2017 GMC Acadia

The contact owns a 2017 GMC Acadia. The contact stated that after parking the vehicle and shifting to park(P), the vehicle failed to shut off when the START/STOP button was pressed. The cause of the failure was not yet determined. The manufacturer and local dealer were contacted regarding the failure, but no assistance was offered. The failure mileage was 36,000.

I was traveling at the posted speed limit of 80 mph on [XXX] in South Dakota at [XXX] and the GMC Acadia was working without any issue when all of a sudden various warnings flashed on the dashboard with one of them being power saver mode engaged. Within about 3 minutes various other warnings flashed and the vehicle motor turned off along with all of the electrical systems. Luckily, I was able to maneuver the GMC Acadia to the shoulder of the highway safely. The vehicle would not start and for about a minute or so we were trapped in the Acadia. We could not unlock the doors or wind down the windows until I pressed the start/stop bottom several times. Onstar did not work either. Once we could get out of the Acadia, my wife called 911 and in roughly 20 minutes or so, a police officer arrived at our location. We also called AAA and had a tow truck take the broken down GMC Acadia to a garage for repairs. It turns out that the alternator went bad and rendered our GMC Acadia useless in roughly 3 minutes from the initial warning. There was absolutely none of the tell tale warnings of a bad alternator. We did not see or observe any dim lights, hesitating starts or any other things associated with a bad alternator prior to the 3 minute warning before the vehicle completely was inoperable. We are very lucky to be alive. If [XXX] was more congested with traffic at the time of this incident, we might have been serious injured if not killed. IMO this GMC Acadia is a death trap. This vehicle warns the driver when the key fob’s battery is low many weeks before it needs to be replaced. It should warn you more than 3 minutes if not several hours prior to the vehicle being completely immobilized. It should be noted that the check engine light came on several hours before this incident and I called Onstar and they ran the diagnostics and returned a P0420 code which is related to emissions. The check engine light turned itself off about 1 hour before incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMAT

For over 2 years now I continue to receive "shift to park" message when I am already in park and trying to turn off vehicle. I can't shut off and have to shift to reverse and/or drive then back to park several times or shove the gear shift towards park for it to finally detect I am in park. I have been setting parking brakes out of fear vehicle will roll due to this issue. Yet, even with all my maintenance, if it doesn't happen during oil change or tune ups dealer nor repair shops aren't diagnosing and issue.

I don’t know specifically what component but feels like drive stuff. Yes it is available for inspection upon request. Driving during acceleration while entering highway vehicle started to surge or shutter almost total loss of vehicle acceleration and slowed down almost causing the vehicle behind me to hit rear of my vehicle. Mechanic says transmission issue and can be reproduced at times. Symptoms are gradually getting worse. No light other than tire pressure sensor.

2017 GMC Acadia "shift to park" known failure. When you place the vehicle in the park position, mechanically it seems to be in park but the control says shift to park. When traveling long distance from home you can find yourself in a position where you cannot leave your car. You cannot lock it or turn it off properly. This is an ongoing problem known to GM and listed in many Technical bulletins including Bulletin No. 19-NA-206 date September, 2019. A recall should be issued for this problem. We found ourselves stranded hundreds of miles from home with a vehicle we could not shut off or secure. This may cause you to leave your car unattended, unlocked and running if you cannot get it to park and shut down.

Incident: the drivetrain shudders and experiences hesitation while attempting to accelerate, and car surges forward when breaking due to what seems to be an issue with the tranmission. This present concerns with potential stalling while driving or the car surging into other vehicles. No indicator lights or error codes are displayed. The presence of this problem in multiple GM vehicles is confirmed by service bulletin 18-NA-358. The safety concern related to this defect should warrant a manufacturer recall to fix the know n defective parts. The vehicle has not yet been repaired. Will request to retain defective parts for inspection upon repair.

The contact owns a 2017 GMC Acadia. The contact stated that upon reaching her destination and shifting the vehicle to park, the vehicle failed to recognize that the gear shifter was in park(P). As a result, the vehicle displayed a warning message reading, "Action Required - Please Shift to Park," and the contact was unable to lock the doors until the failure was resolved independently. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 44,000.

Vehicle frequently shows the error "Shift to Park" when I attempt to turn off the car after it is placed in park - which is confirmable via the instrument panel. The vehicle electronics will not turn off until the error is cleared. At times I cannot clear the error and I've had to set my parking brake and leave the car electronics running while I go into a store, which leaves car unsecured and drains the battery. The car has gone into my local GMC dealer for repairs. The first time I took it in (August 2020), I was 365 miles outside my warranty and GMC refused to pay for the repairs. The dealership felt certain a recall would be issued and suggested I have harness switched which they admitted was a band-aid fix and that it wouldn't fix the issue, but it would allow a period where the error disappears (which it did) - until a recall is issued. The Shift to Park error reappeared about 1.5 years later. I took my Acadia back to the dealership and was told they could not replicate the error and therefore there was nothing they could about it. The error is happening much more often and I've scheduled another repair appointment to address the problem.