GMC Acadia Complaints

5,595 consumer complaints on file.

#11756784August 13, 2026
UNKNOWN OR OTHER
The rear stationary/fixed sunroof glass spontaneously shattered while i was driving. I heard a loud pop, after i parked i checked the car to see what happened and found a shattered sunroof. There was no impact or known object that struck the glass.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756510August 12, 2026
ELECTRICAL SYSTEM, ENGINE, STEERING
See attached file
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755898August 10, 2026
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that while parking the vehicle, the gear shifter was shifted into park(P); however, the message “Shift to Park” was displayed. The gear shifter was moved back and forth, then shifted into park (P) before the proper gear was recognized. The vehicle was taken to the dealer, and the gear shifter was replaced, but the failure reoccurred. The vehicle was taken back to the dealer, and the gear shifter, switch, and harness were replaced. The manufacturer was made aware of the failure. The failure mileage was 10,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755449August 7, 2026
SEAT BELTS
The contact owns a 2023 GMC Acadia. The contact stated that after further inspection, the contact became aware that the second-row middle seat belt buckle failed to latch securely into the seat belt buckle and failed to remain securely locked. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 35,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755203August 6, 2026
UNKNOWN OR OTHER
Since delivery, my 2025 GMC Acadia AT4 has had severe wind noise from the driver's side window at highway speeds. The noise sounds like fingernails on a chalkboard and at times as though the window may shatter. I have taken it to the dealership 4 times with no resolution. I provided video clearly capturing the noise and was still told they could not hear it. I have confirmed the dealer road tests the vehicle in morning traffic at low speeds — where the noise cannot occur. It only happens at highway speeds. Their "cannot duplicate" finding is the result of inadequate testing, not the absence of a defect. After sitting for approximately 7 days, condensation builds up inside the cabin, indicating the driver's side window seal is improperly installed. I reported this to the dealer as well with no fix. After 4 visits, dismissed video evidence, and improper test procedures, the defect remains unrepaired. I request NHTSA investigate this as a potential widespread issue on 2025 GMC Acadia vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755081August 5, 2026
AIR BAGS, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Hello so I notice 3 weeks ago my headlights keep cutting off and on then a week later my radio stopped working, The floor of the driver side is always wet after it rains. I noticed one day the rain started dripping on my feet when I drive after a big rain fall, I believe the car is not sealed properly and now water is coming out from the airbag signs in my vehicle and the car starting to smell like mildew. I think water is sitting in certain parts of my vehicle. I'm not sure what to do.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754818August 4, 2026
STRUCTURE:BODY:HATCHBACK/LIFTGATE
The contact owns a 2012 GMC Acadia. The contact stated that while the vehicle was parked, after pressing the liftgate button the liftgate raised and crashed down independently after several seconds. No warning lights were illuminated. The contact researched and was made aware of an unknown recall; however, the VIN was not included. The vehicle remained at the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 189,352.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754369August 3, 2026
UNKNOWN OR OTHER
shifter micro-switch is not working and is available for inspection upon request. Vehicle is not shutting off as it is indicating shift to park. The vehicle unable to shut off can cause issues while parked in the garage still running and worried about causing a fire. Problem diagnosed by private individual but have plans on taking it to dealership. The shift to park indicator issue has been occurring for almost a year and has progressively gotten worse. I have noticed other vehicles with the same make/model/year have had similar issues with known defects that a recall was issued.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754373August 3, 2026
ENGINE, POWER TRAIN
The contact owns a 2019 GMC Acadia. The contact stated that while driving at an undisclosed speed, the transmission failed to properly shift gears and the vehicle failed to exceed 40 MPH while driving. The contact stated that the transmission failed to shift above third gear. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who discovered that there was no transmission fluid inside the torque converter. The vehicle was scanned and displayed an issue with the transmission control module. The local dealer was contacted and confirmed that the VIN was not included in NHTSA Campaign Number: 20V668000 (Power Train). The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 154,429.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754182August 1, 2026
STEERING
No incident but steering assisted reduced could cause an issue. Also the fix is to reset the computer by detaching the negative pole on the battery. This could be an issue due to the heat in the car someone could get burned.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753902July 31, 2026
UNKNOWN OR OTHER
Our onstar module has stopped working since last November after a software update and now issues are starting to cascade causing many other electrical issues to the point that I expect the car to leave my wife and 15 month old daughter stranded. Ours and many other vehicles are having this issue and when any question is asked to gm no response is given or we’re just told to keep waiting.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753694July 30, 2026
AIR BAGS
I think my vehicle is apart of this recall: March 17, 2014 NHTSA CAMPAIGN NUMBER: 14V118000 Side Impact Air Bags Wiring Connections Failure of the side impact air bags and seat belt pretensioners to deploy in a crash increase the risk of injury to the driver and front seat occupant.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753750July 30, 2026
ENGINE, POWER TRAIN
I was at a red light, I went to drive as the light turned green and my car stopped and wouldn’t drive, I could go into neutral to get out of way but anything the car would stop. There is no codes or lights turned on my dash though.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753437July 29, 2026
STEERING, UNKNOWN OR OTHER
I am submitting this complaint to request that NHTSA investigate a potential safety defect involving the engine coolant temperature monitoring system, thermostat/engine coolant temperature sensor system, and its relationship to reduced steering assist in 2019 GMC Acadia vehicles. My 2019 GMC Acadia, currently at approximately 61,500 miles, has experienced the following symptoms: • The engine temperature gauge remains flat or reads abnormally low/cold. • The cooling fans run continuously at extremely high speed, creating a loud "screaming" fan noise. • The vehicle displays the warning message "Steering Assist is Reduced — Drive with Care." • The vehicle has a history of diagnostic trouble code P0128, "Engine Coolant Temperature Below Thermostat Regulating Temperature." I am concerned that these symptoms are related and represent a potential safety defect rather than an isolated thermostat or cooling-system repair. GM has issued bulletin PIT5967, "Service Steering Message With P0128," which applies to GMC Acadia vehicles from model years 2017 through 2023. The bulletin states that when P0128 is present, the ECM may be reading coolant temperature incorrectly and that a "Service Steering Message" may be displayed to protect the steering gear in the event of an undetected overheating condition. GM instructs technicians to diagnose and repair P0128 first. GM bulletin 17-NA-158 also describes a relationship between P0128, an invalid coolant-temperature signal, and the "Steering Assist Reduced, Drive With Care" warning. The bulletin explains that the steering module relies on valid coolant-temperature information to provide additional steering assistance under cold conditions. When the coolant-temperature signal becomes invalid, this function can become inoperative, potentially resulting in a heavier-than-normal steering feel.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753346July 28, 2026
POWER TRAIN, VEHICLE SPEED CONTROL
I find the location of the lower gear shifters + and - to be physically far away from a driver's normal reach, making a driving hazard. If you want to change gears as is typical in mountain driving in steep descents, the driver has to lean awkwardly away from all mirrors and standard driving position making it a potentially hazardous situation for the driver and occupants to be in. It has nothing to do with comfort, but rather normal functionality, keeping the driver and their attention unadjusted on the road, all surroundings with minimal, if any changes to their physical posture while in the drivers seat. The location of the gear shifters are in a totally unorthodox location, nearer to the passenger, rather than the driver.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753151July 27, 2026
AIR BAGS
The contact owns a 2008 GMC Acadia. The contact stated that while driving at an undisclosed speed, the driver’s side air bags deployed; however, the vehicle was not involved in a crash. The contact stated that while the vehicle was parked, the contact attempted to start the vehicle and the starter was inoperable. No warning lights were illuminated. The vehicle remained at the residence, and the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 200,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753144July 27, 2026
UNKNOWN OR OTHER, POWER TRAIN
Engine has a noise (chirp) when vehicle delivered. Found out after purchase that a known problem was present in the engine compartment that engineering has been unable to identify. Bulletin #PIP6045B (Oct20,2025) Document ID:7006702 With the engine failures General Motors have had I have concerned about operating. A failure could result in danger to the occupants.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752622July 24, 2026
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The contact owns a 2025 GMC Acadia. The contact stated that while driving uphill at an undisclosed speed, the vehicle hesitated, jerked, and stalled. The vehicle was taken to the dealer, where a computer reprogramming was performed; however, the failure persisted. Additionally, the contact stated that while driving 65 MPH and merging into the left lane, the automatic emergency braking system erroneously engaged and the vehicle hard-braked, nearly causing a rear-end crash. The contact immediately depressed the accelerator pedal, and the vehicle accelerated as intended. The contact stated that the failure was intermittent and had occurred approximately six times. The vehicle was taken to the dealer, where the cause of the failure could not be determined; however, the dealer advised the contact that the failure might be related to the camera system. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 3,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752377July 23, 2026
UNKNOWN OR OTHER
WHEN I PUT THE CAR IN PARK, I GET AN ERROR MESSAGE THAT SAYS SHIFT TO PARK AND IT TAKES PUTTING IN PARK NUMEROUS TIMES TO GET IT TO CLEAR SO I CAN TRUN THE CAR OFF AND LOCK IT. I KNOW THERE HAVE BEEN SOME MODELS THAT HAVE BEEN RECALLED DUE TO THIS PROBLEM, HOWEVER MINE IS NOT INCLUDED IN THAT RECALL. I WOULD LIKE TO KNOW WHY IT IS NOT INCLUDED AND IF THERE IS ANY HELP AVAILABLE TO CORRECT THIS ISSUE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752531July 23, 2026
FUEL/PROPULSION SYSTEM
The car stalled while driving it. It would not restart. I received an email with error code po23f. The car had to be towed to the dealership for repair. P023f fuel pump power control module failed. Fuel pump power control module had to be replaced. Car was at 45,041 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Acadia