2018 GMC ACADIA Complaints

when in park dash still say shift to park ....batteries died lights stay on staibility pops up on dash car have to be jumped then same issues

The contact owns a 2018 GMC Acadia. The contact stated while driving at an undisclosed speed, the cruise control feature failed to function as intended. The contact stated that the vehicle exceeded the set speed. The contact deactivated the cruise control feature; however, the vehicle failed to decelerate. The contact depressed the brake pedal, however the vehicle failed to stop as intended. The contact had to repeatedly depress the brake pedal before the vehicle finally stopped. The vehicle was taken to an independent mechanic; however, the failure was not duplicated. The vehicle was not repaired or diagnosed by the independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to take the vehicle to the dealer for diagnostic testing. The failure mileage was approximately 94,000.

A thermostat failure displays a "steering assist" warning while driving. The thermostat housing has been replaced twice in 3 years after this warning.

We purchased our 2018 GMC Acadia, used with 15,798 miles on the odometer, on [XXX] from John Wiesner, Inc. On [XXX], with 20,344 miles on the odometer, we began experiencing a "Shift to Park" message when trying to turn the vehicle off, even though the vehicle shifter indicated that the vehicle was in park. Though the vehicle would turn off, we could not clear the "Shift to Park" message or stop the associated audible alarm without a great deal of effort. A Wiesner dealership confirmed the problem, determined that a switch in the shifter assembly was not grounding, and replaced the transmission control assembly under warranty. All was well until early 2024, at approximately 47,500 miles, when we began experiencing the same problem. The dealer said we must pay $500+ for a repair and that if we failed to get the problem repaired we risked being unable to get the vehicle into park and unable to turn off the vehicle. Being unable to stop the "Shift to Park" message or to stop the audible alarm at the very least will run the battery down and being unable to put the vehicle in park or turn it off risks an injury to us or others. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Car has started displaying a "shift vehicle into park" message when I have put the car in park. Even though the care is clearly in park this warning displays and I'm unable to turn the vehicle completely off. Have re restart and mess with the shifter several times in order to be able to turn the vehicle off and lock the doors.

The car is put in park but the it doesn’t detect that it’s in park and won’t turn off. You can’t get out of your car because the won’t turn off. There were no errors before this. I get an error message that says shift to park. I have to shift the car into drive and then park several times to make the car turn register that it’s in park The dealership has not looked at my car. Nothing has ever been wrong with my car. I have read online that it’s a problem for many people with Arcadia vehicles .

11/22/24 shift to park issue appeared. Happens constantly. I just bought car on 10/26/2024. I know by looking up shift to park issues there was a recall on 2017 an 2018 cars.

My steering assist is coming on an the thermostat play apart in this. The thermostat need to be change. 2018-GMC-Acadia are having problems with these parts.

Steering Assist is Reduced Drive with care. Everyone is have a problem with the 2018-GMC-Acadia thermostat is bad.

My wife was taking the children to school when she arrived she placed the car into park and attempted to shut off the vehicle. Once the power button was depressed a beep was heard and the dash said shift to park. She had to turn the are on and off multiple times. I contacted gm and they said there is a defective pin in the shift controls but this issue is not covered by a recall.