GMC Acadia Complaints

5,595 consumer complaints on file.

#11751749July 21, 2026
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that after parking and then attempting to turn off the vehicle, the message " Shift to Park" was displayed. The contact stated that the vehicle was able to be parked and turned off successfully after various attempts, which included restarting the vehicle and engaging the parking brake. The vehicle was not diagnosed or repaired by an independent mechanic or a dealer. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751463July 20, 2026
ENGINE, VEHICLE SPEED CONTROL, ELECTRICAL SYSTEM
My Acadia went into limp Mode displaying low power mode on the screen and wouldn’t start for a couple days after. Lights started illuminating on the dash as abs, traction control, and stanilitrack, then check engine light came on and my gmc app displayed code p2138. I have had since low power and extremely high gas consumption.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751467July 20, 2026
SERVICE BRAKES
Something inside the wheel started smoking and my gmc app displayed low break fluid. I pulled over and had someone come out two days later. The breakpad had uneven wear and the caliper had a broken seal on it which in turn tore the caliper up! This was not a safe situation to have with 4 kids in the car. This car has been one problem after another !
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751472July 20, 2026
TIRES, TIRES:MARKINGS, TIRES:TREAD/BELT
P235/65r18, 106v 3 of the 4 tires are bubbled out lose air and are constantly feeling as if they are hydroplaning with lack of ice water or snow, constantly having to fill the tires with air. One has popped completely and am driving on a spare tire. It is unsafe to drive, 33 of the 4 tpms sensors have quit working as well:
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
#11750306July 14, 2026
SEAT BELTS
The cable that attaches the front driver seatbelt to the base of the seat (left side), suddenly broke when simply buckling the belt.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750345July 14, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, LANE DEPARTURE: WARNING
Shift to park take forever to get it to recognize that vehicle is in park. my lane departure only works sometimes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750445July 14, 2026
UNKNOWN OR OTHER
For the past 4 months after turning off the engine, my vehicle is failing to recognize that it is in Park. I am getting a message on my display stating “Shift to Park”. This is preventing my vehicle from shutting down.
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
#11749833July 12, 2026
ELECTRICAL SYSTEM, SERVICE BRAKES, FUEL/PROPULSION SYSTEM
Transmission causes problems in can be on interstate and be switching lanes and it loses power and wont go takes forever to shift out. It will cut out and you can barely get pulled off side of rd in time. Electrical the battery voltage goes crazy up and down causing vehicle to power surge bad or at night time lights will go out for no reason while driving every now and then you can smell something melting or burning also the engine gets so hot but it's right temperature cooling fan runs constantly even when car is cool.since all the problem with Transmission the suspension is off some how. Its like it's not stable
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749841July 12, 2026
STEERING, ENGINE, ELECTRICAL SYSTEM
[Symptom & Safety Hazard] While driving my 2020 GMC Acadia 3.6L V6, the Driver Information Center displayed the warning: "Steering Assist Reduced, Drive With Care" (SARDWC). Steering effort increased abruptly, the engine temperature gauge dropped to cold/zero, and the HVAC system lost air-conditioning function. The warning and reduction in steering assist presented a safety hazard and increased the risk of a crash. [Diagnostic Findings] Vehicle diagnostics identified DTC P0128 - Engine Coolant Temperature Below Thermostat Regulating Temperature. A GMC Certified Dealer technician diagnosed a failed engine coolant thermostat housing assembly. [Manufacturer Information] GM documentation links DTC P0128 and invalid engine coolant temperature signals to the "SARDWC" condition. GM Bulletin 17-NA-158 states the “SARDWC” condition is caused by an invalid coolant temperature signal and the steering module relies on coolant temperature information for steering-assist compensation. GM bulletin PIT5967 directs technicians to diagnose and repair DTC P0128 when the warning message is present. In Oct 2025, GM issued N252508350 for 2021 Acadia vehicles equipped with the 3.6L LGX engine due to an engine coolant thermostat condition. My 2020 Acadia is part of the same generation vehicle platform and is equipped with the same 3.6L LGX engine. It experienced the same thermostat-related failure symptoms, including DTC P0128 and the "SARDWC” warning. [Reason for Complaint] I am filing this complaint because a thermostat-related cooling-system failure resulted in a steering-assist warning and reduction in steering assist while the vehicle was being driven. Moreover, GM issued N252508350 for 2021 Acadia vehicles equipped with the 3.6L LGX engine due to the same engine coolant thermostat condition, yet similarly affected 2020 Acadia vehicles are not included. NHTSA should investigate whether additional 2020 vehicles are experiencing the same failure sequence and resulting safety risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749867July 12, 2026
UNKNOWN OR OTHER
When trying to put car in park a "shift to park" notice appears on dashboard not allowing the car to be turned off. It takes multiple attemps be able to get the car into park and turn OFF. This has been an ongoing problem for several years and reported to the dealer. To date the dealer tells me there is nothing wrong with the car. Battery has been changed multiple times.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749564July 10, 2026
VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR
The contact owns a 2009 GMC Acadia. The contact stated that while driving at various speeds, the front driver’s side and passenger’s side exterior mirrors moved out of place and failed to remain in a set position. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The contact stated that the vehicle was garage-kept and was concerned about the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 54,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749244July 9, 2026
UNKNOWN OR OTHER
I purchased vehicle used 2 years ago last year. I noticed the air conditioner was not cooling. I summed it up too, and extremely hot summer.This summer I did the same thing.I took it in immediately. Catastrophic, I think I bought it like this. It fell apart, the air conditioning compressor fell apart.There is like shrapnel through everything, and they have to go through and clean everything out.It's gonna cost me over two grand. But it only be in 40000 miles on it. I understand it's a twenty nineteen, but owner said at forty thousand miles.This should never happen.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749319July 9, 2026
POWER TRAIN
The contact owns a 2017 GMC Acadia. The contact stated that while the vehicle was parked on an incline with the engine turned off, the contact's toddler was able to shift into drive(D), and the vehicle rolled backwards, hit a light pole and a basketball stand, causing damage to the front driver-side door. No police report was filed, and no injuries were reported. The contact was unable to shift back into park(P) and was forced to start the vehicle in neutral(N). The contact was then unable to shut off the vehicle as the gear shifter was no longer in park(P). Upon investigation, the contact learned that it was necessary to manually flip a switch underneath the gear console for the vehicle to register that it was in park(P). The contact initially took the vehicle to the independent mechanic but was referred to the manufacturer for assistance. The manufacturer was notified of the failure, and the contact submitted a claim with pictures and videos of the failure. The contact was then instructed to take the vehicle to a dealer for an inspection. The contact was later informed by the claim manager that the claim would be denied, and no further assistance was offered. The vehicle was not repaired. The failure mileage was 99,968.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11749323July 9, 2026
STEERING, UNKNOWN OR OTHER
Steering assist code pops up and then the temperature gauge goes down and the air stops working and the screen in the cars starts going all crazy. Shift to park code keeps coming up and keeps all electronics on in car
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749380July 9, 2026
POWER TRAIN
The contact owns a 2017 GMC Acadia. The contact stated that after shifting into park (P), the vehicle failed to shut off because it failed to recognize that the gear shifter was in park (P). The "Shift To Park" warning message was displayed on the instrument panel. The contact jiggled the gear shifter button several times until the vehicle responded as intended and turned off. The contact stated that the failure occurred intermittently but became frequent. A dealer and the manufacturer were notified of the failure and informed the contact that there were no recalls on the vehicle, and a diagnostic estimate was provided. The vehicle was not repaired. The failure mileage was approximately 30,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749432July 9, 2026
UNKNOWN OR OTHER
While driving the temperature gauge drops from normal to cold , the dash displays " steering assist reduced" and the fan is very loud . My mechanic said the thermostat and or sensor needs to be replaced . When he resets with the reader its good for about a week and temperature gauge is normal. After seven days it repeats I only have 40,000 miles on the vehicle and its a 1,400 dollar job. I believe this should be a recall because i have seen a lot of the same complaints in this forum and what about the people who have the same problem but don't complain ?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748965July 8, 2026
SEAT BELTS
the flexible steel cable connecting the seat belt to the seat separated and broke resulting in no way to use the seatbelt/connecting the seat belt to the connector on the seat.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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