GMC Acadia Complaints

359 consumer complaints on file.

#11759335August 25, 2026
SERVICE BRAKES
While driving the brake vacuum pump exploded leading to catastrophic brake failure. My husband was driving and was able to stand on the brakes to get the car to stop, but had i been driving, I am not strong enough to have stopped the car. I have 3 children with my youngest being 1. If this had happened with me and my kids, we could have had a major wreck and/or DIED! GM is aware of the brake vacuum pump issues but does not have a recall on the part. The braske assist light did not come on the dash until brakes were lost.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758810August 22, 2026
SERVICE BRAKES
I was driving my 2025 GMC Acadia Denali on [XXX] with cruise on. Suddenly sound and banner notifications were telling me that I had no brakes. I immediately hit brake to break cruise and vehicle went faster. I managed to get cruise off from steering wheel. Put flashers on and took foot completely off gas. I was very fortunate that I didn’t hit someone or that no one hit me. After about 2 miles, I was able to pull in an empty church parking lot and get stopped. After getting stopped I was 2.4 miles from [XXX]. I was towed to GMC dealership in Montgomery, AL and diagnosed with defective master cylinder and no brakes. Very concerned because GMC has not issued a recall because the master cylinder failure has occurred many times before. 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
#11757181August 15, 2026
AIR BAGS, SEAT BELTS
Since we purchased our 2022 Acadia 6/24/2022 we have had the warning "Service Safety Restraint System" pop up randomly. We have mentioned it numerous times over the years when the vehicle has been in for routine service at our local dealership. They have never been able to determine the cause as no service code ever shows up for them. Today in addition to the warning the red air bag warning light also lit up briefly. The warning has popped up 2x in the last 2 weeks again with today being the only time we noticed the red light as well. We are now more concerned about the safety of our vehicle. (We will be on vacation now through 8/25 & would be available after that date for any contact)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#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
#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
#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
#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
#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
#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
#11751305July 18, 2026
FUEL/PROPULSION SYSTEM
I have seen numerous complaints for this same issue. My 2021 Acadia with 31,600 miles failed to start when parked in garage. It turned over just fine but wouldn't fire as if it wasn't getting any fuel. I had it towed to my regular mechanic. He troubleshot it and told me it was the "Fuel Pump Power Control Module". He said he could replace it but it would have to be programmed by a GM dealer as he didn't have the equipment to do that. So I had it towed to the local GMC dealer. Two tow bills equal $360. There is a recall for this issue. It is called "Emission Recall N252516900, Fuel Pump Power Control Module". part number 13554820 I have yet to receive a recall notice. I have seen mentioned in several of the other complaints that I have read that many of the service employees say that this has been an ongoing issue for several of the GM vehicles. Hopefully I will get a recall notice soon and be able to get reimbursed for the cost of the repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750108July 13, 2026
SEAT BELTS
2024 GMC Acadia grounded at dealership for 3+ weeks due to unavailable driver seat belt buckle (Part 26522477), rendering a brand-new vehicle legally un-driveable due to primary restraint part constraints. The buckle will not latch, causing the seat belt to be rendered inoperable. The problem was reproduced by the dealership, and the replacement part is backordered.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750068July 13, 2026
ENGINE
“Steering Assist is Reduced” warning, P0128 code, thermostat-related symptoms, increased steering effort or other safety concerns while driving. This issue required increased steering effort and affected my wife's driving ability to respond to changing traffic conditions. This is most likely a faulty thermostat housing assembly. This has been well documented temperature gauge problems, cooling system issues, and related warning messages. Our GMC Acadia is a 2022 AT4 with 53,500 miles. GM recently issued Special Coverage N252508350 for 2021 Acadias with the 3.6L LGX engine affected by thermostat housing issues. Owners of other model years reporting substantially similar symptoms remain responsible for the repair cost. Please investigate this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746874June 27, 2026
ENGINE, LANE DEPARTURE: BLIND SPOT DETECTION
Blind spot monitor goes off for everything. Engine has chirping noise. Brand new
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746671June 26, 2026
SERVICE BRAKES
My brake pedal got stiff when I was driving. I had zero control of my brakes. I was informed by a GMC dealership that my BRAKE BOOSTER blew up causing my brakes to stop working and metal shrapnel to be sent into my engine. My 2021 vehicle is a complete loss. GMC has done NOTHING to help me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745670June 22, 2026
SUSPENSION
The contact owns a 2021 GMC Acadia. The contact stated that while driving at various speeds, the vehicle was unintendedly drifting to the right. The vehicle was taken to Dally Tire Company, where it was diagnosed with rear links failure and misalignment. The vehicle was not repaired. The vehicle was taken to the dealer, and the contact was informed that the VIN was not under recall. The dealer scheduled an appointment and provided an estimate for the repair. The manufacturer was not yet contacted. The failure mileage was approximately 42,200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745606June 22, 2026
SERVICE BRAKES
At low speeds the brakes squeal horrendously. We have taken the vehicle to the dealer multiple times and each time they state that the brakes are fine. A vehicle with this low of miles should not have squealing brakes since new.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743627June 11, 2026
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: WARNINGS
Today, June 11, 2026, my wife and 9 month old baby were on their way home from running errands in town when the vehicle started to violently shake, becoming frightened my wife tried to apply pressure to the brakes. When she pushed down on the brake pedal nothing happened and the pedal hit the floor. Our brand new 2025 GMC Acadia AT4 had just suffered catastrophic brake failure. So she pulled off onto the side of the road in hopes the uneven terrain would slow her down just enough to put it into park. Luckily enough it did. If it would have been 10 seconds later she would have been on a one way bridge where the speed limit is 60mph with no brakes. Four days prior to today on June 07, 2026 I sent a message to the individual that I bought the car from at the GMC dealership and told him that we had warning lights come up on the dash. He had me try and reset the screen but nothing happened. I asked when we could get it into a shop so it could be looked at he said that he would have someone reach out and schedule a time. I proceeded to ask if we were ok to drive the vehicle until then.To which he responded "If the vehicle isn't giving you issues mechanically, you should be good". Fast forward to today June 11, 2026 my wife is driving and has catastrophic brake failure. The vehicle was then towed by roadside assistance to the GMC dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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