2019 GMC Acadia Electrical System

Parts # 84733196 Harness ASM-TRAS CONT WRG and 84955379 SWITCH ASM-TRNS CONT have been replaced three times. This is described by dealer as a faulty PARK SWITCH. When this switch fails the vehicle is unable to be shifted to park. Vehicle needed to be located in a level position, wheels chocked and battery disconnected to safely disable the vehicle. Dealership and General Motors has been made aware of problem won't do anything, other that have me pay for the labor and new part to fix it, AGAIN. There is no warning ,it simple decides to fail to shift to park.

The Shift to Park is not recognizing when my car is in park and continues to ding and won’t let me turn my car off.

When parking the vehicle the electrical system will put a warning on the dash indicating you are not in park. A message indicates shift to park. The car will not shut off and you cannot lock the vehicle. This happened when I first bought the vehicle and it was under warranty and repaired. It is now happening a second time in 2025.

When DRIVING the center console screen begins to glitch. It will begin to move around and try to connect to the internet, begin to track navigation, connect to my phone and make calls, or it will just started moving back and forth from the different screens. It also makes sounds while it is glitching. It's incredibly distracting when I am trying to drive. There are a number of online forums that have identified the problem in their same year, make, and model of vehicle. There were no warnings or messages prior to the problem. It presented itself about a year ago and I have just been resetting the battery as a temporary solution.

AFTER PUTTING CAR IN PARK AND TURNING ENGINE OFF, SHIFT TO PARK WILL APPEAR ON DASH- CAR ALREADY IN PARK .

Failure to be in park alarm when shifter is in park. Must play with shifter back into park to stop alarm bells and notice on dash. Supposedly there was a recall issued however not shown on this site per my vin #1GKKNXLS7KZ107842. Very irritating, please advise.

Vehicle's "SHIFT TO PARK" warning is often displayed when vehicle shifter is in PARK and then the engine is turned off. Often takes several attempts to correct the problem by restarting and turning off the engine or by manipulating the shift lever while in PARK. These is a current recall for this issue with the same year, make, and model of vehicle. Checking the VIN against the NTSB recall list shows this vehicle is not included in the recall.

When I park my car it beeps and says my car is not in park. Many other models of the 2019 GMC Acadia, along with other GM vehicles, may be affected by a "shift to park" recall. This recall addresses a defect where the vehicle may display a "shift to park" warning message even when the vehicle is actually in park, potentially preventing the ignition from being turned off and the key from being removed. This is exactly what my car is doing but they say my VIN is not included in the free fix. I brought my vehicle after it died to a GMC dealership and they said it will cost 1,000 to fix. My safety is at risk because I drive to different locations as a therapist and I often drive home at night in remote locations.

I have had intermittent issue with a message to shift the car to park when I shut it off. It was in park. If I wiggled the shifter it would often correct. That went on for a few years on and off. Lately it was more persistent. I brought it into the dealer and they replaced a harness and a switch. Seems that a harness would not go bad unless it had a manufacturer defect. I have seen a lot of reports on this issue on online blog sites. Seems to be a common problem. The problem with this defect is that when it is sin that mode, you cannot safely secure the vehicle and warning bells keep ringing. So the vehicle cannot be left like that and expect it to be secure.

July 31, 2025 Our 2019 Gmc Acadia would not shut off in a parking lot, I was 45 minutes from home. A message on display says shift to park. This is a safety concern as the vehicle might not be fully secured in park, the vehicle won't shut off and will drain your battery. There is an ongoing class action lawsuit related to this issue, alleging that GM has been aware of the problem for some time but has not provided a satisfactory fix according to Lemon Law Auto Fraud. I called the gm dealer and they quoted me $500 to fix this issue.

I would park my car and try to turn off car. The car would not turn off. The car continued to ding the car remained on. The safety issue is the car wouldn't turn off. After many many times shifting from park to drive it would finally park, this happened every time using the car. I discovered the same exact issue is a recall on 2017 & 2018 GMC Acadia our exact car ! Called the dealer explaining SHIFT TO PARK issue. Brought the car to Buick GMC of Mahwah they noted in fact it was SHIFT TO PARK issue. Two days later came in for the car they would not cover problem. Cost $950.00 for exact recall the 2 years prior. Also, contacted GMC corp. they were no help just said had no recall. Our car is 2019 Acadia with 27,236 miles.

I randomly get a "shift to park" warning even though the vehicle is in park. It looks like there has been this same issue with older years but not my vehicle according to the VIN.

When I park my car and go to turn it off, it says "Shift to park". The dash indicates that it is in park and it will not allow me to turn the ignition off or lock the doors.

Vehicle does not know it's in park. Can't turn off vehicle. Must shake or beat the shifter knob for vehicle to see it's in park.

The contact owns a 2019 GMC Acadia. The contact stated that the battery, the steering, and the brake warning lights were illuminated. The contact contacted Triple A, who tested the battery, the starter, and the alternator and jumpstarted the vehicle. The vehicle was taken to the local dealer, where it was determined that the battery had discharged and needed to be replaced. The dealer informed the contact that diagnostic testing could be performed after the battery replacement. The contact stated that the battery was replaced four times; however, the failure persisted. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 3,000.

Shift to park will not work. Sometime after 20 try’s it may work once but I have to disconnect the battery to turn off the car. I’m beside myself and cannot keep doing this. This is a real safety problem. I have children in my car and Gm says there is no recall and I am expected to pay 800.00 and then it is not guaranteed.

When I put my car in park and try to turn it off, the dash shows an error message "SHIFT TO PARK". The car will either not turn off the ignition or allow me to leave the vehicle or lock/unlock the doors. It alarms incessently--even when trying to move the shifter around. Takes several times of restarting and shifting to get it to clear so I can put it into park and exit the vehicle. Local dealer is charging me over $2000 to repair the transmission control shifter assembly; BCM low signal; in-line shifter wire harness jumper--exactly one month after my warranty expired. It's a KNOWN Acadia (and other GM vehicle) issue--per several bulletins--NA-19-206 as an example.

My car is saying it’s not in park when it is in park.

After raining door locks on every door will not work. Won't lock or unlock, manually or by using the key fob. Something seems to be getting damp and shorting out . After a day or 2 the locks will work just fine when everything dries out.Seems to be a safety issue if I can't exit the vehicle. The rear hatch is the only door that works when this happens. What is the problem and the solution? This happens every time it rains. Had it to the dealer and they couldn't find the problem.

Vehicles shift lever doesn't always go into "PARK" and when the 'stop' switch is pushed the instrument panel displays notice to "shift to park" even though the operator has already done so. The audio still plays after the vehicle door is opened. So I assume the vehicle is still using battery power.

The vehicle would continuously not register as being in park.

There have been no reported recalls yet my vehicle is on it's third battery since purchasing it? How is this possible?

My 2019 GMC Acadia started having the known "Shift to Park" issue that is affecting these make/models. This is a known issue and GMC has not issued a recall for it, nor are they covering any cost of repair. When the car is put into Park, the screen displays a message that says "Shift to Park". This results in being unable to turn the car off. The vehicle will not lock either when the message is displayed. On several occasions, the car would not start because of this issue. We took it to the dealer and they are fixing the issue for just over $500 USD.

The vehicle’s steering assist reduced, drive with care notification came on. The vehicle lost steering assist control and made it very difficult to steer. The slightest move causes a major shift in the intended direction. This is very dangerous.

The contact owns a 2019 GMC Acadia. The contact stated while attempting to start the vehicle, the vehicle would not start. After several attempts, the contact was able to restart the vehicle however, the vehicle inadvertently stalled. The vehicle was towed to the dealer and the battery was replaced. On another occasion while the contact shifted the vehicle into park, the contact heard a beeping sound coming from the vehicle. The vehicle was taken to the dealer, but the vehicle was not diagnosed. The manufacturer was not contacted. The failure mileage was 28,000.