Power Train Problems of GMC Acadia - part 1

The contact owns a 2018 GMC Acadia. The contact stated that while the vehicle was parked and occupied, the shift to park message was displayed while the vehicle was in park. Neither an independent mechanic nor the dealer was contacted. The vehicle was not taken to an independent mechanic or dealer for diagnostic testing. The vehicle was not repaired. The contact related the failure to NHTSA campaign number:17v516000 (power train); however, the VIN was not included in the recall. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The failure mileage was 113,000.

See all problems of the 2018 GMC Acadia 🔎.

The contact owns a 2018 GMC Acadia. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate while attempting to shift gears. The contact stated that the vehicle jerked and made an abnormal sound, with the check engine warning light illuminated. Additionally, the contact stated there was black and white smoke coming from the rear of the vehicle. The vehicle was taken to the dealer, where it was diagnosed with transmission, cooling system, and fuel system failures. The dealer also determined that the engine was leaking oil. The dealer informed the contact that the vehicle required several repairs. The vehicle was not yet repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 126,000.

Urgent safety defect — recurring “shift to park” — rollaway risk vehicle: GMC Acadia | ~99,684miles same defect repaired free under gm goodwill in 2021 (shifter replacement, TSB 19-na-206) after 4 failed attempts. Now failed again in 2025 — vehicle will not shut off, drains battery, risks unintended rollaway. Gm dealer refuses repeat coverage despite prior admission of defect. This is a known design flaw — thousands of complaints — no recall. Demand immediate safety recall — this is a fire/rollaway hazard. Attached: 2019- 2021 repair order ($0), TSB 19-na-206, prior NHTSA complaint, previous tac case: 9-6623251184.

Driving down the street and I heard a extremely loud drop. The transmission went out with no warning or even indication of trouble. The vehicle ran very smooth until that point.

See all problems of the 2017 GMC Acadia 🔎.

I own a GMC Acadia 2019. The problem that is happening has to do wiyj "shift park" message I am getting when I turn off my car. It is "in park" but this message in instrument panel shows and keep beeping. After several shifting in different gears stop sometimes , sometimes not. I see some messages that there has been a recall, others saying not. I see a lot of Acadia 2019 owners are having this issue. I will try to coontact dealer but it looks like they are not helping others.

See all problems of the 2019 GMC Acadia 🔎.

The contact's boyfriend owns a 2017 GMC Acadia. The contact stated that while driving at various speeds, the vehicle jerked abnormally while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to an independent mechanic who was unable to determine the cause of the failure; however, the mechanic stated that the failure was related to the transmission. The contact called two local dealers about the failure, and both stated that the vehicle could not be serviced in the near future. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 106,000.

The contact owns a 2019 GMC Acadia. The contact stated that after arriving to her destination and shifting into park(p), the message "please shift to park" was displayed and the vehicle was unable to be turned off. After several attempts, the vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. 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, 88,000.

I own a 2019 GMC Acadia slt. The problem started after arriving at my destination and shifting into park. The message "shift to park" was displayed on the instrument panel. The vehicle can sometimes be turned off and sometimes instrument panel continues to ding and does not shut off. After several attempts the vehicle can returned to normal and sometimes it does not. This problem is a regular occurrence. No warning lights illuminate. The vehicle was taken to a dealer on my way home from a long trip. The service tech stated that there has been a lot of complaints and he was surprised there were no recalls for this problem. The problem still persists on and off daily. The failure mileage was 49,000.

Received message "steering assist is reduced. Drive with care". This is related to a faulty thermostat and temperature sensor.

See all problems of the 2021 GMC Acadia 🔎.

The contact owns a 2018 GMC Acadia. The contact stated that while attempting to turn off the vehicle, the "shift to park" message was displayed, preventing the vehicle from turning off. After researching the failure, the contact linked the failure to NHTSA campaign number: 23v172000 (power train). The local dealer was contacted and informed the contact that a diagnostic test was needed. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 60,000.

The contact owns a 2018 GMC Acadia. The contact stated that while shifted into park(p), the vehicle was unable to be turned off. The message "shift to park" was displayed on the instrument panel even though the gear shifter was in park(p). The gear shifter was shifted to park(p) and wiggled several times before the transmission was properly shifted into park and the vehicle was turned off. The contact stated that the failure had occurred once before, and the battery cables were disconnected to turn off the vehicle. The contact became aware of an undisclosed recall online; however, the VIN was not under recall. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 51,800.

*transmission or torque converter. *vehicle shuddering or shaking at low speeds or when shifting. *studders while trying to drive fromstop. Can casue accident. Check engine lights or any warnings prior to failure. Not accuse anything when checked by diagnostice tool. *issue started in sept but is ongoing.

When I shift my car to park, it doesn't register that it is in park. It won't let me shut the car off. I can move the gear shift around a bit and it will eventually say it is in park. It can take sometimes up to 10 minutes for me to be able to shut off my car. I have read that this is a known issue and there was a recall, but my VIN number was not included for some reason? the issue started about a month ago and has been continually getting worse.

Car keeps throwing poo14 code for vvt sensor, I’ve replaced the sensors and checked wiring on the side of the road and no damage found, went online and read multiple complaints and recalls on the same issue I’m having with my car. I enter my VIN and no recalls have been found. I have a 2020 GMC Acadia denali 3. 6l v6. As well and the rear view camera cutting in and out multiple times anlmost causing an wreck. And a system update didn’t fix the issue.

See all problems of the 2020 GMC Acadia 🔎.

Shift to park warning. Vehicle will not power down.

Vehicle will shutter or buck at variable speeds like, 35-38 mph, 40-45 mph and so on. If I take my foot of the gas and reapply it will shutter buck again at almost any speed. I took it to a mechanic and there are no codes, no check engine light. Shop recommended changing the transmission fluid so we did. Car still responds the same way, shutters and bucks when reapplying fuel pedal or slow acceleration.

The contact owns a 2017 GMC Acadia. The contact stated that while driving at an undisclosed speed, the transmission was slipping while attempting to change gears. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 77,000.

Valve body car would not go in park.

In March 2025 my 2019 arcadia with only 44112 miles begin indicating a shift to park error message when I parked and shifted into park the error message showed on the instrument panel and the warning alarm sounded and would not stop showing the error message until I restarted the car and shifted from drive to park repeatedly. I couldn’t get out and close the door, and the warning stop, it would continue to sound the warning. The only way to stop the warning message and alarm was to stay in the car and repeatedly start the car shift to drive into park switch it off and if it still showed the error and warning, do it all over again. This could take up to several minutes and many tries. If I had of left the car all the warning would have been sounding indicating it wasn't in park. I didn't know if it was really in park or not and if not, the car could have potentially rolled off causing injury or damage. To try and determine what was the cause of this problem I searched the internet to find a solution, to do a reset or simple fix and discovered that GMC had known about this issue since 2016 and the only solution was an in the shop repair requiring replacement of some parts. The "shift to park" error in GMC vehicles is considered a safety issue by many owners and has led to class-action lawsuits. The issue, which prevents vehicles from recognizing when they are in park, can lead to the engine not shutting off, potential for vehicle roll away, and even entrapment inside the vehicle. On April 16, 2025 I had the repair done at hayward allen, Cadillac – GMC dealership, 2590 atlanta highway, athens georgia 30604. The total repair cost was $732. 36 (invoice attached). ). I sent a copy of this invoice by email to GMC customer service. After customer service reviewed the amount they call and informed me they could only reimburse me a total of $73. 24.

I noticed when I put my car in park and turn key off, it’ll ding to warn me to “shift into park” this been becoming a problem recently and it’s been happening more often.

When trying to park car, vehicle will not detect the shifter is in park. If the car does not detect its in park it will not turn off and stays running hampering your exit from the vehicle. This is truly an unsafe condition due to not knowing how to get the car to shut down as well as not knowing if the car will roll if you do get out.

Shift to park issue. This 2019 Acadia denali has been serviced twice for a shift to park issue:(it’s a known problem that occurs when Acadia vehicles fail to recognize that the gear shifter is in the park position). The first time was under warranty in 2022 and it has just been serviced again for the same problem. The system is the same as the older gm recall for this problem and the recall should also include this model as well but unfortunately it does not.

The contact owns a 2018 GMC Acadia. The contact stated that while parking the vehicle, the gear shifter was shifted into park(p), but the “shift to park” message was displayed. The vehicle made chiming sounds. The contact shifted the gear shifter back and forth, then shifted into park(p) before the proper gear was recognized. The vehicle was taken to an independent mechanic; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000.

The contact owns a 2017 GMC Acadia. The contact stated that while driving approximately 10-15 mph, the vehicle made an abnormally loud blower motor sound while accelerating, before the vehicle lost motive power. The transmission was shifted to neutral(n) and pushed to the side of the roadway. The tpms warning light was illuminated. The vehicle was towed to an independent mechanic who determined that the transmission clutch had failed, and the transmission needed to be rebuilt or replaced. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed there was no recall coverage or warranty coverage on the VIN for the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 132,000.

The transmission failed at 90k miles, causing shuddering and stalling on acceleration. This has occurred several times on major highways and is very dangerous.

Leaking transmission fluid- transmission fluid all over the underbody of my car. No reason to be leaking. Can’t find where it’s coming from. Every time I park than move to leave there is a puddle of transmission fluid.

See all problems of the 2024 GMC Acadia 🔎.

Shift to park light comes on and car won't shut off.

Car has delayed shifting, and jolting when switching gears. Transmission temp gets up to 270 degree while driving.

About a month ago when I shifted my vehicle into park and shut the vehicle off, "shift to park" appeared on dash display for which I had to restart the vehicle, shift it into another gear and attempt to shutoff the vehicle again. Occasionally this would work but not all the time. Other times when shifting into other gears did not work I had to restart the vehicle, press the shifter button multiple times and then was able to shut the car off with no "shift to park" appearing. On 7/11/25, arrived to work and had to performed the shifting the vehicle into another gear and was able to shut the vehicle off. When I went to leave for lunch, the car would not start at all, check the gm app and it stated "critically low battery". A CO-worker helped jump the battery and I was able to start the vehicle. When I went to leave work for the day, the vehicle would not start again with no notification as to why. My CO-worker jumped the battery again and vehicle started now with all the system lights on dash staying on and warnings displayed. 7/12/25 vehicle struggled to start and all system lights were still on. Later in the day, the vehicle would not start and all overhead, dash, display, taillights would not shut off. We jumped the battery and took the vehicle to our local dealer.

Unknowingly what the actual issue is in this 2016 GMC has major safety risk in electrical major different problems it has caused me safety issue with little one in the car and my family not knowing the issue with not understating it is a safety risk it has shut off 20 times restarting the radio for no reasoning also it sounds like the powertrain is going to stop working unless u put in l shift which I think that is nuts I was on the highway and it just stopped with the key locked in it like what actually f is going on this SUV has had problems since day one.

See all problems of the 2016 GMC Acadia 🔎.

Ratle sound in the engine thinking it may be the timing chain. Code p0430 came on stating catalytic converter bank 2 needs replaced. We replaced O2 sensor downstream on bank 2 code was cleared by shop. After driving a few miles same check engine light came on and I took it to the shop they hooked it up to run the code and it was the same p0430 again.

See all problems of the 2012 GMC Acadia 🔎.

Component: shifter assembly & jumper harness safety concern: can't turn off vehicle - carbon monoxide poisoning, physical safety when parking not at home, as I would have to leave vehicle running. . . Message in dash was present when I brought vehicle to dealer. Dealer also replicated no inspection other than dealer. Part returned to me. Warning message has been coming on for past 60 days or so, progressively getting more frequent I receive a 'shift to park' message in telltale after I have shifted to park. At times, vehicle will not shut off until shifter is manipulated for several minutes. I have concerns that I cannot park vehicle in garage, if I cannot shut it off. Gm is well aware of issue, but has yet to recall them. Dealer actually had replacement shifter in stock for a same day repair. . I was charged $778. 98 for the repair, and gm's customer assistance center response to me simply was to file a complaint with NHTSA. My wife does not feel safe driving, as there is no guarantee vehicle will turn off. Dealer replicated issue when I brought to dealership. Dealer has replaced part and has them. Warning lights only appeared when problem reared itself, initially began about 60 days ago, but is not occurring on approximately 2 of 3 shut downs.

When placing the gearshift in park a warning on the dashboard says the vehicle is not in park and I get warning bells when shutting the engine off. This has been happening for almost a month.

We receive a shift to park message when we try to turn our 2019 GMC Acadia off. The vehicle is already in park, but an alarm bell keeps going off telling us it is not. The vehicle will not allow us to shut off the vehicle properly and results in battery drain and inability to lock the vehicle. We have noticed there is a class action lawsuit and recalls from previous year's models and the 2019 model manufactured in ohio, but ours was manufactured in tennessee. Our year, make, and model isn't listed in the class action lawsuit and/or a recall. This is very frustrating considering the number of similar issues/complaints in regards to this shift to park problem. I feel GMC as the manufacturer should be held liable for a faulty part and they have failed to correct this issue in later models since they were aware of the issue with the 2017-2018 Acadia models built in tennessee.

Transmission went out at 4,150 miles vehicle was having hard shifts and slipping.