2018 GMC Acadia · symptom sheet
"Shift to Park" or "Service Shifter" warning comes on
- 163owner reports
- 34,000median miles
- $500median quote
- 0involved a crash
Newest report Sep 11, 2026 · checked Sep 29, 2026
353 of the 395 complaints on this car are about the transmission and drivetrain. 163 of those describe shift to park warning, which makes it the most reported problem on the 2018 Acadia.
Tick what matches of 163 reports
Shift to park warning on other Acadia years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2020, 2021.
What this problem usually is
This sheet covers a dash message that says "Shift to Park" or "Service Shifter" when the car is already in Park, or when it's sitting in Drive with the shifter lights glowing. Owners say it won't let them turn the car off, or it flashes up on the highway.
What got replaced
Owners who name the part that was replaced mention the wiring harness (13 reports) and the shifter assembly (12 reports).
Recalls and investigations
One recall on the transmission and drivetrain covers the 2018 model year. A recall on the same system isn't always the same failure, so read the defect text.
The right front intermediate driveshaft may fracture and separate while driving.
All 2 recalls on the 2018 GMC Acadia, with the owner complaints on each recalled system
NHTSA investigations into the transmission and drivetrain on the Acadia
Rear-view camera failure. Closed nov 21, 2022, led to recall 22V-709.
Fleet vehicle recall completion audit. Closed dec 28, 2015.
Non-crash engine compartment fires. Closed sep 8, 2008, led to recall 08V-441.
None of these investigations covers the 2018 model year.
What owners paid
8 of the 163 reports quote a price. Each dot is one quote. The middle half runs $500 to $668.
When it happens
The middle half of failures fell between 23,465 and 45,000 miles, from the 85 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 3 service bulletins or notices for the 2018 GMC Acadia that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
This service bulletin provides repair information to correct a customer concern of seeing an intermittent Shift to Park message displayed while vehicle is in Park.
This technical bulletin provides repair information to correct a customer concern of seeing an intermittent Shift to Park message displayed while vehicle is in park.
This technical bulletin provides repair information to correct a customer concern of message displaying shift to park when in park.
What owners wrote
“The shift to park displays and will not allow the vehicle to shut off. This is the second time this has happened in this vehicle. I have 63822 miles and repaired this same issue about 20000 miles ago. Looked into it and it appeared to be a common issue in this year and model. Looking for some insight on what if anything can b me done.thank you”
Filed Feb 10, 2024 · 63,822 miles
“The shift leaver when putting in park has an error code that the vehicle is not in park when it shows it is. The dealer said this is a common problem and replaced the shift leavers wire harness for 600.00. When this happens there is no way to turn the veh power off and it rolls a little before it engages.”
Filed Jul 7, 2022
“Shift to park error when turning off vehicle, which would not allow the engine to shut off. Had to have shifter and harness replaced.”
Filed Jun 21, 2022
“âAction required Shift to Parkâ indicator comes on when trying to park vehicle. Vehicle does not recognize that it is in park. Vehicle will continue to move a short distance before recognizing that it has been placed in park and then comes to an abrupt stop. Vehicle sometimes has to be shifted between drive and park several times before it will recognize that it is in park.”
Filed Jun 2, 2022
Should you keep driving it?
This page can't tell you that. 0 of 163 reports involved a crash and 2 people were hurt. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Engine stalls or loses power while driving 57 reports
- Infotainment, screen or backup camera fails 36 reports
- Battery dies or the car will not start 30 reports