When pushing vehicle ignition button "start/stop" to turn vehicle "off" it will turn the engine off but keep the vehicle still "on" using the battery. If I open the door and shut it, the horn honks to alert that the vehicle is still "on" and not completely stopped. The only way to get the ignition button to acknowledge the vehicle is off is by jerking the gear shift until the green light goes to "off". it does not do it every time I turn the vehicle off, but it does it about every other time. I will take it to the dealership very soon for them to look at this also.

- Rock Hill, SC, USA

One day my car started telling me shift to park while it was in park. As the day progressed it became worse and worse. Resulting in the car not shutting off. Putting it into gear and back to park was not helping. The last time it took nearly 30 minutes before I could get the car to shut down completely as it kept staring shift to park. Car was not moving had only gone within city limits with max speeds of 45mph.

- Stafford, VA, USA

When I turn the car off I receive the message shift to park. The car is already in park and I have to shift multiple times for the car to register it as parked.

- Morgantown, WV, USA

The vehicle would display a dashboard warning "shift to park." Every time the vehicle was put into "park" the vehicle would not register that it was in park. This would prevent the vehicle from being turned off. A driver would think the vehicle was in park, and take their foot off the brake, but the vehicle would not register it was in park and would display a warning on the dash "shift to park." You would then have to shift back and forth, from park to reverse or drive and then back into park for the vehicle to finally register it was in park. This would occur while the vehicle was stationary and sitting anywhere you would park the car.

- Bluffton, SC, USA

When I try to shut vehicle off it says shift to park. My vehicle is already in park and I cannot shut it off. It just continues do ding as well and I cannot lock the doors and the lights will not turn off.

- Deland, FL, USA

When putting my vehicle in park and pressing the engine off button, I get an error message "shift to park", and the vehicle beeps and will not turn off the electrical, but the care is already in park. I am unable to turn off my vehicle completely. I have to press start again and put the car in reverse and back to park, sometimes multiple times in order for the vehicle to register that is in park and allow me to shut off my vehicle completely. I am concerned that the vehicle may not actually be in park when I put it in park. I do not want it to roll down a hill and I want to be able to turn off my car without being concerned it will continue to run electrical and kill my battery.

- Prosperity, SC, USA

'shift to park' error message is showing when my vehicle is already in park and I'm trying to turn the vehicle off. I purchased this vehicle less than a month ago and it currently has 33K miles on it. I've had to turn the vehicle back on several times to get this error to go away. When the message flashes I've even experienced the vehicle rolling indicating it is in fact not in park although the shifter is in park position. This needs to be recalled immediately and I will also be consulting an attorney as this is a known issue with no clear fix (many people who have had the shifter replaced are having the same problems again) and the part that needs to be replaced is on backorder. People's vehicles literally cannot turn off resulting in batteries dying among the very obvious safety concerns. How is this legal?

- Ofallon, MO, USA

Car will not recognize I've shifted to park when I turn off the vehicle. It says shift to park when I already have, and I have to start the car and shift again over and over to park for it to work. Very concerned about safety.

- Edwardsville, IL, USA

First of all, this issue is being reported by hundreds if not thousands of GMC Acadia owners. I received the "shift to park" message months ago while it still was under the 36,000 mile warranty and then it went away until last week. I got a "shift to park" message when I turned the vehicle off even though the gear was in the shift position. This caused a number of secondary issues that are now compromising the safety of the vehicle. Once I am able to turn the vehicle back on after it drains or kills the electrical system, I am getting a number of issues. However, the ones that concern me the most are the rolls even though the vehicle is in park, loss of power steering, loss of AWD, loss of stabilitrack, loss of ABS, braking system error and power surges. These are the most concerning but I am also having issues with my dashboard, navigation, and vehicle instruments. I called the GMC dealer who had no problem telling me the gear shift box needed to be replaced, not covered under warranty and they had no idea when they can fix it because it was on a national back order. What really disturbs me is that there are lawsuits going on dealing with this particular issue and that literally it compromises the safety of the vehicle and neither GMC or the NHTSA have acted on this. I was driving today and realized how dangerous it was to operate a vehicle under these conditions. You can literally be driving and the vehicle have a power surge which makes you lose control caused by a malfunction in the gear shift box. I am assuming that no one will due anything until several people are either killed or seriously injured. This issues has been reported on models going back to 2017 and here we are in 2019 and still have the issue. Please help us, this issue is happening to thousands of drivers and it is not being addressed by the NHTSA or GMC. Please recall or stop selling

- Castle Rock, CO, USA

My 2018 GMC Acadia has warning of shift to park. When it is in park. And will not allow me to turn off the car. I feel this is a major issue. This only happens when it is stationary.

- Rockford, MI, USA

GMC Acadia "shift to park". the SUVS fail to detect when the gear shift lever is moved to park. The dash board showa a message on the instrument clusters that says shift to park even though the gear shift levers are already in park. In addition to losing the ability to shut off and lock the SUVS, I was unable to turn the SUV off after attempting to do so serveral times.

- Georgetown, TX, USA

Water leaking in threw back windows, side walls, water coming in there plastic in doors both front and back, water coming in back up under head liner. This all happening after rainfall and the car was parked in drive. This car only has 8,000 miles on it purchased brand new in October 2018 off show room floor, I am the only owner. I have pictures to support all of this as well, including water damage.

- Warsaw, IN, USA

Exploded sunroof - the sunroof exploded when I was not in the car. I heard the glass falling in to the sun shade when I closed the door. Took me several days to recognize and figure out what the sound was. No rocks, no sign of anything falling on the roof to damage. The glass appeared to be pushed out as can be seen on the photos.

- Englewood, CO, USA