My park to shift to park warning keeps coming on. It was replaced under warranty once and came on again comes and goes and dealership is not replace it again saying it isn-??t tripping a code so it won-??t get covered under the parts warranty.

- York, PA, USA

Shift to park caused by a faulty micro switch. Woukd take up to 30 min to get car in park, leading to engine shutdown failures and possibly battery drain I did replace battery before I knew this was causing this. Messages did appear saying this was an issue, must shift to park but no indication of how to do it. I got this repaired at barkley GMC Dec 29:30

- Tuscaloosa, AL, USA

Won't shift into park alert came on. Vehicle wouldn't shift into park. Danger of vehicle roll off? Took to GM dealer who replaced GM part 13545094 transmission controller aka shifter assembly. It is believed this defect was detected and recalled on 2018 GMC Acadia models. My 2019 was made in 2018. In service date 10/04/18.

- Nixa, MO, USA

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.

- Olney, MD, USA

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 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.

- North Salt Lake, UT, USA

Shift to park error message when in park.

- Crandall, TX, USA

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

- Buffalo, MN, USA

I'm going to have to replace my thermostat and most likely my sensor. It will pop up saying (steering assist is reduced drive with care) my temperature gage on my dash will sometimes will not go up, my heat is acting funny. I've had also when I put it in park saying it's not actually shifted into park.

- Blue Springs, MO, USA

Thermostat stuck open and a steering assist light came on engine temp needle at zero. Check engine light came on, Had to have thermostat and coolant engine temp sensor replaced

- Stow, OH, USA

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

- Baxter, KY, USA

When in park the car is alerting to -??shift to park-??.

- Perry, MI, USA

shift to park issues when placing the vehicle in Park

- Cleveland , OH, USA

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.

- Rancho Santa Margarita, CA, USA

I do not have current recall on my vehicle, but my vehicle is experiencing the "Shift to Park" issue that many of the same year make and model mine is experiencing. I am unsure why my vehicle would not have one. It is messing up the transmission and I have only had this vehicle for a year from a dealership. I feel it is unsafe to drive as the vehicle does not always register that it is in park. I can feel the transmission slipping because of this. I would really appreciate some support for this. It is a 2019 GMC Acadia, which is also apart of the other vehicles that are apart of a lawsuit in Ohio and other states. This is a safety hazard for myself and my family.

- Elkhart, IN, USA

The transmission keeps slipping, clunking, and not shifting correctly. Not shifting or down shifting correctly up and down hold or at stops. My husband is a trained mechanic and has confirmed through his place of employment that the transmission is failing. It hasn-??t no yet been inspected by the manufacturer, police, insurance. No warning lamps, but the transmission temp rises to 270F+ In regards to the next question.. the issue is ongoing.

- Penn Valley, CA, USA

Shift to park issue car is in park car is not recognizing it and won-??t turn off accessories

- Wappingers Falls, NY, USA

1. What component or system failed or malfunctioned, and is it available for inspection upon request" The issue was with the gear select switch and jumper harness, related to the "Shift to Park" malfunction in my 2019 GMC Acadia. Yes, the components were available at the time of the repair with the GMC dealer. 2. How was your safety or the safety of others put at risk? The vehicle would not recognize when it was in "Park, " which prevented it from being turned off. This could lead to unexpected vehicle movement or battery drain, and creates a safety risk if the driver assumes the vehicle is secure when it is not. It also poses a hazard if the vehicle cannot be safely shut down in an emergency or in unsafe conditions. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the issue was reproduced and confirmed by a GMC dealer during an appointment on July 22, 2025. They diagnosed the problem and verified that the gear select switch and jumper harness needed replacement. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle was inspected and repaired by an authorized GMC dealer. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" No, a "Shift to Park" warning message appeared and the vehicle would not allow me to turn it off without shifting in and out of park multiple times. This first occurred on July 18, 2025, and continued until the repair was made.

- Peoria, AZ, USA

On my 2019 Acadia, the message shift to park keeps appearing on my dash when I shirt the car into parked. It's getting more frequent and when I called GMC it's a well known problem to where the lady taking my appointment says yes we are aware it's happening alot. They want to charge 800 to fix a problem that should be a recall. It's a well known problem and there has been cases and suits brought up and GMC will not make a recall on this even though the mechanic said I can't believe this hasn't been recalled. Can you help with making GMC do a recall in the Shift to Park. Thank You

- Barrington, NJ, USA

Whenever parking the car and trying to stop (shut off) the engine it will randomly say -??shift to park-?? and I cannot shut the vehicle off.

- Moravia, NY, USA

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.

- Fombell, PA, USA