2019 GMC Acadia Problems

What owners report

Owners of this model year most often write about a "Shift to Park" message that appears while the shifter is already in Park, which can leave the vehicle running and chiming; these complaints come in across a wide mileage range, including fairly low mileage. Transmission and electrical complaints are the next most common themes, covering rough or delayed shifting, shuddering, and battery drain, while a smaller group involves overheating with a steering-assist warning tied to the thermostat.

1. 1
   Transmission and drivetrain

   Shift to Park message; vehicle won't shut off

   • 218 complaints (56%)
   • median 42,790 mi at 4.8 yrs old (44 state mileage)
   • owner-quoted repair $670 (median of 23 quotes)
   • filed 2019–2026

   Owners describe shifting into Park and being told to "Shift to Park" even though the shifter is in the Park position and the indicator agrees. The vehicle may not turn off, the horn may sound or the alarm may trigger when the door is opened, and repeated shifting between Park, Neutral and Drive is often needed before the vehicle responds. Some complaints say the battery drained after the vehicle failed to shut down. Dealers are reported to have replaced the shifter assembly, a wiring harness and switch, the transmission control module, or a park switch, and some owners say they were told their vehicle was not covered by a recall. Reported from under 1,000 miles to about 97,000 miles, with many complaints between roughly 20,000 and 75,000 miles and no clear seasonal pattern.

   Recall 20V668000

   What to check: With the engine running, shift into Park and watch for the message and any chiming before shutting off; repeat several times. Ask whether the shifter assembly, park switch or related harness has been replaced, and keep the battery in mind if the car has sat with the ignition left on.

   2 excerpts from owner complaints in NHTSA records

   “When I got to work this morning, I put my 2019 Acadia in park and tried to turn off the car. An alert popped up that said, shift to park, but the car was already in park. I turned the car off and then back on and it corrected, but this is the second time in two days this has happened.”

   NHTSA complaint #11413919, filed 2021-04, 44,820 miles

   “When I shift the car into park and turn the car off, the car indicates shift to park and dings until I move the gear shift around for several minutes, and then the indicator statement and sound stop. This happens approximately half the times I park and turn the car off.”

   NHTSA complaint #11406367, filed 2021-04, 40,000 miles
2. 2
   Electrical system

   Battery drain and no-start / stall

   Mentioned in 6 of 60 sampled complaints

   Owners report the vehicle failing to start or stalling shortly after start, with battery, steering and brake warning lights lit. Several complaints describe the battery being replaced repeatedly or jump-started, with one owner reporting loss of power steering and braking feel while driving after a jump start. In another case the vehicle sat with the ignition on after a failed shutdown and the battery ran down. Dealers are reported to have replaced batteries and, in some cases, to have looked for a diagnosis only after replacement. Reported from a few thousand miles up to about 70,000 miles, with several complaints under 30,000 miles.

   1 related service bulletin

   What to check: Ask how old the battery is and whether it has been replaced more than once, and check that the vehicle starts reliably from cold. A service bulletin describes a diagnostic procedure for intermittent no-crank or stall conditions with a security light.

   2 excerpts from owner complaints in NHTSA records

   “After jump starting car because of dead battery decided to drive to dealer 1-2 miles awa.y. My wife followed me in car. While driving during the 1-2 mile trip the stearing would lock up (quit working) and the breaks as well.this lasted several seconds and resulted in total lack of control at 35-45 MPH on a city street. The alternator was working providing electricity to the cars systems. …”

   NHTSA complaint #11366141, filed 2020-10, 11,246 miles

   “9 days after taking possession of my 2019 Acadia, with less than 900 miles on it, it stopped working. The first time I had a problem I had gotten out of the truck to run into a store. When I tried to start it I was getting a message to shift to park. The electric was on, but the truck would not start. I called for a tow truck. The tow driver got the truck started and advised me to drive it to the dealer less than 1 mile away. While driving on a major road I lost my power steering and stabiltrak, making it feel like I lost my brakes. …”

   NHTSA complaint #11300410, filed 2020-01, 1,100 miles
3. 3
   Transmission and drivetrain

   Harsh, delayed or shuddering transmission shifts

   • 17 complaints (4%)
   • median 49,600 mi at 3.0 yrs old (7 state mileage, few)
   • filed 2020–2026

   Complaints describe the transmission shuddering under light acceleration, hesitating or failing to shift, and in one case refusing to go above third gear with the check engine light on. One owner reported the vehicle jerking and failing to gain speed with a stability-control message. Repair attempts mentioned include a transmission fluid change as a temporary measure, diagnosis of a transmission control module fault, and low or missing fluid found during inspection. Mostly reported between about 45,000 and 155,000 miles, often during normal driving at moderate speeds.

   Recall 20V668000

   What to check: During a test drive, accelerate gently from a stop and at highway speed and feel for shudder or hesitation; ask for transmission service records and whether the fluid has been changed.

   2 excerpts from owner complaints in NHTSA records

   “The contact owns a 2019 GMC Acadia. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle was shuddering. The failure occurred while depressing the accelerator pedal. No warning light illuminated. The contact inspected the vehicle, replaced the transmission fluid, and added a protective additive as a temporary repair for the shuddering. The local dealer was contacted, but the vehicle was not diagnosed or repaired. …”

   NHTSA complaint #11625847, filed 2024-11, 60,000 miles

   “The contact owns a 2019 GMC Acadia. The contact stated while driving at 45 MPH, the accelerator pedal was depressed however the vehicle failed to increase in speed and started to jerk. The “service stability track” warning message was displayed. The failure was intermittent. The contact took the vehicle to an auto store where there were no codes reported by the diagnostic tool. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,600.”

   NHTSA complaint #11442872, filed 2021-12, 49,600 miles
4. 4
   Engine

   Overheating with steering-assist warning

   • 47 complaints (12%)
   • median 51,807 mi at 4.7 yrs old (12 state mileage)
   • filed 2020–2026

   Complaints describe a "Steering Assist Reduced" or "Drive with Caution" message appearing while driving, sometimes together with a roaring sound, the check engine light, or an overheating condition. Owners report dealers and independent shops tracing the problem to a failed engine coolant thermostat; in one complaint a coolant temperature code was stored. Some repairs were completed, while others were not. Reported between roughly 48,000 and 80,000 miles, typically while driving rather than at startup.

   What to check: Check that the temperature gauge reads normally after a warm-up drive, look for coolant residue or a low reservoir, and ask whether the thermostat has been replaced.

   2 excerpts from owner complaints in NHTSA records

   “The contact owns a 2019 GMC Acadia. The contact stated that while driving at an undisclosed speed, a “Steering Assist is Reduced ” warning message unexpectedly displayed. The contact also stated that the thermostat became inoperable. Additionally, the thermostat information was no longer displayed on the instrument panel. The vehicle was taken to the dealer, where it was diagnosed that the thermostat had failed and needed to be replaced. The vehicle was not repaired. …”

   NHTSA complaint #11738131, filed 2026-05, 48,500 miles

   “The contact owns a 2019 GMC Acadia. The contact stated that while driving at an undisclosed speed, the message Steering Assist Fault - Drive with Caution was displayed. The vehicle was taken to an independent mechanic, who retrieved DTC: P0128 (Engine Coolant Temperature Below Thermostat Regulating Temperature) and replaced the engine coolant thermostat. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was 55,114.”

   NHTSA complaint #11698972, filed 2025-11, 55,114 miles

Buying note. Check the Park position and shutdown routine carefully on a test drive, since that is what owners write about most, and confirm the transmission shifts smoothly and the battery holds charge. Ask for service records showing what has already been replaced rather than relying on a clean visual inspection.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.