GMC Acadia Complaints

5,595 consumer complaints on file.

#11677759August 1, 2025
STEERING
We were receiving a message stating steering reduction. Turns out the thermostat sticks open and the electronic control module reset was a temporary fix. We had the thermostat replaced and the issue hasn’t happened again. Steering issues should be a safety issue and be considered for recall. Your thoughts please.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677436July 31, 2025
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), but the “Shift to Park” message was displayed. The vehicle made an audible chime. The contact shifted the gear shifter back and forth, then shifted into park(P) before the proper gear was recognized. The vehicle was taken to an independent mechanic; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677495July 31, 2025
ELECTRICAL SYSTEM
Vehicle's "SHIFT TO PARK" warning is often displayed when vehicle shifter is in PARK and then the engine is turned off. Often takes several attempts to correct the problem by restarting and turning off the engine or by manipulating the shift lever while in PARK. These is a current recall for this issue with the same year, make, and model of vehicle. Checking the VIN against the NTSB recall list shows this vehicle is not included in the recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677534July 31, 2025
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that upon shifting to park(P), the message "Shift to Park(P)" was displayed intermittently, and the vehicle failed to turn off. The contact stated that the vehicle was taken to a dealer, where it was repaired; however, the failure recurred. The vehicle was taken back to the same dealer, where it was diagnosed that the shifter module needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 129,573.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677536July 31, 2025
ENGINE, STEERING
Last week, the coolant gauge , on our 2019 GMC Acadia, was reading below "C".... The "Steering Assist" warning was disabled on the on-screen display and the Air conditioning stopped working. Took the car to a mechanic, who read the codes.... Mechanic stated that all symptoms were based on a defective GM thermostat. The thermostat was "stuck-open" causing the "steering assist" to be disabled as well as the A/C from being disabled as well. It seems GM has updated the part since when the series of Acadia were manufactured. After getting it repaired, at of our pockets, we researched and noticed that thousands of other GM Acadia owners had the same exact 3 symptoms: (1) malfunctioning coolant reading (2) "Steering assist" disabled (3) a defective ("stuck-open") thermostat..... Symptoms were exactly the same for all parties involved. We have owned many vehicles never had a thermostat fail before 65k Miles.... It became a safety issue since the car disables the "steering assist" based on the thermostat being stuck open. Contacted GM corporate which stated unless a recall, there would be no compensation. GM needs to make it right for the thousands of GM owners whose car has the 3.6L engine In short, this is a major issue since the car's steering system is NOT working correctly We would like a recall to be initiated. Thank you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677683July 31, 2025
UNKNOWN OR OTHER
Shift to park. Car will not register as in park. Have previously had issue fixed and has started again. Was told this is a common reoccurance and would likely happen again over time even if I pay to have it fixed again. Yesterday I spent 45 minutes trying to get the car to turn off. If it says shift to park the car will not shut completely down and there is nothing that can be done. I spoke with gmc for 30 min and was finally told to unhook the battery because they have no way to make it shut off without going to a dealership which was closed at the time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677430July 31, 2025
SERVICE BRAKES
New 2025 GMC Acadia Denali vehicle with only 5,600 miles driven. When starting SUV I pressed start button and brake pedal. I felt the brake pedal pulse down. Once started, the dashboard lit up with warnings of Service ESC and Service Brake Assist. Quickly took to dealer, they ran diagnostic tests and revealed the Master Brake Cylinder is out. Dealer said I should Not drive it due to danger of brakes completely failing! Dealer has other 2025 Acadia's come in with no brakes at all due to same issue and they are still there waiting on same part. Dealer and GM have NO estimate of when they will have a new Master Brake Cylinder as this part is on back order. A case has been created with GM regarding part availability delay. My research has revealed numerous owners of 2025 Acadia, Traverse and Enclave with this same Master Brake Cylinder failure and no parts available waiting months. Brake failure is a MAJOR SAFETY hazard! GM has stopped selling the 2026 Acadia, Traverse and Enclave. They should recall all 2025 Acadia, Traverse and Enclave!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677164July 30, 2025
ENGINE
Shift to Park Vehicle does not recognize the gear shifter is in the park position. Vehicle does not fully shut down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677326July 30, 2025
ELECTRICAL SYSTEM, SERVICE BRAKES
When I put my vehicle in park, the message “shift to park” pops up. It has been doing this for well over a year. I have already had to replace a battery once due to this because I didn’t realize it was still on. It does not happen everytime I park but at random times. The more it happens, the longer it takes for it to go off. At this point, I can only hope my car is really in park. I jiggle the shifter, hit the “ +|- “ on the shifter and have to turn the vehicle off and on about five or six times. Eventually it will go off. It took me 20 minutes today for it to go off in 100 degree heat. The vehicle’s AC is not running when trying to get the shifter to go off. It keeps the electronics running but not the AC. I keep waiting to receive a recall on this vehicle because of this issue but still nothing. I have noticed there is a recall for this but not vehicle. I have already replaced one battery due to this issue and do not want to continue to replace batteries and worry if the vehicle is really in park or not.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677349July 30, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
When backing up and nothing behind car abruptly applies brakes no alerts. This has occurred on multiple occasions and is very scary. This started first week of ownership took to the dealer and was told GM is aware of the issue but no repair available at the time. the car is a year old now and problem is still present I have had to disable the braking feature. The backing emergency braking is a safety feature so pedestrians / children don’t get run over.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676988July 29, 2025
UNKNOWN OR OTHER
My 2018 GMC Acadia has had the "Shift T Park" alarm and indicator going off after my car is turned off and in "PARK" It only happens intermittently, but frequently enough to be annoying. The dealer and GM told me because my VIN wasn't in their recall range, they would not honor the recall. This has been happening since I purchased the car in 2018.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677049July 29, 2025
POWER TRAIN
When trying to park car, vehicle will not detect the shifter is in park. If the car does not detect its in park it will not turn off and stays running hampering your exit from the vehicle. This is truly an unsafe condition due to not knowing how to get the car to shut down as well as not knowing if the car will roll if you do get out.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677129July 29, 2025
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: WARNINGS, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Vehicle had a "service ESC" and "service brake assist". Dealership said the master cylinder is bad and it is not safe to drive. Now its sitting at the dealership with NO eta on parts and no loaner cars.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677116July 29, 2025
SERVICE BRAKES
My car has less than 8,000 miles currently. On June 5, I started my car and lights were on saying I needed service and maintenance. I believe it was around 4500 miles at the time. I took it in once, where I bought my car, they said it just needed an update. The next day, all of the same lights were on. Turns out, I need a new brake master cylinder. It’s on back order. I bought this car in April. It’s been in the shop for a month. This is ridiculous. - the notifications said I needed electronic stability control and service brake assist maintenance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676840July 28, 2025
POWER TRAIN
The transmission failed at 90k miles, causing shuddering and stalling on acceleration. This has occurred several times on major highways and is very dangerous.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676817July 28, 2025
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
The contact owns a 2023 GMC Acadia. The contact stated while driving 55 MPH, while attempting to depress the brake pedal, the contact heard an abnormal sound coming from the brakes. A dealer and independent mechanic were contacted. No warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the brake pads wear was uneven on the driver’s side and the driver’s side front caliper needed to be replaced. The vehicle was then taken to the dealer where it was diagnosed; however, the result was not provided. The brake pads were replaced; however, the caliper was not yet replaced. The manufacturer was notified of the failure, and informed the contact to take the vehicle to the dealer for assistance. The approximate failure mileage was 39,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676771July 28, 2025
SERVICE BRAKES
Brake Master Cylinder failure. Received warning lights on the dash and took to the GMC dealer for the diagnosis. Dealer stated the car is not drivable because the brakes could fail. The head mechanic at the dealership confirmed that the cylinder is the problem. They had no idea as to how long it would take to find a replacement cylinder.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676508July 27, 2025
UNKNOWN OR OTHER
Shift to park error message consistently displayed forcing repeated restarting of the vehicle so that it finally recognized that the vehicle was in park and would unlock the doors for safe exit from the vehicle. This was a known issue by General Motors and they have 2 class action lawsuits filed n the states of Ohio and Tennessee for this issue with well over 110,000 vehicles affected. General Motors refuses to acknowledge this defect and fails to issue a recall. Their only offer when I took this vehicle to a GM certified dealership was to offer 15% towards the replacement of the shifter assembly. The excuses made were the vehicle was out of warranty as well as over in mileage. I bought this vehicle used from an Acura dealership and accepted delivery of it on [XXX] with approximately 33,417 miles. I started to experience the shift to park error message at 36,013 miles in early May 2025. By the time I was able to receive instructions from GMC customer care and secure repair for this issue the vehicle mileage was approximately 37,000 miles. It is not a pleasant feeling to be trapped inside your vehicle until you can get it to finally recognize that the vehicle truly is in the park mode. With the hundreds of thousands of vehicles on the road with this issue I feel GM should recognize their problem and perform a vehicle recall. This flaw had been installed in numerous GM vehicles manufactured as early as 2017. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676388July 26, 2025
UNKNOWN OR OTHER
When vehicle is placed in park, it is still showing a "shift to park" message once car is turned off.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676183July 25, 2025
STRUCTURE:BODY
The back seat driver's side door shut with such impact as to amputate the finger from an adult. Vehicle was parked on incline when front driver's side door shut, the back door also shut. There were no safety features to protect fingers from the hinge side of back door. The force of the door slamming and lack of any space between the hinge side of the door and its frame caused my middle finger from the top knuckle up to be cut off completely thus amputated from hand.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0

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