Vehicle will apply breaks abruptly on its own whenever it thinks a vehicle is too close. Was in traffic and it kept slamming on the breaks as I would try and move forward. Will slam on the breaks whenever I attempt to just slow down during the course of driving. Was on the highway and anytime I pressed the breaks to slow down, automatic breaks would slam down breaks on its own. Drove vehicle right to dealership as the was a major safety issue for me especially with my baby in the car.

- West Columbia, SC, USA

I put the car in park and the push button start would not let me turn off my car. I sat in the parking lot almost 30 min, putting my car in park, then drive, then park for my car to recognize its actually in park to turn off. I started getting this error on the start and stop at lights... it never turned off during the start and stop but fearing my life or my families life.... I took it to my local GMC dealership and the manager from the Service department said this is a common issue with this model, he has repaired HUNDREDS of them. His words. This is a safety issue.... I am shocked this has not been recalled. The lack of urgency to get this fixed is very concerning. It costs my $708.92 to fix this issue. I 100% think i am owed this money due to something that should 100% be recalled. I found an open class action lawsuit that was confirmed by the dealership to be the exact same issue I had. https://topclassactions.com/lawsuit-settlements/consumer-products/auto-news/gmc-class-action-alleges-acadia-shift-to-park-defect/

- Mckinney, TX, USA

4-11-22 Wife and I drove from our house to the corner intersection. She put the breaks on and the pedal went to the floor and the car drifted into the intersection, across the street to a parkin lot and then we costed back to our house and had it towed to the local GMC Dealership. Asked for meeting with District Service Manager as I had paid to have vehicle fixed for my use. 5-3 and 4-22 Customer Service in MI agreed that it was a safety issue but out of warranty for brakes. Ok for brakes to go due to wear. 5-16-22 Gave District Service manager (PIE 0458 dated 3-22-18) which reads: "Brake pedal goes to floor with no external sign of a leak" GM KNEW. District Manager helped financially. If we had been in a car crash and died it would have been labeled we ran a stop sigh not that GM willingly put a possible death trap into the publics hands. Sending this because others may have been misdiagnosed concerning a crash. A PIE was issued but no Bulletin was issued

- Lockport, NY, USA

my car parking brakes will automatically come on while I am driving/ at a light or waiting to turn. I always push the brake pedal all the way down to decompress it and it is still hard to get going. This has put me in very dangerous situations causing my suv to lose power and often times if I am in the middle of a turn it locks up and make it hard to turn. I have took my car to the dealership twice and they have looked at my car and seems to not found a problem

- Chattanooga, TN, USA

The ABS system indicated a problem. When I took it into the dealership, they told me the ABS was bad and needed to be replaced.

- Smith River, CA, USA

I don-??t know what is going on with it. I have had it in and out of the shop. My car will randomly throw the parking break on and completely lock my car up. There is no reason why it should be on. The dealership thought it could be the systems needing a update but that didn-??t fix it. It-??s a real big safety issue and needs to be looked into. It just did it to me crossing over rail road tracks and I couldn-??t go anywhere until it decided to unlock.

- Sallisaw, OK, USA

The contact owns a 2017 GMC Acadia. The contact stated that the vehicle was stopped at a certain railroad track crossing when the railroad crossing stop signal was activated. Once the train had passed, the vehicle automatically applied the brakes intermittently while attempting to drive across the train tracks. The failure had occurred on several occasions. The vehicle was taken to opeequon motors located at 838 E. moler ave, martinsburg, wv 25404 however, the mechanic was unable to duplicate the failure. The cause of the failure was not yet determined. The manufacturer was notified of the failure. The approximate failure mileage was 29,000.

- Martinsburg, WV, USA

This occurred while pulling into a parking space in the afternoon on March 12, 2021 at approximately 2:30pm.... upon depressing the brake pedal the pedal went all the way down and the car lurched crashing into a light pole. Fortunately the light pole prevented me from hitting another car in the parking lot. My airbag deployed slamming into my chest and I managed to put the vehicle in park. There was extensive damage to my GMC Acadia and aaa and my insurance were called and the car was towed to a collision shop as instructed by my insurance. I am presently awaiting calls from my insurance and the adjuster. This is Saturday and nothing has happened yet. I'm very disappointed in the manner that the vehicle performed and I'm still having chest pains where the airbag hit me.

- Rio Rancho, NM, USA

With vehicle parked I get a message of shift in park and vehicle doesn't fully turn off. It is known as an issue for GM vehicles - bulletin issued.

- Bloomfield Hills, MI, USA

Although in park, the dash alerts the following message : 'shift to park' this alert does not allow the vehicle to be shut off fully as the radio still plays, lights remain in and the dash remains lit. Have tried to restart and shift into different gears then return to park as well as engage the emergency break. Nothing works to fix this.

- Lake Park, GA, USA

When I pull in somewhere and shift my car into park and then go to press the button to turn it off I get an ' action required message' on the cluster to shift to park even though it is in park already and it shows on the cluster that it is in park. I took the car into the dealership to repair the recall and have it serviced while it was there and informed them of the issue and to get them to check it out. They said they were not sure what it was but it kept throwing a low voltage code. But when the battery was checked it was fine. They found a bolt loose or missing on a battery cable at the junction box and replaced it and said that they thought that was the problem. But the problem returned a day later when I was on a trip to nashville. While in nashville I again went to the auto parts store for my daughter and pulled into park and got the same ' shift to park message when I was already in park. The cluster on the dash showed that I was in park. I got out to go ahead and run into the store and when I came out my car had rolled backwards across the parking lot to the curb. Luckily it did not hit anything but the curb and stopped. This problem is so dangerous and concerning to me. It is going back into the dealership to get checked again. I did find a youtube video explaining what the problem was in the shifter and why it was not recognizing that the car was in park. Look in the search bar for GMC Acadia shift to park problems. I feel this needs to be a recall so no one else S car ends up hurting someone. I have no video of this happening because the cameras at the auto parts store were not operational and no one was around when it happened to see it but me.

- Fort Walton Beach, FL, USA

On Saturday, April 11, 2020 the ebcm, electronic brake control module, set off a parking brake dashboard light caution. The parking brakes no longer engaged. Believing it was a certified warranty issue, I had it repaired, april14, 2020, at burdick Chevy GMC Buick. Turns out it is considered a 'wearable part' and not covered. Two days later, April 16, 2020, I discovered the ebcm module recall on similar vehicles, attached ap article. Since April 16 until April 23, I attempted working with GMC, and the dealer, obtaining reimbursement to no avail. Therefore after reading the the article, the dealership, and four different GMC representatives, I request an investigation whether this ebcm module issue is the same as the article. Thank you.

- Liverpool, NY, USA

Low brake fluid light comes on and brake fluid was actually low with no signs of leaks. Filled brake fluid and 3 days later is was low again and still no signs of a leak.

- Greenville, IL, USA

2017 was in garage for 1 week. When tried to start vehicle low brake fluid light came on. Checked brake fluid level was below normal level. Checked under vehicle and all brakes, no sign of any leaks.

- Wappingers Falls, NY, USA

I attempt to place my Acadia into park and power down my vehicle only to get a "shift to park" error message. I am unable to power down my vehicle and not fully park my vehicle even though I have parked it. This occurs daily and has occured 15-20 times in 1 attempt to park. I have to attempt to turn car back "on" and then put car into drive or reverse driving about a foot or so than attempt to repark my vehicle. Only to have to repeat this step over and over til it finally disappears. GMC customer service associate claims they are unaware of the issue. Of course this issue only occurred after my vehicle warranty expired.

- Zion, IL, USA

The contact owns a 2017 GMC Acadia. The contact stated that while the vehicle was parked with the gear shift lever in the park position, the brake pedal was released and the vehicle rolled backwards. Additionally, the contact stated that on several occasions the contact was unable to turn the vehicle off. On one such occasion it took 24 attempts to turn the vehicle off. The contact stated that the failure was intermittent. The vehicle was taken to bergstrom Buick GMC of green bay 3330 located at 301 N taylor St #101, green bay, wi 54304, (800) 721-1840, to be diagnosed and repaired. The technician replaced the entire shifter assembly was replaced however; the failure recurred. A secondary repair was performed with the shifter assembly wiring harness being replaced. The manufacturer was informed of the failure. The approximate failure mileage was 20,000.

- Green Bay, WI, USA

With my vehicle stationary and shifter in the park position, I turn my car off and the vehicle turns off but the instrument cluster says "action required - shift to park". this message also does not allow the day time running lights to turn off and if the lights don't turn off the battery drains if parked for long stretches. I have to turn the car on/off several times before it engages and the message disappears.

- Maspeth, NY, USA

The contact owns a 2017 GMC Acadia. While driving approximately 25 mph, the brake fluid low and brake indicators illuminated. In addition, the brake pedal traveled to the floorboard and did not stop the vehicle. The vehicle was taken to Suburban Cadillac of troy (248-643-0070, located at 1810 maplelawn dr, troy, mi 48084) where it was diagnosed that the master cylinder failed and caused brake fluid to leak into the booster pump. The manufacturer was made aware of the failure and the contact was not called back. The vehicle was not repaired. The failure mileage was approximately 37,500.

- Bloomfield Hills, MI, USA

I was driving my 2017 GMC Acadia on the highway with my son in the vehicle when it slammed on the brakes for no reason. When I first took it to the dealership they did not believe me. They researched the issue then informed me that GM was aware of the "phantom braking" problem and issued a bulletin to the dealers. They said the way to fix it was to reboot the computer. They would not give me a copy of the bulletin that showed the issue or the fix. GM knew this was happening in their vehicles and they did not tell the car owners. It is a miracle that it did not cause and accident and that no one was hurt or killed. I do not feel safe driving this car but they will not let me out of my lease early.

- Lafayette Hill, PA, USA

The break lights would stay on after parking the car resulting in a dead battery in one occasion. The dealer has replaced break parts two times and even kept the car for one week for safety reasons. The problem is back and scheduled for service on 10/14/19.

- Roanoke, VA, USA