2018 GMC Acadia

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.

Numerous occurences especially recently of shift vehicle to park when vehicle has been parked, turned off and already shifted into park position. Several occurrences where almost every time within 24 hours I use my cruise control and air conditioner at the same time my check engine light will come on as well as the stability trac indicator which then causes my air conditioner not to work and inability to start the vehicle due to having a check engine light on.

2018 Acadia will display “Shift to park” warning along with an audible warning when the vehicle is shut off. This happens even though the PRNDL display is in the “Park” position each time. If I try to exit the vehicle, the audible warning continues (apparently indefinitely). This began at an odometer of about 59,200. Initially, the situation could be corrected by restarting the car and shifting in and out of Park or depressing the shift knob several times. Within a couple of hundred miles, it became consistent and eventually could not be corrected as described above. Unfortunately, this is not covered under warranty. I began driving for a few months without the shift knob, simply depressing the plunger on the shift rod coming up from the transmission. Doing this, the warning rarely occurs and, if it does, it’s easily corrected with one or two presses of the plunger. Some modifications of the shift knob have allowed the knob to be used with results similar to driving without the knob. I hope there will be a software update (deployed over OnStar) to use the PRNDL information and eliminate this failed system.

For months after putting car in park it displays a "Shift to Park" message. It won't let you fully shut down vehicle. Some times I can start it again, back up a little, put it back in park for it to shut off. Not one time though. You have to do it repeatedly. Maybe 6 or 7 times before it works. Most times I just finally have to walk away from the vehicle. Problem being it won't let me lock my car - which the police in our area keep warning us to do to prevent the vehicle thefts. It also continues to 'bing', running down the battery, which could leave me stranded somewhere. I looked this up on line assuming it would be a recall because it is a 'known defect' and there are thousands of complaints on line of people having the same issues and dealer won't take care of. There are lawsuits. This should be a recall.

The contact owns a 2018 GMC Acadia. The contact stated that while driving at an undisclosed speed, the rear liftgate warning light illuminated. The contact stated that upon inspection, the liftgate was closed. The contact stated that after parking the vehicle, the liftgate failed to latch securely and a bungy was used to keep the liftgate closed. The contact stated that the dome light illuminated indicating that the doors were open; however, the doors were securely closed. The contact stated that the roof light was turned off and the radio failed to operate. The vehicle was not diagnosed or repaired. Neither the dealer nor the manufacturer was notified of the failure. The failure mileage was approximately 200,000. The VIN was not included.

When shifting the car into Park the P lights up and the car appears to be in Park, but an alarm goes off when you press the stop button to turn the car off. Action Required : Shift into Park. You have to restart the car and move the shifter or press the button on the shifter to get it to recognize that the car is in Park. This has gotten worse, last time it took over 20 minutes to get the car to recognize it. I have the car scheduled to go to the shop tomorrow. Warranty has expired due to date. Car only has 17,760 miles on it. 05/27/2022 was the last time the car was driven. I am sure they will try to charge me for this. It is a known issue and there seems to be a class action law suit over it. TSB - 19-NA-206 Dated September 2019. This should be a recall.