GMC Acadia Complaints

5,595 consumer complaints on file.

#11699625November 16, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
My 2014 GMC Acadia constantly displays “Service Stabilitrak,” “Service Traction Control,” ABS, brake, and check-engine warning lights. The vehicle will not accelerate past 40 mph under normal driving. Recently, the vehicle began showing “Engine Power Reduced” randomly without any warning, and the vehicle loses power suddenly. The OBD2 code P1682 (Ignition 1 Circuit/Relay failure) appears every time. This issue has caused the vehicle to jerk, lose acceleration, and even stall in the middle of an intersection during rush-hour traffic while my children were in the car, creating a serious safety hazard. These warnings and symptoms are constant, and the power-reduction events occur unpredictably. No official inspection has been completed by the manufacturer. The failed component is still in the vehicle and available for inspection. The malfunction affects traction control, stability control, braking systems, and engine power, putting occupants and other drivers at risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699678November 16, 2025
SERVICE BRAKES
ABS Modulator failed leaking oil. Loss of braking Repair service found the same problem. Part was scrapped.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699512November 15, 2025
POWER TRAIN, ENGINE
Car stalls and transmission dies
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699561November 15, 2025
UNKNOWN OR OTHER
shift to park issues when placing the vehicle in Park
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699535November 15, 2025
SERVICE BRAKES
Breaks are squeaking awful. Have had front brakes and rotors replaced which cost $380. Did not fix the problem. Have also saw where a lot of other 2024 gmc Acadia owners are experiencing the same problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699159November 13, 2025
STEERING, ELECTRICAL SYSTEM
Often times, on the heads-up display I would get "Steering Assist is Reduced Drive with Care" and my temp gauge will stop working and when I stop, my fan continues to run until I disconnect the battery for 20 secs.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698972November 12, 2025
ENGINE AND ENGINE COOLING, STEERING
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699072November 12, 2025
SERVICE BRAKES
The vehicle brake system completely failed. The brake pedal was depressed and several warning lights were illuminated on the dash, yet the vehicle would not come to a complete stop. At the time of failure, the abs light, parking brake light, traction control light, and collision light illuminated on the driver display. Additionally, the dash displayed a message requesting the driver to depress brake pedal hard and to “service ESC”. The brake pedal felt soft and would go all the way towards the floor. The vehicle had very limited braking and would not come to a complete stop. The vehicle was taken to a GM dealership for diagnosis and repair. The dealership confirmed that the brake system had failed and there was inadequate stopping force being produced. The entire master cylinder assembly which includes the hydraulic valve block and electric motor were replaced under warranty. The vehicle had 24,638 miles at the time of failure. Prior to the failure, there were zero indications that there were any issues with the brake system. Fortunately when the brake system failed the vehicle had just backed away from a parking spot and pulled forward towards a stop sign at low speed. The potential concern was that pedestrians, fellow motorists or the driver of the vehicle could have experienced significant injury or death due to the vehicle’s brakes failing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699041November 12, 2025
UNKNOWN OR OTHER
I was driving on a two-lane road when unexpectedly my front moonroof spontaneously shattered sending glass down on top of me, the console area, and the passenger and rear seating areas of my 2025 GMC Acadia. It happened without warning and no external factors. It was a pleasant sunny November day. The moonroof was not open at the time. Fortunately no one else was in the vehicle with me at the time and no other cars were nearby since the two-lane is not a heavy traffic area. This put my safety at risk and could have put others at risk had others been in the vehicle or nearby since I was startled and had the natural reaction of crouching over and down in an attempt to protect myself therefore taking my eyes off the road and not paying enough attention to driving the vehicle. Glass could have fallen and hurt other passengers. The remaining moonroof glass crackled and I then looked up in shock wondering what happened and then feared glass fall into my eyes and immediately looked down away from the moonroof. I had just left my residence before the incident and was less than two miles from home. I found the next available place to turn around and drive back to my home and exit the vehicle. I then called the dealership I bought the vehicle from in January 2025, new. I also called GM Customer Service to seek assistance. The vehicle has 7125 miles. There were no warning signs. The incident happened today and no one has inspected the vehicle and its damage. A customer service case was opened with GM. I sent pictures to the dealer service manager who said he attached the pictures to my GM case online.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698783November 11, 2025
POWER TRAIN, SERVICE BRAKES
The vehicle will be in park, and a message will pop up saying "shift to Park check and advise". Took my car into the dealer shop to get this fixed their response was the cause of the condition may be that the park switch in the transmission control (shifter) assembly is not pulling the BCM signal low to electronically show that the vehicle is in the park position.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698525November 10, 2025
ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
The contact owns a 2020 GMC Acadia. While the vehicle was at the dealer for maintenance, the contact was informed that the radiator was leaking and needed to be replaced. In addition, the contact was advised that there was coolant intrusion. The contact stated that it was not specified if the coolant intrusion had gone into the engine. No warning lights were illuminated. The vehicle was not repaired due to the cost. The contact was informed that the fueling system needed cleaning service, as well as the brake fluid and transmission fluid needed to be serviced. The vehicle was taken to several independent mechanics, and no leaks were found with the radiator. The manufacturer was not made aware of the failure. The failure mileage was approximately 62,000. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698307November 8, 2025
UNKNOWN OR OTHER
I purchased this 2025 GMC Acadia on 3/29/2025. About a week into owning it, the navigation stopped working. OnStar was able to reset my system. Then, about a month later, the vehicle locked my keys in the cabin without my knowledge. OnStar was able to unlock my vehicle remotely. Then, on 10/23/2025, I noticed my navigation was not showing my true location. I tried the Google Assistant, and it wasn't connected. After further investigation, my wifi hotspot was not working either, along with other connectivity apps. I researched how to manually reset my system and followed all prompts; that did not fix the problem. I pressed the OnStar button, and nothing happened; no connection. I thought that maybe the vehicle needed to cycle a few times. I let this continue for about a week before calling OnStar from my phone. They told me to press my SOS button; if it didn't connect, then I would need to take the vehicle to the dealership. So I took it to the dealership 11/6/25. They tried to download the update to my vehicle multiple times, over 6 hours at the shop, and the vehicle wouldn't accept the update. It is determined that the OnStar telematics control module is defective. The dealership says the part is backordered, and they do not have an ETA for arrival. After perusing the GM/OnStar forums, I am seeing that this is a repeated issue for many customers on vehicles as old as 2018, and the part doesn't come for 6 months or more in most cases. It does seem more prevalent with vehicles 2022-current. The issue here is that OnStar is touted as a safety feature, and I have been given 3 years of free OnStar service. I am unable to utilize the service (roadside assistance, accident assistance, and navigation) and many other features because of this. GM is aware that this is an issue, and the module is backordered when it should be readily available, since these issues seem to be commonplace. My brand new vehicle should work without issue and should be repaired promptly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698161November 7, 2025
FORWARD COLLISION AVOIDANCE: WARNINGS, UNKNOWN OR OTHER
The put in park shows after engine is turned off, have to restart and shift out of park and back to park. This could take several times to accomplish.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698201November 7, 2025
POWER TRAIN
The contact owns a 2019 GMC Acadia. The contact stated that upon attempting to turn off the vehicle, the vehicle failed to register that the transmission was in park(P) and the vehicle failed to turn off. The contact stated that the vehicle continued to beep. The "Shift to Park" message was displayed. The contact stated that the vehicle required to be turned off and restarted several times, or to be driven to shift to park(P) successfully. Upon investigation the failure, the contact linked the failure to GM Technical Service Bulletins: 18-NA-297 and 19-NA-206. The vehicle was taken to the local dealer, where it was diagnosed with a faulty shift control, and the dealer determined that the shift assembly needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 52,280.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698177November 7, 2025
FUEL SYSTEM, GASOLINE
The contact owns a 2021 GMC Acadia. The contact stated while driving 75 MPH, the check engine warning light illuminated. Additionally, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road. The contact stated while attempting to start the vehicle, the vehicle failed to start as intended. The contact stated that the failure had nearly caused the vehicle to be run over by a tractor trailer. The contact's wife and three minor children were also occupying the vehicle during the failure. The contact stated that he and his family could have been killed due to the failure. The vehicle was towed to the dealer, where it was diagnosed with fuel pump power control module failure. The contact was informed that the fuel pump power control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact related the failure to an unknown recall; however, the VIN was not included in the recall. The failure mileage was approximately 35,500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698037November 6, 2025
POWER TRAIN
Transmission feels like it’s slipping, almost like a jerky shift from any stop, seems like a common issue and should be recalled!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697707November 5, 2025
ELECTRICAL SYSTEM
SHIFTER PROBLEM 2018 GMC ACADIA. I NEVER RECEIVED A RECALL NOTICE OR BULLETIN ABOUT SHIFT TO PARK SHIFTER PROBLEM
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697799November 5, 2025
BACK OVER PREVENTION: WARNINGS
Every time I park it show up “ shift to park and it takes long to remove the code. battery keeps dying because of it since the car won’t turn off all night.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697774November 5, 2025
SERVICE BRAKES
Brakes have failed now three separate times. The brake pedal becomes firm and the car will not stop or slow at all. I am pregnant and also had my toddler in the car with me. No warning symbols on the dash. Taken to dealership after several weeks of communication saying this was a safety issue and received a loaner vehicle. However, they have said if THEY cannot reproduce the issue, we will just get our car back. This is unacceptable. This is one of five issues we have already had with this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697497November 4, 2025
AIR BAGS
The contact owns a 2016 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (AIR BAGS); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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