GMC Acadia Complaints

5,595 consumer complaints on file.

#11763346September 10, 2026
SERVICE BRAKES
While driving my 2020 GMC Acadia SLT AWD Turbo with my young daughters in the vehicle, the brake pedal suddenly and sporadically lost all hydraulic pressure and sank nearly all the way to the floorboard. The vehicle would only gradually roll to a slow stop. Simultaneously, the dashboard illuminated with ABS and Service ESC notifications. After turning the vehicle completely off and restarting it, the braking system temporarily reverted to normal function before randomly failing again on a subsequent drive. The vehicle was brought to a local brake shop where it was dangerously misdiagnosed, and it is currently at a GMC dealership for an emergency teardown. Previously, without any warning, the vehicle would also experience a brake failure upon backing out of my garage. Once the brake was immediately pressed again, it would work. This intermittent loss of total stopping power constitutes a severe, life-threatening manufacturing defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11763026September 9, 2026
AIR BAGS
The contact owns a 2014 GMC Acadia. The contact stated that while driving at an undisclosed speed, the traction control, Stabili-Trak, and the air bag warning lights were illuminated. The vehicle was taken to an independent mechanic where the contact was informed that the failure was associated with a recent air bag replacement recall repair. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer; however, the dealer declined to inspect the vehicle. The contact was informed that the failure was not associated with the recall repair. The contact stated that the failure had occurred on the same day that the vehicle was repaired under NHTSA Campaign Number: 23V334000 (Air Bag). The failure had occurred while driving from the dealer lot. The manufacturer was contacted and made aware of the failure. The failure mileage was approximately 178,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11762800September 8, 2026
UNKNOWN OR OTHER
Vehicle continued to have Shift to park message when car was already in park. This is a known issue in some other GMC vehicles. Safety issue that the battery could drain or the car could roll unexpectedly. This message repeatedly displayed on the vehicle. The dealer confirmed the problem and performed the repair. Repair order number is XXX for $549.17 on XXX at Boucher Buick GMC of Waukesha [XXX].While there isn't a recall on file for this specific VIN number, I believe it should be included in the recall and I am requesting reimbursement. 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
#11762306September 5, 2026
POWER TRAIN
Transmission torque converter required replacement
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11761817September 3, 2026
SERVICE BRAKES, BACK OVER PREVENTION: WARNINGS, FORWARD COLLISION AVOIDANCE: WARNINGS
Dropping my children off at school, 4 lights came on on the dash. Two messages came across my dash as well. Service esc service abs. EBCM master cylinder needed to be replaced at local GMC dealership.My brakes were failing…This is a known safety issue by GMC and there’s no recall!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11762039September 3, 2026
POWER TRAIN
Vehicle ran out of fuel and became disabled in an active roadway/exit ramp. The vehicle retained 12-volt electrical power and the dashboard and electronic controls remained operational. With the brake pedal depressed and the ignition/electrical system on, I attempted to shift the transmission from Park to Neutral so the vehicle could be pushed out of traffic. The vehicle repeatedly displayed “Conditions Not Correct for Shift” and remained locked in Park because the engine was not running. There appears to be no driver-accessible mechanical/manual override that allows the transmission to be placed in Neutral when the engine cannot run. As a result, a disabled vehicle with functioning electrical power can remain physically immobilized in a live traffic lane, creating a collision hazard and preventing occupants or bystanders from moving it to a safer location. This condition could occur not only from running out of fuel but potentially from any engine failure that prevents the engine from running. I believe the inability to place a disabled vehicle into Neutral under these circumstances presents a safety hazard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760896August 31, 2026
SEAT BELTS
I am unknown of what the issue is with the seatbelts on all seats will not properly lock.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760899August 31, 2026
UNKNOWN OR OTHER
I’m getting a shift to park on my dash after it’s already in park. This causes the break to get stuck when driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760606August 29, 2026
ENGINE
Oil leaks from the timing cover on the top and bottom.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760423August 28, 2026
ENGINE
Technician told me the engine "grenaded itself". "Cylinder #4 melted into the side walls of the cylinder wall caused by air to fuel mix ratio controlled by the ECU failure to mix appropriately." My family and I were traveling for Easter and were stranded on the side of the highway. I had a private repair shop (Greenville Auto Clinic LLC) confirm as well as the local dealership Greenville Chevy. The vehicle required an engine replacement. I did contact GMC's Zone Manager out of Atlanta, GA for assistance, he reduced the bill from over $10,000 down to $6098. There was no error messaging, only an engine that would not respond to the accelerator pedal. The engine would try to accelerate, but struggled to the point it would die when I applied too much pressure on the gas pedal.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760019August 27, 2026
ENGINE
Engine coolant thermostat failed open. Resulting in reduced steering capabilities, and no AC.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760081August 27, 2026
POWER TRAIN
My Shift To Park senor come on often and wouldn't let me turn the vehicle off. I have taken to dealership for repair. Long wait and because parts are back ordered due to numerous vehicles having this same problem. This has left me stranded in my vehicle and not able to turn it off and leave the vehicle. I feel this is unsafe and should be handled on a recall. I am now without a vehicle for who knows how long?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#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
#11758890August 23, 2026
STEERING, ENGINE, UNKNOWN OR OTHER
Received a power steering reduced notice when starting the car, noticed shortly after driving the temperature gauge had not moved from its resting position. A few trips later it still had not moved and the check engine light came on. Mechanic looked at it said it may be a sensor quoted $1k to fix. A few days later it randomly started working and the light went off so I did not have it fixed. About 4 months later the same code displayed on the dash with the same issues. This time I noticed the ac would not work either it only blew out hot air. Also the fan under the hood turns on as soon as the car is started. Been about 3 days and it started working again out of nowhere.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758928August 23, 2026
POWER TRAIN, ELECTRICAL SYSTEM, ENGINE
2015 gmc Acadia, vin ending 7457,p2635,stuttering/hesitation and engine stalling when Arizona temperatures exceed 100* f , and mechanic advising that the condition corresponded to a known gmc issue for which they could not obtain an applicable corrective part / repair
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
#11757610August 18, 2026
POWER TRAIN
On XXX at 1:56pm, I took the vehicle to Jiffy Lube service center #810 for the "Quick Oil Change Service" which includes checking and filling the Tranmission/Axle fluid. Per the attached receipt the Transmission/Axle fluid was "OK", and the next service was recommended after 5,000 addtional miles from the then current mileage of 153,317. On the morning o XXX, the car began experiencing issues identical to vehicle recall NHTSA ID Number: 20V668000. The check engine light turned on and the vehicle could maintain proper propulsion. On XXX at 3:25pm EST, I took the vehicle to AutoZone store #01664, whose "FixFinder" computer diagnostic inicated code PO700 "Transmission Control Module Requested MIL Illumination". On XXX, I had the car towed to a private mechanic who inspected the Vehicle and indicated that the transmission had "no fluid" despite having the fluids verified by Jiffy Lube on XXX. The mechanic suggested there may be a GMC service issue that required GMC remediation to due faulty internals which resulted in the transmission fluid leakage and subsequent triggering of the transmission computer module and related propulsion failure. As of today XXX, the vehicle is experiencing the same condition as indicated in vehicle recall NHTSA ID Number: 20V668000, which is creating additonal risk of vehicular accident/crash and vehicle fire in the presence of the ignition source. The milage is now 155,520. I am requesting this vehicle be serviced as part of recall NHTSA ID Number: 20V668000, you can verify from the vehicle registration from the Divison of Motor Vehicles and via CarFax that I purchased this vehicle used, the vehiclee has at least 1 (maybe 2) prior owners. I am requesting the vehicle (VIN [XXX]) receive the mandated recall service which will resolve the afformentioned issues and remove the related risks for myself, my passengers and all other motorists who are sharing the road. 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
#11757418August 17, 2026
ENGINE
The contact owns a 2019 GMC Acadia. The contact stated that while driving at an undisclosed speed, the engine seized, with several unknown warning lights illuminated. Additionally, the battery low and steering assist warning lights were illuminated. The contact's minor children were occupants in the vehicle during the failure. The tow truck assistant arrived. The tow truck driver assisted with restarting the vehicle. The contact was able to restart the vehicle. The vehicle was taken to Firestone; however, the failure was not duplicated. The contact stated that a portable diagnostic tester was attached, but no error codes were displayed. The failure reoccurred. The vehicle was taken back to Firestone, where it was diagnosed with a failed START/STOP module. The contact was informed about Technical Service Bulletin: 21-NA-139. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 81,126.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757233August 16, 2026
UNKNOWN OR OTHER
Sunroof shattered driving on the interstate. Never saw a rock or anything. I think it shattered due to pressure and temperature changes.
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

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