Multiple GMC Acadia owners have reported a similar problem with the crossover’s transmission.
Columbus ABC affiliate ABC6 recently spoke to a Westerville, Ohio family who had been experiencing problems with their 2018 GMC Acadia. They claim the crossover will sometimes fail to recognize that it has been put into park, flashing a message on the dash instructing the driver to “shift to park” even when the gear lever have already been moved to the ‘P’ position.
This sounds like the same problem experienced by a number of other GMC Acadia owners currently involved in a class action lawsuit against GM. The plaintiffs in the class action suit, which is being led by Connecticut attorney Sergei Lemberg, say their 2017 and 2018 model GMC Acadia crossovers will instruct them to “shift to park” even when the vehicle is already in park. As a safety measure, the vehicle will refuse to fully shut off or lock when it is not in park, leaving the owner stranded. One plaintiff in the suit took their vehicle to a GM service center, where mechanics were able to confirm the problem, but told her there was no fix available at this time.
The problem may also lead to the vehicles rolling away. The Ohio family ABC6 spoke to said their GMC Acadia once displayed the “shift to park” message when the vehicle was already in park, but when they got out of the vehicle, it rolled down the driveway with one of their children still inside. They have also taken their car into a GM service center, where employees identified a sensor problem and replaced the faulty part, but they claim the problems persisted.
GM has posted a technical service bulletin acknowledging the shift to park problem, though there is still no fix available. ABC6 was also able to track down other GMC Acadia owners who experienced this problem when they voiced their concerns through online forums.
Limberg, the attorney leading the class action case over the problem, says GM’s position on the matter is that there is “no legal claim for the reasons,” his clients maintain in the lawsuit. He said that GM also argues “the problem is small and insignificant,” and it can therefore not be held responsible for it. The automaker has already sought to have the suit thrown out.
Notably, the refreshed 2020 GMC Acadia ditches its traditional gear select lever for the Electronic Precision Shift system, which uses buttons to change gears instead.
Have you experienced this issue with your 2017 or 2018 model year GMC Acadia? You can let us know in the comment section below.