Equipment Problems of GMC Acadia - part 1

On or about I experienced the check engine light on the above vehicle. After checking, the issue has something to do with the low level in the coolant system. I took the vehicle to a maguire Chevrolet dealership in grand island new york. They charged me $200. 00 +tax for diagnosis. They found the radiator hose was leaking and it isn't covered by the warranty or extended warranty. I took the GMC to another shop for repair. They were told by 3 dealerships the part is on back order and they do not know when it will be in. Just to be sure, I called the GMC dealership in rome new york where the vfw purchased the vehicle. I was told they were put of stock but there wasn't an issue. That was on 12/24/2025. The salesman said he would call me on Friday to verify the status of the hose needed. As of 12/29/2025 at 13:00hrs there hasn't been a call back. My feeling is there must be an issue with the hose in question. The should be a recall and gm should repair the leaking part. Daniel b mcmahon cfo department of new york vfw. Dmcmahon@vfwny. Com 518 414-2605.

See all problems of the 2024 GMC Acadia 🔎.

Pulled into a parking space, put the car into park and tried to shut the car off. The warning system said I needed to shift to park. I was in park but could not shut the car off because the car thought I wasnt in park. Took 15 minutes of shifting from park to all gears and shaking the gear shifter before it finally let me shut the vehicle off. This is now the second time this has happened and ive had to have the same thing repaired. They are replacing the whole shifter assembly. Error reads shift to park. This is happening every few years now and at almost 1000 dollars to repair and only lasting a year or so, this is ridiculous.

See all problems of the 2017 GMC Acadia 🔎.

The upper radiator hose, which is part of the vehicle’s engine cooling system, failed prematurely. The component is available for inspection upon request, and documentation of the repair and replacement can also be provided. Failure of the upper radiator hose caused coolant loss, creating a risk of engine overheating and sudden vehicle disablement. This posed/poses a safety risk, particularly if the failure had occurred at highway speeds or in traffic, where an unexpected breakdown could endanger the driver and surrounding vehicles. The issue was confirmed by an authorized GMC dealership, which diagnosed the failed upper radiator hose and performed the replacement. This issue has also been reported by multiple owners of the same model year, indicating a recurring problem. The vehicle and failed component were inspected by an authorized GMC dealership. No inspection by police or insurance representatives was required, as this was a mechanical failure and not the result of an accident. Prior to the failure, symptoms included coolant loss and cooling system concerns, which ultimately required dealership diagnosis. Any warning indicators appeared shortly before the issue was identified, with little to no advance warning before the component required replacement.

Shift to park issue - this is a know issue/recall for the 2019 GMC Acadia yet it when I enter my VIN number the recall doesn't show up as a problem. Yet it took me 10 tries yesterday to try and turn my car off because each time I went to turn it off, I got the message to shift it to park. This has been occurring weekly since I purchased the used car in August 2025.

See all problems of the 2019 GMC Acadia 🔎.

There are 2 issues im experiencing. The first is the vehicle won't allow me to shut down the engine because it doesnt recognize that its been shifted into "park". Ive already paid close to 800. 00 to. Have this repaired because my model year is not covered in the recall. Today, it started doing it again. The safety issue is that either I, my wife, or my teenage daughter (depending on who is with the vehicle). Can be left stranded, unless we pop the hood and disconnect the battery. The second issue is that the tire pressure monitor is no longer working. It is sending warnings that our tire pressure is low. When its not. The safety issue is needing to pull to the side of the road to check the tire pressure and also not knowing when the vehicle may actually have a low tire.

I accidentally ran out of gas and my car died directly underneath a railroad crossing arm. I had been stopped to allow an amtrak train to go by and my car died when I started to move forward after it passed. Thankfully I wasn't on the tracks, but I was close to them. I immediately got out of my car and the woman behind me said she would help push me out of the way of the crossing arm. I went to put my car in neutral, something I do weekly when I go through the car wash, but my dash kept saying "conditions not correct for shift". I tried repeatedly and it would not allow me to put the car in neutral because I couldn't fully turn it on. I did a quick search online and found there was no information on how to get it into neutral if the car is dead. My battery was still working and my car was in accessory while I was trying to change gears. I had to call 911 and they had to reach out to bnsf to alert incoming trains. It was an ordeal. I spotted a tree removal company across the street and they had a can of gas for me to use. I was able to partially fill my tank and then drive across the tracks before a train came. Afterwards I called the dealer and we discovered together that there is no backup safety feature that allows a disabled car to be put into neutral. The dealer was just as surprised as me. This seems like an obvious safety issue if a car is to break down on train tracks, the middle of the freeway, or in an intersection. I don't understand why it is allowed and why dealerships and the public are seemingly unaware of it.

After I put my car in park my daughter and I were still in the vehicle for a few minutes getting our things with the engine still running. I got out to get something from the back seat, my daughter got out the passenger door and made it to the driver side as I was closing the back passenger door. I was about to get back on the car to get the rest of my things and turn the ignition off but before I could my car was rolling backwards out of the driveway into the street. I was able to jump in the vehicle and put my foot on the brake and the put the gear into park. There’s no way possible I didn’t put it in park with me getting out already and my daughter couldn’t have accidentally shift the gear because she couldn’t have been able to get out, close the door and make it to the driver side before it started rolling away. Once I got the car stopped, I noticed the driver seat was now all the way to the steering wheel and completely to the floor with the headrest also tilting inwards and now the electrical for the seat will not work. There is a recall for this issue but my VIN# is not included. I cannot even drive my car now because the seat is so far up and inclined. What if the seat moves up more while I’m driving and it has me pinned between the steering wheel and the seat. I don’t feel safe driving it, having my daughter as a passenger and it’s really not safe to be on the road. I’m still paying on this car and now I won’t even be able to drive to work. So I’ll probably lose my job. This car has multiple issues and I think is an electrical problem. It’s also a known major defect on this model but still not a recall for my VIN #! none of my interior sound works. Speakers, blinkers, alerts, back up camera. The auto start won’t start, I have to press the key fob multiple times to lock and unlock. This car is extremely unsafe to drive and I strongly feel my cars VIN# should be listed under the recall. Its going to really affect my daily life and means of income. Lemon!.

See all problems of the 2014 GMC Acadia 🔎.

When in park the car is alerting to “shift to park”.

Coolant temperature gauge stops working and shows cold temperature reading. The radiator fan runs for about 2 minutes as if the engine is overheating. I think it's a temperature sensor issue or thermostat issue or both.

See all problems of the 2022 GMC Acadia 🔎.

I was driving on a two-lane road when unexpectedly my front moonroof spontaneously shattered sending glass down on top of me, the console area, and the passenger and rear seating areas of my 2025 GMC Acadia. It happened without warning and no external factors. It was a pleasant sunny November day. The moonroof was not open at the time. Fortunately no one else was in the vehicle with me at the time and no other cars were nearby since the two-lane is not a heavy traffic area. This put my safety at risk and could have put others at risk had others been in the vehicle or nearby since I was startled and had the natural reaction of crouching over and down in an attempt to protect myself therefore taking my eyes off the road and not paying enough attention to driving the vehicle. Glass could have fallen and hurt other passengers. The remaining moonroof glass crackled and I then looked up in shock wondering what happened and then feared glass fall into my eyes and immediately looked down away from the moonroof. I had just left my residence before the incident and was less than two miles from home. I found the next available place to turn around and drive back to my home and exit the vehicle. I then called the dealership I bought the vehicle from in January 2025, new. I also called gm customer service to seek assistance. The vehicle has 7125 miles. There were no warning signs. The incident happened today and no one has inspected the vehicle and its damage. A customer service case was opened with gm. I sent pictures to the dealer service manager who said he attached the pictures to my gm case online.

No specific incident. High pitch rattling in ceiling. Does not seem to be coming from the sunroof but the middle light fixture.

Vehicle is in park, and the shft sensor does not recognize the shifter is in park. Won't let you turn off rhe car.

Vehicle has an ongoing water leak, has been to the dealer twice so far. Both times said it was fixed.

I continue to get a message "steering assist is reduced drive with care " this appears to be a very common issue with my vehicle model. It is very expensive to fix. I am just outside of warranty so it is not covered. Online indicates this is so common. It is the vehicle thermostat and sensor prematurely going bad.

See all problems of the 2018 GMC Acadia 🔎.

Shift to park error message when in park.

The put in park shows after engine is turned off, have to restart and shift out of park and back to park. This could take several times to accomplish.

GMC customer care representative & local GMC service department supervisor unable to help. 2017 Acadia shift to park message. It’s difficult to turn the car off. The vehicle refuses to acknowledge the park position. Potential rollaway hazard. You may inspect. Took it to GMC service & confirmed it is a prevalent issue: transmission control 13534320 = gearshift assembly & jumper harness 84733196. This problem has been recurring for several years and I have problem solved how to shut the car off. GMC customer care rep said it’s an issue with all 2017 Acadias and tried to help. The system deemed it complicated case & escalated it to a supervisor. She read a “customer care” script. After talking, she admitted that realistically GMC would not help. Yesterday, she advised me to file a complaint with NHTSA. I read that 2 other states ohio & tennessee won class action lawsuits because of the hazardous shift to park issue. If GMC issued recalls for 2017 Acadia shift to park then my 2017 GMC Acadia should have been included. I have been waiting for the recall for several years. GMC admits the problem is prevalent in 2017 GMC Acadias. Would you please issue a recall associated with this issue and link it to my VIN. Thank you.

I purchased this 2025 GMC Acadia on 3/29/2025. About a week into owning it, the navigation stopped working. Onstar was able to reset my system. Then, about a month later, the vehicle locked my keys in the cabin without my knowledge. Onstar was able to unlock my vehicle remotely. Then, on 10/23/2025, I noticed my navigation was not showing my true location. I tried the google assistant, and it wasn't connected. After further investigation, my wifi hotspot was not working either, along with other connectivity apps. I researched how to manually reset my system and followed all prompts; that did not fix the problem. I pressed the onstar button, and nothing happened; no connection. I thought that maybe the vehicle needed to cycle a few times. I let this continue for about a week before calling onstar from my phone. They told me to press my sos button; if it didn't connect, then I would need to take the vehicle to the dealership. So I took it to the dealership 11/6/25. They tried to download the update to my vehicle multiple times, over 6 hours at the shop, and the vehicle wouldn't accept the update. It is determined that the onstar telematics control module is defective. The dealership says the part is backordered, and they do not have an eta for arrival. After perusing the gm/onstar forums, I am seeing that this is a repeated issue for many customers on vehicles as old as 2018, and the part doesn't come for 6 months or more in most cases. It does seem more prevalent with vehicles 2022-current. The issue here is that onstar is touted as a safety feature, and I have been given 3 years of free onstar service. I am unable to utilize the service (roadside assistance, accident assistance, and navigation) and many other features because of this. Gm is aware that this is an issue, and the module is backordered when it should be readily available, since these issues seem to be commonplace. My brand new vehicle should work without issue and should be repaired promptly.

Message with “steering assist reduced, drive with care” pops up on the screen. The temperature gauge drops to on the cold side. After you shut off the car the fan will run for 10 minutes trying to “cool” the car. The temperature cannot regulate.

I have owned this vehicle less than 5 years and it has had the "shift to park" error 3 times and has now been replaced 3 times. The 2nd time was in August 2023 and yesterday it had to be replaced again. I don't understand how a part can fail this rapidly when the vehicle is only being driven approximately 10,000 miles per year. It only has 82,445 miles. I would like for gm to issue a recall for this issue or advise who the manufacturer is of the switch part number 84955381 and harness part number 84733196. The parts are not that expensive but the labor to replace was $ 462. 50 and total parts was $ 55. 56 on the invoice yesterday. As this is an ongoing issue I would like reimbursement. I am widowed and living on one income.

Recently took vehicle for alignment for a pull to the right. After 3 alignments at the dealership I was told the rack and pinion gear sensor shorted out causing the vehicle to pull to the right. Also the exhaust has a rattle in the resonator confirmed by 2 sources. I asked the dealer to fix years ago under bumper to bumper and TSB pit5863. I was told not enough techs and not enough time so now the warranty is expired and the issue isn't fixed.

See all problems of the 2021 GMC Acadia 🔎.

My Acadia has the shift to park default it has been fixed 3 times and now it is popping up again for the 4th time which means I can't turn my vehicle off it takes forever to get it to go off please help please help.

The rear view camera fails to function intermittently and is occurring at a higher rate of frequency. On numerous occasions when the vehicle is put in reverse the screen goes black with a red triangle caution symbol and a white camera crossed out. Now the system is unavailable more then operational. Based on the drivers rear vision when backing in this particular vehicle, the lack of the rear camera view increases the risk of crash. This also increases the risk of severe injury to a pedestrian behind the vehicle. The same issues were addressed on earlier models via a safety recall which should be extended to 2023 model.

I have a 2021 GMC Acadia that keeps saying steering assist not available. But when it does this, the temperature gage stops working and so does the ac. After you turn the car off the fan still runs for at least 10 minutes.

Vehicle is showing message of “shift to park” while trying to turn ignition off and currently in park. There is a current recall but it is saying this vehicle is not included in recall.

Approximately 2 months after purchase, the sunroof spontaneously shattered/exploded while driving on the interstate. We had it fixed and about 3 months after that, the same exact thing happened.

I bought a car about 2 months ago and they did not tell me the thermostat was bad and they won’t cover it.

I have had multiple sensor issues with my Acadia since reaching 60000 miles. Currently, there is a thermostat sensor causing hard shifting, no cold air blowing from the ac, stabilitrack, traction control, steering assist reduced and fan running after turning off. I would not report it but I am in a facebook group where multiple people are reporting having the same issue in their Acadia's.

The transmission in my 2017 GMC Acadia needs to be replaced. According to an article from qulll&arrow, llp, transmission problems affected the 2017, 2018, 2019 and some 2020 models, however, my VIN number is not included in this. I am reporting this so it can be documented in case other owners come forward and a pattern can be established.

Vehicle has shift to park message, and will not allow the vehicle to shut down even though the vehicle is in park.

We purchased the vehicle on August 20, 2025. At which time we paid over $4,800 for the vehicle. I will be trying to submit all files pertaining to the vehicle. We are both disabled and on the fixed income from ssi. However, a week after purchasing the vehicle all issues began to rise up. There was no transmission fluid, the oil need changed, catalytic converter showed up on autozone print out, wheels to make a sound when turning, brakes needs fixed, electrical seems to have an issue. The reason I am submitting this is in prayer asking for any remedy with this situation through the recalls, bulletins, and whatever else maybe available for the vehicle. I thank you for your time, effort, and consideration in this matter.

See all problems of the 2011 GMC Acadia 🔎.

Unknown.

When I park and then turn the car off the car fails to recognize that the gear shifter is in the park position. As a result, the car doesn’t fully shut down, leaving the engine running or the electronics active. This drains the battery. I have seen this issue is recalled for other 2019 Acadias but don’t under why it is not recalled in mine. I’m afraid I’ll be out and about and unable to turn my car off resulting in a dead battery and being stranded.

Check engine light comes on, temperature gauge stops working, driving assist reduced notification, engine fan runs on high only. Temperature gauge and sensor were replaced 27,000 mi ago when this happened before.

When the vehicle is put into park and I turn the vehicle off I get an alert on my console saying "shift to park". I called gm customer service and was told "harness" had been replaced in 2020. I bought the vehicle in 2021. Last year I had to replace the "harness" and it is doing it is now doing it again.