Leaving work on [XXX], my vehicle started sounding like a loud truck and it started to smoke. I immediately pull over because something smell like it was burning. That's when I call my insurance company to assist me. So, I had it tow to the nearest Mechanic Shop. It was a scary movement for me being along at night. I'm very upset about this had happen to my GMC 2018 Acadia, the Cadillac Converter left is defect. It is not drivable. It's at the shop for least a month. The Mechanic Shop have not received the parts because GMC has a back order. This is to long being without transportation. This is unfair where I continue to pay the monthly bill. Please, I asking to investigate on this matter. I called the Pep Boy Mechanic Shop today and the manager said it still on BACK ORDER. What happen to GMC products? Hope to hear from someone soon! Thanks [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Guyton, GA, USA

The shift to park displays and will not allow the vehicle to shut off. This is the second time this has happened in this vehicle. I have 63822 miles and repaired this same issue about 20000 miles ago. Looked into it and it appeared to be a common issue in this year and model. Looking for some insight on what if anything can b me done.thank you

- Brookfield, CT, USA

Whining noise from rear axle when 4x4 engaged.

- Sidney, OH, USA

The vehicle will not shift into park. This is a common problem with this vehicle, many lawsuits. When you walk away one has concerns that the vehicle is actually in park or not.

- Grundy, VA, USA

Shift to park issue is getting worse. I couldn-??t turn my car off for hours today. The recall is still pending for this and GMC is doing nothing after thousands of class action lawsuits and complaints. Keeping my car running for hours on end while in park because it won-??t turn off is causing electrical issues and using tons of gas. I have to get with an attorney at this point because I can-??t use my car lots of the times because I can-??t leave it running and unlocked all day while I-??m at work or at the store. It-??s a MASSIVE safety issue. GMC needs to take accountability and fix these vehicles. This has been ongoing for 2 years now.

- Bartlett, TN, USA

When I put my car in Park and go to shut it down, it is not recognizing that it is in park, and will not shut down. I have to spend 30 plus minutes messing with the shifter to try to get it to recognize it is in park when it is indeed in park. I have to start and stop my car a number of times to do so. There have been a number of complaints for this over the years and NOTHING has been done with this. This can be a costly repair as I have seen results in a new transmission.

- Millport, NY, USA

The -??steering assist reduced. Drive with care-?? A/C turns off and fan kicks on high. Transmission temp flatlines. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Carson City, NV, USA

When putting my car in park and turn the car off. the car dashboard says to shift the car in park and beeps. I repeatedly turn the car on and off until the car reads it as being in park. or the car will not turn off completely, it will continue to beep, and it will not lock the doors. I have called a GMC dealer about this issue. There is no warning message except to put the parked car in park!

- Phenix City, AL, USA

Vehicle does not recognize that it's in park. Once parked a warning comes on telling you to shift to park. The vehicle does not completely shut off because it does not believe that it is in park.

- Delaware, OH, USA

The thermostat stops working and my a/c stops blowing cold air, and driving assist stops and engine light goes on. It is a rampant problem among GMC Acadias with no reason or fix. Please advise.

- Naples, FL, USA

The vehicle would intermittently display a "Shift to Park" message and sound alert chiming when moving shifter to park position. The car could not be parked until the chiming and message were dismissed by jiggling the shifter, sometimes after a prolonged battery-draining attempt to end the condition.

- College Station, TX, USA

When turning off engine it displays "shift to park" and won't shut off. This has been ongoing since I purchased vehicle but is much worse now

- Volant, PA, USA

Vehicle does not shut off when shift to park. Must put vehicle in gear then shift to park numerous times in order to get the vehicle shut off. Vehicle will not start. Requires numerous attempts applying brake to start

- St Paul, MN, USA

After shifting to park a message comes in screen that is telling me to shift to park I have put it in park so then I have to restart vehicle and move gear shifter back into park sometimes it works on 1st try then sometimes takes extra try-??s to get it to clear

- Ponca City Ok, OK, USA

Shift to park and unlocked shifter knob, the shifter knob is capable of shifting from drive to neutral without pressing the unlock switch on the shifter while driving. Vehicle says shift to park when parking vehicle, car will not shut off or lock when code is up.

- Dexter, MO, USA

Stabilitrak Warning keeps showing up on dashboard as I turn my vehicle certain down certain roads, round abouts etc like my car shifts or makes it hard to control going around/through certain road conditions.

- Conway , AR, USA

When placing the car into park, dash indicated that the car was not in park. So, emergency brake had be utilized until the problem was determined by a GMC dealer rep. When asked, the rep did stated that this problem was happening with these vehicles. Safety of driver or others was definitely put at risk, car could have rolled out of my driveway or if parked elsewhere. Definitely felt unsafe operating this vehicle. This was happening on a regular basis prior to scheduling an appointment, approximately 2 weeks. Appointment was made at dealer and it was determined that floor shifter had to be replaced. Failure to be able to get the car in park indicated as above. This should be a recall and not a financial responsibility of owner.

- Lavallette, NJ, USA

When I put the vehicle in park to exit the vehicle I get an alert on the dash that says to put the vehicle in park. The vehicle is in fact parked but I can't shut it off or lock it. I have searched and found that there was a class action lawsuit but no recall. The dealership keeps telling me that there isn't a fix for the problem.

- Riverview , FL, USA

Water is leaking down back window from 3rd break light. Seal is bad/crushed was never put in right

- Wheatfield, IN, USA

When I put the vehicle in park and then turn off the engine, a warning comes on the dashboard saying -??shift to park-?? and the electronics will not turn off or the lights and I cannot lock my doors. I cannot leave my vehicle until it goes off. Sometimes it is only a few seconds and can go up to a few minutes. I noticed this problem when I bought the vehicle in 2020 and is a recurring problem and is becoming unbearable that want to trade this vehicle in because I do not want to deal with it.

- Oceanside, CA, USA