GMC Acadia Complaints

5,595 consumer complaints on file.

#11729184April 4, 2026
ELECTRICAL SYSTEM, POWER TRAIN
I purchased my 2025 GMC Acadia on March 26, 2025. // My vehicle began to have electrical/communication/system issues in August 2025. // I took my vehicle to the dealer to address these issues at this time. When I got to the dealership, a representative performed diagnostics, and said "I can't even get a read on this. There is no signal coming from your module. You need to contact OnStar about this." // I called OnStar, and they ran a test, and stated that it is a manufacturing defect that needed to be handled with GMC. //No one informed me of the severity of the safety implications involved. // In March 2026, my vehicle was inoperable. The module controls everything, and was draining the battery at a severely high rate. I had my vehicle towed to the dealership. They tried to deny all liability and said that they weren't the dealership that sold me the vehicle. // I had my battery jumped so I could take it from the dealership have a new battery installed. My vehicle stalled and shut off while I arrived at the Auto Parts store. *** Answer to Questions: Q1: Yes. My vehicle is available for inspection. It is at the dealership. // Q2: My safety and others were put at risk because the brand new batteries were constantly draining and making me stall out in mid-traffic without having any control. // Q3: Yes. The problem has been confirmed by the dealer. They tried (and still are trying) to avoid responsibility. Other reports show that this is a significant safety issue with many GMC vehicles. // Q4: Yes. The vehicle was inspected by the GMC dealership. This is day-16 with no solution. // Q5: Yes, there were issues with the car, as stated above. But absolutely no indication that it would be safety issue. My engine was running normal the night before. No signs that the battery was low or dead and prohibit me from driving safely or that it would shut off.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729088April 3, 2026
ELECTRICAL SYSTEM
When shiftiing to park and turning the car off the message "Action Required Shift to Park". It is difficult to get the message to go away.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728726April 2, 2026
POWER TRAIN, UNKNOWN OR OTHER, ENGINE
Vehicle would not run due to a failed fuel pump control module. With a non-running engine, the transmission could NOT be placed into Neutral to be able to movie vehicle out of the road. Needed tow truck to move vehicle. This condition placed many people at risk as the vehicle could not be moved out of the way until a tow truck arrived.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728432April 1, 2026
UNKNOWN OR OTHER, LATCHES/LOCKS/LINKAGES, POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
Park to shift issue - the vehicle did not register that I was in park, jerked hard when trying to place in gear, did not register the PROPER gear (reverse, neutral, drive), would NOT unlock doors to let passengers out even if it were an emergency. Seems to be triggered on inclines but have also been having issues on flat ground. Other Acadia's apparently have a recall for this issue but my VIN does not register as recalled which is not acceptable. https://www.quillarrowlaw.com/blog/gmc-acadia-shift-to-park-recall-what-owners-need-to-know/ THEN trying to accelerate on road it acted as though in neutral, would only barely function in low gear. Again, gear shifting did not respond. The fab did not register to unlock the car (it has a new battery) or the trunk, or start the car just prior to the issue revealing itself.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728659April 1, 2026
ENGINE
My 2019 GMC SLT seems to be having sensor problems. I keep getting a message that my driver assist is reduced and my A/C only blows out hot air. It’s done this to me randomly id say about 4-5 times. It will go off as I’m driving and than my temp gauge goes to zero. I did research and alot of other users have the same issue and say thermostat or thermostat sensor. If I disconnect my negative on battery and wait a few minutes it will work again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728307March 31, 2026
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE, POWER TRAIN
The contact owns a 2023 GMC Acadia. The contact stated that while driving on the highway at an undisclosed speed, the vehicle stalled, and the engine lost automotive power. The vehicle was able to restart. During a second failure, the vehicle lost automotive power and stalled in the middle of the highway, and the vehicle was unable to restart. An alert message was sent by OnStar reporting a transmission or engine failure and advised that the vehicle needed immediate service. The vehicle was towed to the dealer where it was diagnosed with a fuel pump module failure. The manufacturer was not notified of the failure. The failure mileage was 24,749
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728124March 30, 2026
ELECTRICAL SYSTEM, LANE DEPARTURE: WARNING
Twice the side detection system failed due to corroded wiring under the bumper which then led into the electrical system failing on side air bag detection/blind zone detection/traction control system/display monitor and blinkers all failing to the point of vehicle not starting. The safety is these features failed which were both safety and stability. Risks occur in becoming stranded and the problem was first noted by dealer to be a poor battery. GM pushed out a "Special Coverage Adjustment' to have the wiring/module kit to be ordered and repaired by a dealer for no charge. Stipulations was within 6 yrs or 80,000 from 'placed in use'. Warning lamps occurred after the corrosion was too far along to be rectified and after the 6n yrs off the lot. Manufacture GM issued the special adjustment but dealership did not provide notice beyond letter at point of failure in vehicle so that twice I have had to contend with this issue and pay in full for the service work performed. The second fail of this wiring system and module was within 3 years of first replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728145March 30, 2026
UNKNOWN OR OTHER
Vehicle warning light, and noise alerts when placing in park. Vehicle does not register PARKED. Vehicle has to be restarted several times and shifter moved in and out of park until registers as parked. When viewed by mechanic, it was stated there has been a recall to contact manufacturer about recall, but none noted on site.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728151March 30, 2026
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
On March 27, 2026, I experienced a complete brake failure while driving a 2021 GMC Acadia in a school zone at approximately 3:00 PM. When I pressed the brake pedal, the vehicle did not respond. I attempted multiple times, including using the emergency brake, which did not activate immediately. The vehicle remained in motion for several minutes in an area with children and parents present. The emergency brake only engaged after approximately 30–45 seconds of repeated attempts. I was forced to steer off the road to avoid a collision. The vehicle had been inspected at a GM dealership on March 16, 2026, just eleven days prior, where the brake system was evaluated and no issues were identified. After the incident, the dealership diagnosed a leaking vacuum pump, which is a component that supports the brake booster system. This failure occurred without warning and created a dangerous situation. I am concerned this may indicate a broader safety defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728147March 30, 2026
ENGINE, POWER TRAIN, VEHICLE SPEED CONTROL
The vehicle has a serious transmission/drivetrain defect that repeatedly occurs when accelerating from a complete stop, especially onto an incline. The vehicle sometimes does not respond at all when the accelerator is pressed and fails to move, even though acceleration is being requested. In one recent incident, it remained stopped for about one minute before finally responding. During these events, the vehicle jerks and shakes severely and fails to gain speed as expected. This creates a major safety risk at stop signs, intersections, and uphill starts because the vehicle may not move when needed and cannot keep up with traffic. The problem has worsened, and during one of these incidents the check engine light came on. I have video evidence showing the loss of response to accelerator input, severe jerking/shaking, and the check engine light illuminating during the same event. The issue has been reported to dealers and GM customer service but has not been properly resolved.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727817March 29, 2026
VISIBILITY/WIPER
I was driving on the highway, and the sunroof was closed and the cloth screen that would allow or not allow sun to come through was also closed. Then out of nowhere there was this explosion sound which scared me so much, I almost wrecked the car and at first, I thought maybe someone shot at my car and shot one of my windows but as I got to the side of the road I realized that none of my windows in the car had been shot and that it was the sunroof and I noticed that cause pieces of glass came into the car from the sides of the cloth barrier. This happened so fast and was so loud that it almost caused me to hit the other car in the lane to the left of me on the highway. Thank goodness I was able to react fast and pull the car back into my lane. I contacted the dealership and they indicated that they had not heard about this before and that I would need to talk with the service department but that it is closed now and not something that would typically fall under warranty. I did check online and see that this is a known issue for this vehicle so I don't understand why it would not be fixed cause it is going to hurt someone at some point. I am trying to get someone to look at it to get it fixed. There was no warning of anything. It just exploded all of the sudden and glass was all over.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727676March 28, 2026
ENGINE
2019 GMC Acadia message: Action Required Steering Assist Is Reduced Drive with care Both power steering and AC affected, check engine light on, engine temperature gauge off
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727230March 26, 2026
POWER TRAIN
The "shift to park" continues to pop up and can take as long as 20 minutes to get it to go off. From what I have seen this is a super common issues for the 2019 models and why there isn't an active recall I am not sure. Getting pretty frustrating when I have read 100s of complaints about the same thing and GM isn't doing anything about it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727317March 26, 2026
POWER TRAIN, ENGINE, ELECTRICAL SYSTEM
I purchased this vehicle in June 2024 as a demo vehicle with approximately 7,000 miles on it. Within one month of ownership, the vehicle began experiencing serious problems that have continued to worsen. The vehicle currently has approximately 34,000 miles, and the issues have been ongoing from the time of purchase through the present. Since purchasing the vehicle, it has been in the dealership multiple times for the same recurring problems, including but not limited to: * Powertrain issues and loss of power * Reduced acceleration while driving * Complete electrical failure while driving * Engine and electrical warning lights repeatedly turning on * Vehicle running excessively hot * Water pump replacement * Replacement of sensors * Thermostat replacement * Ongoing engine and electrical system malfunctions Despite these repairs, the same problems continue to reoccur. Each time I return the vehicle for service, I am informed that it is a “different issue,” even though the symptoms remain unchanged. This strongly indicates a defective powertrain and/or electrical system that has not been properly repaired. The most serious concern occurred while I was driving on public streets, when the vehicle lost acceleration, electrical power shut off, and the vehicle completely shut down, nearly causing me to be hit by other vehicles. This incident created an extreme safety hazard for myself, my passengers, and other motorists. I have made several formal complaints directly with GMC, and more than four case numbers have already been created regarding this vehicle. Despite these complaints and repeated repair attempts, the problems persist. Given the repeated failures, numerous repair attempts, documented safety risks, and the fact that these issues began shortly after purchase, I believe this vehicle qualifies for relief under applicable lemon laws and consumer protection laws. Incident (Critical)Vehicle lost acceleration and electrical power and completely stalled while roads
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726905March 25, 2026
ELECTRICAL SYSTEM
The contact owns a 2015 GMC Acadia. The contact stated that the automatic alert system anti-theft system locked up. The contact stated that the vehicle failed to start. Additionally, the safety sensors in the mirror and the rear of the vehicle became inoperable. No warning lights were illuminated. The vehicle was towed to the local dealer, where it was diagnosed and it was determined that the driver’s and passenger’s side mirrors, and reverse light sensors needed to be replaced. The vehicle was repaired on three occasions, but the failure persisted. The manufacturer was contacted and confirmed that there was no recall for the failure. No assistance was provided. The failure mileage was approximately 20,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726886March 25, 2026
UNKNOWN OR OTHER, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA, BACK OVER PREVENTION:DISPLAY FUNCTION
Infotainment system freezing, screen shaking, touch screen not working, disconnecting from android auto, unable to connect to phone.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726679March 24, 2026
AIR BAGS
The contact owned a 2014 GMC Acadia. The contact stated that while driving at an undisclosed speed, the contact was avoiding crashing into another vehicle when the contact's vehicle crashed into a tree. The air bags did not deploy. The contact stated that some good Samaritans assisted the contact in getting out of the vehicle. The contact stated that the vehicle was totaled when it crashed into a tree. In addition, the contact stated that within 5–10 minutes later, the vehicle was engulfed in fire. The local fire department arrived and extinguished the fire. The contact stated that the vehicle was consumed in the fire. The vehicle was condemned as a total loss by the insurance company. The vehicle was towed to a local tow yard. The contact declined medical transport to the local medical center, however the following day, the contact went to the local medical center. The contact sustained cuts and abrasions on both legs and knees primarily, cuts and abrasions to the right and left arms, a large bruise on the left side of the chest, right side of chest pain, and severe pain in the right shoulder and back. In addition, the contact stated that on February 02, 2026, the vehicle was serviced for an unknown recall repair in which the driver's side air bag was replaced. The dealer was made aware of the failure. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 138,000.
Crash:
Yes
Fire:
Yes
Injuries:
1
Deaths:
0
#11726695March 24, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Seeing the intermittent shift to park messages when the vehicle has been shifted into park and the ignition is turned to the off position. Shifter wire harness jumper & transmission controls A malfunctioning shifter raises fears of potential rollaway accidents, even if such cases remain rare. For anyone who has to park on a slope, this fear can cause serious worry. Yes, there is a service bulletin (19-NA-206) No, this is 1 of the only problems I have had with this. The other issues I have had is the clear coating on the rims are peeling
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726780March 24, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2017 GMC Acadia. The contact stated that while driving at 65 MPH, the check engine warning light illuminated, and the A/C system became inoperable. Additionally, the engine fan activated and remained activated even after the vehicle was turned off. The contact stated that the failure had recurred while driving. The contact related the failure to GM Special Coverage Number: N252508350 (Engine Coolant Thermostat). The vehicle was taken to the dealer, but was not yet 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 90,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726873March 24, 2026
POWER TRAIN, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I see where GMC Acadia is have a recall on transmission and if it’s the description of my two GMC Acadia’s, but when I put my Vin number in it doesn’t have a recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Acadia