything went back to normal. A week later same thing happened but this time it wouldn-??t shift to second gear. I was stranded on side of road. Before calling help, I let it idle for a few minutes and tried again to put in drive, it worked again. I made it home. Next day it just started making a loud noise under truck. Was able to get a mechanic and he said it-??s the transmission. Has 103k miles and is out of warranty

- San Marcos, TX, USA

Lifters

- Chataignier, LA, USA

The contact owns a 2017 GMC Yukon. The contact stated that while driving at 20 MPH, the vehicle slipped out of gear, causing the vehicle to independently slow down. No warning light was illuminated. The vehicle was taken to a dealer to be diagnosed. The contact was informed that the failure was due to a faulty transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000. The VIN was unavailable.

- Bella Vista, AR, USA

At traffic light in drive position, shifting drags when accelerated and hard shift jerk, slipping gears or driving and not shifting at all

- Rome , OH, USA

The transmission was jerking jumping and was replaced under warranty and it still can not be fixed. Cause the vehicle to jump backward and hard speed.

- Cullman, AL, USA

The contact owns a 2017 GMC Yukon. The contact stated while driving from a complete stop, the vehicle hesitated to respond while shifting from first to second gear. Additionally, the contact stated that while driving at various speeds and depressing the brake pedal, the brake pedal would hesitate to respond, causing a 40-50 feet stopping distance delay. There was no warning light illuminated. The contact stated that the failure recurred while driving. The vehicle was taken to an unknown dealer who advised the contact to take the vehicle back to the Honda dealer where the vehicle was purchased and sold for repair. The vehicle was taken to the Honda dealer. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 120,564.

- Arlington, TX, USA

First problem started back in May.. it-€™s went downhill ever since. Hard shifting was happening. GM dealer said I needed a new transmission. Found out from local repair shop that I needed a torque converter ($600) multiple transmission fluid changes (apparently many issues for A Lot of people) changed that. Then had to change Valve Body & TCM. ($540) everything started working but not 100% did a full tune up having multiple misfires constantly then shuttering when idle. Also replaced ECM ($200+)After changing all spark plugs, wires, oil, etc. the AC was having issues had been having issues for months. Kept adding Freon had to replace AC Condenser (works great now, was told by repair shop that-€™s also very common in these year models. Condensers are all weak in the same spot) just recently October 2022, my instrument cluster started going haywire. Gauges going off and on screens going blank. Had Alternator and battery tested both test fine. No loss of power but when hitting the start/stop vehicle would continue to run and lock and unlock when it wanted. Husband took the alternator out to have it tested again. They tested 3x 1st. Good, 2nd Error, 3rd Bad ( it was overcharging at 16.5V) replaced Alternator ($290) gauges still going haywire, like before it is only sometimes, when they do it-€™s bad bad.. but I can also drive to town and back 20-30 miles and not the first issue. Just left GM with a new Battery Distribution Fuse Block ($153) because of course it can-€™t just be a regular ($8-10) mega fuse, hopefully this will fix my issue. We pay too much money for this vehicle to have all of these issues & none be under warranty. I-€™ve been having the TAILLIGHT ISSUES as well ever since I purchased the car in 2018. When I received the recall on the taillight it was 6 years up to 72,000 & of course my vehicle had 79k miles on it at that time so that-€™s wasn-€™t covered.

- Amite, LA, USA

The contact owns a 2017 GMC Yukon. The contact stated while stopped at a traffic light, the accelerator pedal was depressed; however, the vehicle failed to respond. The contact stated there was no warning light illuminated. The contact stated a Police Officer assisted in moving the vehicle out of the roadway. The vehicle was not drivable. The contact towed the vehicle to the local dealer however, the mechanic was unable to duplicate the failure. The vehicle has not diagnosed the vehicle nor repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 77,000.

- Sparks, NV, USA

My vehicle began shuddering during acceleration and would violently jerk forward after gas pedal was engaged with decreased power in forward acceleration and increase in rpm. This last a couple of weeks. Now, my vehicle is completely broke down and at a GM certified service center. The Service manager states torque converter completely went out and the transmission is burnt up. The mileage is at $61,000, so GM warranty won-€™t cover it and the company that holds the extended warranty I purchased hasn-€™t been able to be successfully contacted. There is a -€œservice-€ bulletin but no recalls and a class action lawsuit (that I-€™m not a part of) but no recall. My vehicle completely lost power going 50mph on a busy road without warning. This needs to be a recall due to this dangerous circumstance.

- Salt Rock, WV, USA

The transmission failed while merging and almost caused a collision. After a complete transmission replacement, the fuel injectors failed causing the same issue. GM extended fuel injector warranty due to the number of similar issues, but not in my state.

- Lexington , KY, USA

My car is not shifting right. I took it into GMC, and they said they corrected it. I have taken in two times for this issue already. Today I almost was in a car accident because the car would not shift properly and it shoved me forward like A car hit me from the back. The car is not shifting properly at all. And now it-€™s making a muffling sound and it-€™s like stuck in a gear. I pulled over and I parked and then I reversed and then I went to hit the gas again to try to go slowly and it jolted forward again. This is serious and needs repaie

- Dallas, TX, USA

When traveling at low speeds (10-20 mph), I have continuously experienced "lunging" and "jerkiness" with my transmission for over 2 years now. Despite approximately a dozen separate evaluations and/or repairs by GM-certified technicians, the problem continues to exist. I am told that the issue is normal and that I must live with the issue as being normal. Not only am I concerned about the ongoing maintenance cost, but the safety of myself and passengers should the vehicle strike an object or person accidentally. According to various online sources, there are hundreds of GM owners who are experiencing similar issues, and even a class action law suit has been filed. However, there has been no acknowledgement or meaningful resolution to the problems.

- Franklin, TN, USA

My 2017 GMC Yukon denali continues to have a very loud shudder sound as you accelerate.

- Hyattsvilee, MD, USA

Vehicle has hard shift from park. Most often when first driven of the day but also occurs when stopping for redlights or stop signs while traveling.

- Marion, AR, USA

Beginning around 56,000 miles the transmission started lurching and stuttering at slow speeds. It is worse when cold but never quite goes away. Dealership kept it for 3 days and felt it but said all was within normal range. Beginning around 65,000 it started stuttering when trying to accelerate while in motion, such as on the highway when trying to pass. This is not only annoying but dangerous when you can't get the power you need when needed because the transmission can't decide when to shift.

- Trinity, NC, USA

From time to time the vehicle lunges forward when im stopped at a stop sign, crosswalk or a stop sign. I have had it into the dealerships numerous times but GM only wants to put bandaids on the issue, GM has a major issue with their eight speed transmission, they only have internal bulletins to their dealerships. The dealership tells you to bring the vehicle in and they will drive it with the customer, but the issue is intermittent and doesnt always lunges, GM is trying to outlast the customers hoping they will get tired of dealing with the issue and they will go away. GM cannot afford a recall because of the size of the problem, several deaths will occur until this issue is resolved. The issue happens on the roadways

- Naples, FL, USA

While driving at slow speeds the transmission will suddenly shift extremely hard into first gear when while lightly increasing speed. The transmission will shift extremely hard into first gear while gradually coming to a stop. Occasionally while driving slowly (parking lots) the transmission upshifts to second gear causing the car to lurch forward nearly causing a collision. This is a continuing problem that cannot be repaired at the dealership.

- Murrieta, CA, USA

I purchased my 2017 Yukon denali in 2017. Since the day I bought it I have noticed a problem with appears to be the transmission. I will be at a stop then I accelerate and the car has a hard shift forward. It tends to pull forward all of a sudden but very violently. I have taken in my Yukon to the two GMC delerships in my area several times. They have serviced it and even performed a transmission flush but still the problem has always continued. I have been dealing with this Yukon problem for two years now. Its so dangerous to drive.

- Edinburg, TX, USA

I have taken it in to the dealership several time for inspection. The first time involved a repeated vibration while driving. The resolution was to change or flush the transmission fluid to get rid of any metal shavings. Since then I've taken it back into the dealership twice with reports of jerking, a delayed start when accelerating, and most recently a lurching when shifting between reverse and drive. Each time they have said this is normal.

- Mason, MI, USA

The transmission or torque converter are shuddering how do we fix, how do I protect family, will the transmission fall out on highway can I keep driving and be safety with family?

- Cape Canaveral, FL, USA