After parking the vehicle, shifting into park and turning off the engine, a warning message appears stating to shift the car into park. The car is in park, but there must be some type of sensor failure. I am prohibited from completing shut down of the vehicle until I clear the warning message. When this issue first arose, I could "jiggle" the shifter a bit, and the message would clear. Now, about two weeks later, I need to start the car, move the shifter between gears, and then back into park. After 2 - 3 times repeating the procedure, the warning message usually clears. The vehicle has been taken in for service. A new shifter has been ordered. The part is on back order.

- Lumberton, NJ, USA

Every time I park my vehicle. It is in park but a message displays telling me to put the vehicle in park and it will not shut off.

- Carrington, ND, USA

When my vehicle was in park & I was going to turn it off it gave me this message action to park when in park. This has happened several times. I have taken it to the dealership & nothing can be done.

- Midland, TX, USA

When the vehicle is in park, the car displays a message 'shift to park' and will not let you turn the car off. This is causing me to have to turn car on and off and move it from drive to park until it registers.

- Stuart, FL, USA

When parking the vehicle, after shifting to park, the dashboard displays a warning shift to park and will not allow the vehicle to be shut off. The vehicle was stationary on a city street, in our driveway, and also in a parking lot. This prevented me from exiting the vehicle for about 10 minutes each time, will I continued to restart the car, shift from park to another gear and then reshift into park.

- Broomall, PA, USA

When I put my car into park to turn off my car, it would not turn off and said to put car in park. I have to wiggle the shifter, sometimes several times. It happened right before when my car was in around 35,000 miles. They didn't have any appointments that week. I had to go to California the next week. I went in yesterday, since it was over 36,000 miles. They said it was not under warranty anymore. I told them the situation. Said L had to pay $488.

- Kingman, AZ, USA

Vehicle is unable to shift into park. I keep getting an error message to "shift to park" even though I am in park, and it will not allow me to turn the vehicle off. I will have to shift the car into drive and park about 25 times before it will recognize that is actually in park so I can turn off the vehicle. This only happens whn the vehicle is stopped and I am trying to turn it off.

- Hamburg, NY, USA

When placing vehicle in park and turning off ignition, the message appears 'shift to park'. everything is still on in the vehicle, lights radio etc. Sometimes I can wiggle the shift controller and it will disappear or sometimes I have to turn ignition back on and try again to turn off. Sometimes takes several times to get message to disappear.

- Aurora, NC, USA

When the vehicle is parked after driving and the placed in park, the vehicle fails to recognize that is in "park". this causes the interior accessories to remain running as though the vehicle is running even when the engine is off. This happens when the vehicle is stationary. From review of information, this is a know manufacturing defect from GM. When GM was contacted to have repaired in the vehicle we were informed that they cannot warranty their vehicles forever and it would not be repaired. This seems to be an inappropriate response for an issue that is not a warranty item but has been published as a manufacturing defect.

- Zumbrota, MN, USA

I have requested at least 4 times for repair of my car 2017 Acadia. Several caution light on the dashboard comes on including the engine sensor(malfunction indicator lamp). While driving the car it looses power to accelerate. When pressing the gas pedal the car stalls. This issue has happened on both the highway and city. There have also been times when turning into a parking lot I have felt some vibration. Additionally, the car dashboard gives out commands for putting the car in park after it is stationary.

- Kernersville, NC, USA

When the car is parked on a flat surface (inside the garage, parking garage, parking lot), the car will display "shift to park" when it is already in park. The accessories stay on until the driver is able to get the car's computer to notice the car is in park.

- Aurora, CO, USA

The contact owns a 2017 GMC Acadia. The contact stated that the vehicle was shifted into the off position with the engine depowered however, the electrical functions continue to function. The brake assist and steering assist warning indicators illuminated. Discovery Chevrolet Buick GMC (2705 us-421, boone, nc) where the failure could not be diagnosed. The failure was not repaired however, the GMC manufacturer informed the technicians to tighten the tensioner cable to temporarily repair the vehicle. The manufacturer was notified of the failure. The failure mileage was approximately 16,000.kh

- Beech Mountian, NC, USA

Placed the vehicle in park, it was stationary and it rolled forward. Message in the info center said "shift to park". I was parking in a mall parking lot.this has occurred 5 times. I can push the gearshift back and forth and then it can be turned off and the message will disappear. I took it to the dealership and was told they are waiting on GM to see what can be done. It makes a sound when in motion at slow speeds on a city street like the back needs shocks. It seems to bounce more than it should.

- Prescott, AR, USA

The contact owns a 2017 GMC Acadia. While the vehicle was engaged in park with the engine running, it inadvertently rolled away. As a result, the occupant was struck by the door and the vehicle ran over the occupant's foot. Medical attention was required. The vehicle continued to roll away and rear ended another vehicle. A police report was not filed. The vehicle was taken to an independent mechanic where it was awaiting diagnostic testing and repairs. The dealer was not contacted. The manufacturer was notified of the failure. The failure mileage was approximately 3,002. The VIN was not available.

- Paragould, AR, USA

When the vehicle is in park and you try to turn it off with the start/stop button an on dash error code of "shift to park" appears even though the vehicle is clearly in park. You are not able to turn the vehicle off. I took the vehicle in for service on 6/4/18 and was told that GM is aware of the issue however their engineers have not found a solution. This currently is forcing me restart the engine, put my car in reverse, shift back in drive, try re parking and turning off again repeating the process until it eventually turns off. I do not know if my car is truly in gear or not. I'm afraid that it might cause a dangerous situation.

- Portage, MI, USA

A message shift to park kept appearing when the car was in park and shut off. Then I put the car in reverse and the entire care locked up. (a message from GMC -General Motors llc (GM) is recalling certain 2018 Chevrolet equinox and GMC terrain vehicles and 2017-2018 GMC Acadia vehicles. The right front intermediate driveshaft may fracture and separate while driving.)

- Jacksonville, FL, USA

Front right driveshaft separated while driving causing a pull to the right.

- San Ramon, CA, USA

2017 GMC Acadia denali AWD. While accelerating on to a highway, after moving forward partially into a lane, my vehicle locked up and would not move forward. When pressing the gas pedal, a loud griding noise would occur. Weeks later, problem undiagnosed and vehicle still at GMC for repair.

- Claremore, OK, USA

The vehicle shifts very harshly between second and third gears when accelerating. Sometimes it is so harsh that it slams you back in the seat. The dealer says that it is "normal". it began after owning the vehicle for one full year.

- Latham, NY, USA

Harmonic vibration at around 1500 RPM while holding speed any gear or mph

- Melrose Park, IL, USA