2021 GMC Acadia Problems & Complaints
Real owner complaints and problems reported to the National Highway Traffic Safety Administration (NHTSA). View common issues by component.
VIN Decoder
139
Complaints Reported
Complaints by Component
FUEL/PROPULSION SYSTEM
15 complaints
My Acadia, 2021 has just 36011 miles. Car sputtered a few times like it was running out of gas and stalled as I was driving home in rush hour traffic. I couldn't even get it off the road. No warning lights or advance warning. Waited 3 hours for AAA (told 20 minutes) and then towed to dealer. Tow person could not get it into neutral so they used the sleds to ramp it up onto the flatbed. The dealer replaced the fuel module board which seems to be a common problem with these cars. Dangerous in that I thought someone might rear end the car while sitting in the single lane. Look on the Acadia forum and you'll see this is common and no recall has been issued and it sounds like it could very well happen again.
Aug 25, 2025
I was driving down a heavy traffic expressway with a lot of semi traffic and the SUV started puttering. All of a sudden it died, the check engine light came on and I started to slow down quickly. I was in the middle lane of 3 lanes going 70 mph. VERY LUCKILY, I was able to pull to the right and barely made it onto the shoulder. The SUV had $28,972 miles on it. It was more that 100 degrees outside at the time. I called for a tow and had to wait over 2 hours. My car was nearly hit many times during the wait. The whole situation was very dangerous. What if my children were in the car at the time???? The tow truck driver was nearly killed while trying to get it on the truck. He had to call the police to block the lane. He stated that he could not put it in neutral and had to do something else with it to get it up. It was towed to the dealership where I purchased it. They did the diagnostics and said it was a fuel pump module issue. Less than 30,000 miles and this happened. I was planning to take a trip through the mountains, but at this point I do not feel safe at all in this vehicle. THIS SHOULD BE A RECALL IF GMC IS AWARE OF THIS ISSUE!!!!!
Aug 21, 2025
Driving on rt 95n in Ga. Going 70 mph and vehicle just bucked and shut off. At the time I was in the middle lane and almost got hit by a tractor trailer while I was trying to get to the right side of the road. Called general motors roadside assistance and they supplied a tow company to tow me to a dealer in Ga. About 35 miles away unfortunately it was Sunday dealer was closed and I had to get a taxi to take me to a hotel with all my luggage. On Monday morning when the service dept. Opened they advised me the fuel pump module had failed and would be replaced. Luckily most times when vehicles shut off with push button electronically shifted transmissions you can't put the vehicle in neutral to move or tow but after many tries it went to neutral(according to the tow driver) also after researching my vehicles failure I found this is a wide spread problem among many gm suvs and trucks! Hopefully a recall is in the future before someone gets killed!!
Jun 26, 2025
Car stalled at intersection and unable to restart. The car would not go into neutral to get the car out of the roadway. The fuel pump driver or fuel pump fail with 41k miles. The condition is very unsafe.
May 24, 2025
While driving, the vehicle shut off without warning. It was in-traffic when this occurred and subsequently blocked traffic. I tried to restart the vehicle many times. It would start and then die within a few seconds. Since the vehicle would not remain running, it was impossible to shift out of the "park" position. Since it was in "park", the vehicle could not be readily moved out of traffic. This failure is a safety hazard! The vehicle was towed from the scene. The dealer diagnosed the problem as the "Powertrain control module lost communication the the fuel pump driver module causing no fueling to engine from low pressure fuel pump U18A..." The fuel pump control module had internal communication circuit failure. GMC module 13554820 was replaced.
Jan 06, 2025
+ 10 more complaints for this component
ENGINE
13 complaints
I am submitting this complaint regarding ongoing mechanical and electrical issues with my 2021 GMC ACADIA that have been occurring intermittently for approximately the past year and a half. The primary issues involve the coolant temperature sensor, thermostat system, engine cooling fan, and dashboard warning messages. The vehicle repeatedly experiences problems related to the coolant temperature sensor and thermostat. During these episodes, the engine cooling fan continues running even after the vehicle has been turned off, sometimes for an extended period of time. In addition, the dashboard frequently displays the warning message: “Steering Assist is Reduced – Drive With Care.” These warning messages and symptoms occur off and on without consistent resolution. The vehicle has already undergone repairs, including replacement of the radiator, yet the problems continue to return. Despite previous service attempts, the underlying issue has not been permanently corrected. The recurring nature of these problems raises concerns about the reliability, safety, and dependability of the vehicle, especially considering the steering assist warning and possible overheating or electrical system concerns connected to the cooling system malfunction. The repeated failures have caused significant inconvenience, concern for safe operation of the vehicle, loss of confidence in the vehicle’s reliability, and ongoing disruption due to repeated repair needs. I am requesting a thorough diagnosis and permanent repair of the coolant temperature sensor, thermostat, cooling fan system, and any related electrical or control module issues contributing to these recurring problems.
May 09, 2026
Bought the acadia in june of 2021, in december of 2022 had to have the radiator replaced due to it leaking. This was found on routine maintenance and was not having any issues whatsoever. I received no alerts on my dash such as a check engine light. Fast Forward to March 2026, I received a message of "steering assist reduced. drive with care." The engine seemed like it was still running despite the car being off. This was happening intermittently and definitely not every time I drove. I made an appointment for the regular oil change and to have this message investigated. Initially they told me it was the temperature regulator, however, they put a new regulator on and tried to re-pressurize the system. The system failed to re-pressurize due to the radiator leaking AGAIN. Of course, there was a 2 year warranty on the radiator after it was replaced initially and now we are about a 1.5 years outside the warranty.
May 06, 2026
Car was taken in for an oil change at 62k Miles. Dealer advised that it needed a radiator replaced. At 64k miles it was brought into the dealer for warranty work due to a failing thermostat. While being diagnosed, we were told not only the radiator needed to be replaced, but the oil cooler also needed to be replaced. So a 5 year old car with just over 60k Miles had the thermostat/sensor fail and need to be replaced. A radiator fail and need to be replaced and and an oil cooler fail and need to be replaced. Vehicle has been at a GM dealer for all maintenance. No crashes or reasons these parts should fail. Vehicle has never towed anything to but any sort of strain on the cooling system.
Feb 18, 2026
Been happening for a year and a half. Muffler is very loud and rattles constantly. Getting worse over time. There is a current recall but my vin isn’t included even though my car is having the same issue.
Jan 21, 2026
VEHICLE'S ENGINE INCURRED COOLANT TEMPERATURE ISSUES, SET DTC CODE, AND COOLING FAN RAN AFTER ENGINE WAS TURNED OFF. DEALER DIAGNOSED AS THERMOSTAT FAILURE AND COMPLETED REPAIRS. DEALER CHECKED AND FOUND NO SERVICE ASSISTANCE FOR REPAIR EVEN THOUGH THERE WAS A BACK ORDER FOR REPLACEMENT PARTS AND WAS SECURED THROUGH DEALER IN DETROIT CURRENT NHTSA ID NUMBER 110243390 / MFG COMMUNICATION # N252508350 REFERRING TO 3.6 V-6 ENGINE. GMC DECLINED ANY MONETARY ASSISTANCE TOWARDS REPAIRS WITH 76278 MILES I ALSO OWN A 2020 CHEVROLET BLAZER WITH A 3.6 V-6 ENGINE THAT EXPERIENCED SAME FAILURE PAID $400 DEDUCTABLE TOWARD REPAIR
Nov 25, 2025
+ 8 more complaints for this component
ELECTRICAL SYSTEM
10 complaints
Odometer Fraud. The contact purchased a 2021 GMC Acadia. The contact discovered a mileage discrepancy after the purchase. The vehicle was a dealer sale. At the time of purchase, the mileage was approximately 29,000. The contact attempted to trade in the vehicle, and the purchasing dealer checked the VIN and retrieved a Carfax Report. The Carfax Report indicated that the mileage on the Title on 11/04/2024 was 58,000; however, on 02/04/2025, the mileage was 28,000, and the vehicle had been in an accident in the past.
Feb 04, 2026
The infotainment center/and On Star alert systems ( crash detections / SOS ) No access to anything in the infotainments center along with most of the safety setting not alerting due to and over the air update failure. yes is available for inspection upon request. all On star safety features are not working if a crash were to happen i would not be able to get help if i was injured. Yes and it is ongoing. BY a GMC certified dealer. No.
Nov 25, 2025
The fuel pump control module failed, 2021Acadia Denali First time, 9/22/21 8073 miles, the car was parked at the residence under the car port, when needed, the car would not start. No check engine or other indicators. Car was towed to dealer for repairs under warranty. Second time, 10/6/23 31879 miles, we were driving the car on a rural road, 55 mph speed limit with no shoulders when the car stopped in a curve. Had to flag down cars to keep them from hitting us for an hour till the wrecker loader it on the truck to take back to same dealership for warranty repairs. Third time, 7/29/25 48199 miles, we were again on a rural road 55 mph speed limit when the car stopped with my 71 year old wife alone in the car, again in a curve. This time there was a check engine light. I drove my truck to pick her up and assist her until the wrecker came. This time with luck I was able to restart the car and I followed her to our home where the tow truck picked it up and brought it to the same dealership for the third time for repairs under warranty. All three times the culprit was the fuel pump control module. Each time it was the same code in the ECM. Each time the dealership said they did a full check on the fuel system, pump, etc. and only replaced the fuel pump control module.
Aug 04, 2025
The Radio in my 2021 GMC Acadia had to be replaced due to an UPDATE Failure. I had to pay $221.32 for diagnostic and $1,580.18 for a new Radio. My Husband and I are the original owners of the 2021 GMC Acadia. My Dissatisfaction is why are some GMC products under recall for this issue but my 2021 GMC Acadia not part of the recall. The Hands free calling was not working, the GPS and also affected the back up Camera. all of these . a response is requested
May 30, 2025
While driving down the interstate at 70mph+, the instrument panel went black and restarted multiple times. The car continued to stay at a sustained speed, but I was unable to control anything or see how fast I was going. It appears as if the car has shut off, but it isn't. It also affects the lights. It has happened multiple times with no known cause. When I brought this up at the dealership, they said that it would be an $80 diagnostic fee and unless they can replicate the problem they can't do anything about it because it doesn't throw any error codes. There was another women in the dealership the same time as me with the exact same issue. No fix offered. Looking online and talking to others this seems like a common issue that GMC is ignoring.
Dec 05, 2024
+ 5 more complaints for this component
SERVICE BRAKES
10 complaints
ABS Modulator failed leaking oil. Loss of braking Repair service found the same problem. Part was scrapped.
Nov 16, 2025
I was driving down the road and all the sudden my breaks locked up. Like I had to stand on the break with both feet for it to barely stop. After getting it to the repair shop they said my vacuum pump exploded. My problem is it’s very well taken care of car and absolutely no warning light was on. I had no warning at all just all the sudden wouldn’t stop. Now I’m 7,600 in the hole because of this and very upset my not even 5 year old car is having these problems.
Apr 30, 2025
Front right brake hose was entangled around the front drive shaft and tore the brake line apart causing catastrophic brake failure. Car had only 19000 miles on the odometer odometer.
Aug 17, 2024
Breaks make loud noises when cold. OEM PADS and ROTORS. New with 8k of miles
Apr 27, 2023
Brakes will start Grinding on front wheels
Apr 16, 2023
+ 5 more complaints for this component
POWER TRAIN
8 complaints
Had vehicles looked at twice and serviced once for the transmission slipping. No issues were found when looked at and light was deleted. Took to another mechanic who drained and refilled transmission. Transmission still slips after service. This happens at acceleration and continues til 3rd gears where it jerks in between gears. Stops while driving continuously, the starts up again if stopped for any reason.
Feb 10, 2026
Transmission feels like it’s slipping, almost like a jerky shift from any stop, seems like a common issue and should be recalled!
Nov 06, 2025
*Transmission or torque converter. *Vehicle shuddering or shaking at low speeds or when shifting. *Studders while trying to drive fromstop. Can casue accident. *No check engine lights or any warnings prior to failure. *Did not accuse anything when checked by diagnostice tool. *Issue started in Sept but is ongoing
Oct 08, 2025
Received message "Steering assist is reduced. Drive with care". This is related to a faulty thermostat and temperature sensor.
Sep 22, 2025
Driving out of state. My 2021 Acadia with 41,172 miles. When pushing the gas to go there is slippage when trying to accelerate. MY car went automatically into neutral saying transmission and then not start. After a rest period it would start then repeat the same issue. In bumper to bumper traffic on I75. The most Terrifying & UNSAFE place to be at 75 to 80 mph. We happened to be driving up on construction and slow down traffic. When the car stalled. Towed it to a transmission place because of code. They replaced the DTR1 PCM.
Jul 05, 2025
+ 3 more complaints for this component
UNKNOWN OR OTHER
7 complaints
Rear view camera won’t display when out in reverse. Also, when the camera does come on, it’ll flicker off and on
Apr 09, 2026
My car suddenly out of the blue started overheating. By the time I could get stopped safely and turn the car off the engine fan kept running to try to cool it down. I’ve never had any issues with my car. It only has 47,000 miles on it. I now have to have it towed to a mechanic shop to get diagnosed, but I’m hearing that it’s probably a thermostat and that the GMC Acadia’s are famous for that being a problem. I’m not sure why GMC would not do a recall on this part! this is an extremely expensive fix.
Jan 04, 2026
Getting a pop up that says “steering assist reduced”. Temp gauge drops completely. AC won’t work and fan kicks on
Nov 24, 2025
The exhaust resonator failed only a few hundred miles after warranty (60,300) and not covered by dealer under warranty. It creates a noise and reduces power/performance, which could inherently create a safety concern. The vehicle was inspected by an independent service center. The following code for the rattle noise is PIT5863.
Feb 26, 2024
The fabric on my headliner/ceiling is coming unglued or the clips are not holding it. It is a danger to my driving the car as it is continually loosening; which could potentially fall while I am driving the car. It is making an irritating squeaking noise which distracts my concentration from driving carefully. I took the car to Walker GMC in Alexandria, Louisiana. The mechanic and the service advisor both told me GMC has issued an instruction form on how to fix this problem as GMC has had complaints with this happening to the Acadias. I contacted GMC customer service. They will not let me know if they will cover the cost of the repair until I get an estimate. Walker is wanting to charge approximately $188 for the estimate. Since this is a safety issue, I am reporting this problem to your agency so that others may be protected and GMC will take care of this problem.
Feb 05, 2024
+ 2 more complaints for this component
AIR BAGS
6 complaints
No matter what speed I am driving at or whether or not there is a passenger my service safety restraint system light comes on randomly and shuts off randomly. I called the dealership and they brushed it off saying it just means the airbag wont deploy if I were to get into an accident. Great thanks that makes me feel real safe! I see several people complaining about this as well and think it might be time to look into what the problem is and do a recall.
Jun 27, 2024
Airbag light on dash comes on solid. Dealership had vehicle for 3 days and repair made to seat belt tensioner, days later, airbag light returns on dash. Other GM vehicles were recalled for airbag problems but maybe should include the Acadia.
Feb 27, 2024
The vehicle was traveling at a very low speed in a parking lot and impacted a light pole. All front airbags deployed and the drivers steering wheel airbag deployed severely breaking the drivers arm, causing shoulder injuries, and neck injuries. The occupant would have been completely fine had the airbags not deployed.
Jan 20, 2023
October 2021 warning light service service seat restraint system. Schumacher Lake Park FL replaced SIR module. Mileage 3741 Took 2 weeks to repair. October 2022 Warning light service seat restraint system. Mileage 7180. Vehicle at Starling GMC Stuart FL for 2 weeks effective this coming week - Nov. 7. Airbag module issue again.
Nov 05, 2022
The contact owns a 2021 GMC Acadia. The contact stated while driving approximately 30 MPH, the vehicle started making an abnormal dinging sound. The contact stated service restraint system warning message was illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the SDM module replaced. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 21V702000 (Air Bags) however, the VIN was not included. The manufacturer was not informed of the failure. The failure mileage was approximately 16,000.
Jan 04, 2022
+ 1 more complaint for this component
ELECTRICAL SYSTEM,UNKNOWN OR OTHER
5 complaints
The camera system has failed. The screen is black and there is an exclamation point and a camera on the screen.
May 02, 2026
On numerous occasions the key fob is not detected and locked out of vehicle. Key fob notice on panel saying it’s not detected while driving. Took it to Jim Causley GMC dealer several times and then they kept vehicle for a week unable to duplicate and sent me on my way. This is still happening with no help.
Apr 25, 2025
While driving all displays, gauges, screens shut off. Unable to determine speed or anything. Car still drives but there is zero driver feedback. System will come back on and the it will happen again. Has been going on for 2 years. Dealer unable to determine the issue.
Mar 27, 2025
Vehicle has previously been brought in to GMC dealership at least 2-3 times for the dash turning on and off while driving. Started happening around 5,000 miles here and there. First took it in just over 7,000 miles as it was happening more and more frequently. It was last in for the issue on 2/6/23. The dash turned completely off WHILE driving going approx 45-50 mph, is not turning back on, unable to see speed while driving.
Feb 25, 2023
On at least 3 occasions, my vehicle’s locks have malfunctioned and I’ve been locked out of my car with one incident being locked out in the rain. Upon approaching my vehicle and using the unlock button on the outside of my door, I was unable to access my vehicle. Then trying my key fob and app to unlock, with all attempts unsuccessful. The back hatch of the vehicle would open, so my daughter had to crawl through to manually open the door. Once the vehicle was started, once put in drive, the vehicle would not lock. As stated, I can confirm three dates this has happened and that I’ve contacted my local dealer. I am pretty sure it’s happened one other time but I can not remember the date. The dealer would only look at it once and could not find anything wrong because the problem did not happen in the short time my vehicle was there. I do have video of at least one instance that I can provide.
Nov 02, 2021
FUEL SYSTEM, GASOLINE
3 complaints
The contact owns a 2021 GMC Acadia. The contact stated that while driving approximately 30 MPH, the vehicle started running rough before the vehicle stalled. The contact attempted to restart the vehicle, but the vehicle failed to restart. There was no warning illuminated. The vehicle was towed to a local dealer, where it was diagnosed and determined that the fuel pump module had failed and needed to be replaced. The dealer informed the contact that the part to do the repair was on backorder. The contact researched online and associated the failure with NHTSA Campaign Number: 20V639000 (Fuel System, Gasoline); however, the model year and VIN were not included in the recall. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 46,000.
Feb 19, 2026
The contact owns a 2021 GMC Acadia. The contact stated that while the vehicle was parked, the vehicle started, and the contact exited the vehicle and ran into the house for a while. The contact stated that while reentering the vehicle, the contact noticed that the check engine warning light was illuminated. The contact was employed by an independent mechanic, and the vehicle was driven to the place of employment. The independent mechanic attached the mobile diagnostic tester to the vehicle and retrieved DTC: P023F, which indicated fuel pump secondary circuit failure. The contact was advised that the fuel pump module needed to be replaced. The vehicle was not repaired. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 21V422000 (Fuel System, Gasoline); however, the VIN was not associated. 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 78,200.
Jan 21, 2026
The contact owns a 2021 GMC Acadia. The contact stated while driving 75 MPH, the check engine warning light illuminated. Additionally, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road. The contact stated while attempting to start the vehicle, the vehicle failed to start as intended. The contact stated that the failure had nearly caused the vehicle to be run over by a tractor trailer. The contact's wife and three minor children were also occupying the vehicle during the failure. The contact stated that he and his family could have been killed due to the failure. The vehicle was towed to the dealer, where it was diagnosed with fuel pump power control module failure. The contact was informed that the fuel pump power control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact related the failure to an unknown recall; however, the VIN was not included in the recall. The failure mileage was approximately 35,500.
Nov 07, 2025
ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM
3 complaints
Car was parked overnight in my garage and in the morning it would turn over, but not start. Had to have it towed to my GMC dealer, but had great difficulty moving the car out of the garage because the transmission remains in PARK if the engine is not running. Had this happened on a highway while driving and without a place to safely get off the road ( which HAS happened to others who have made this same complaint to NHTSA), this could have been an extremely hazardous situation for the occupants of the vehicle. The engine will suddenly shut down, power steering is lost, and power braking will also be lost. This problem was diagnosed as a failed fuel pump module. The failed part was replaced by the dealer (GM part#13554820). The service manager acknowledged that this is a known and common issue and that GM is aware of it but has not issued a voluntary recall. The manager also advised that this part has not been updated and that it may fail again without warning. Please....this is a serious safety issue that needs to be addressed before someone is injured or killed while abandoning a car stalled in traffic that cannot be moved.
Aug 07, 2025
Vehicle stalled on major interstate while giving no warning Vehicle would not start after failure Had to be towed to dealership Found to be a faulty fuel pump module Service advisor even said this is a common problem Vehicle mileage was at 33,478 This could have been a deadly accident
Nov 12, 2024
WAS DRIVING AND VEHICLE ENGINE DEAD STOPPED WITH OUT WARNING. COULD NOT GET STARTED AND HAD TO CALL A WRECKER TO TOW TO GMC DEALERSHIP. WERE TOLD IT WASN'T THE FIRST TIME THAT THEY HAD SEEN THIS. THEY HAD A PART IN STOCK TO REPAIR IT. IT WAS DIAGNOSED AS THE “DRIVERS FUEL PUMP MODULE” .WAS SURPRISED THAT THERE WAS NOT A RECALL AS THIS COULD HAVE BEEN A DEADLY INCIDENT DURING RUSH HOUR ON THE ROADS IN MY AREA. WHILE RESEARCHING FOUND A RECALL ON FULL SIZE GMC 2021 SUVS FROM LAST YEAR (NHTSA CAMPAIGN NUMBER 21V739000) ! WHY IS THIS NOT BEING DEALT WITH ON THE 2021 ACADIAS? MY DAUGHTER HAS ONE SHE BOUGHT THE SAME DAY AND NOW I AM IN FEAR IT WILL DO THE SAME THING !!! NO INSURANCE ISSUES OR POLICE ISSUES. AFTER ENGINE DIED SEVERAL SYMBOLS INCLUDING ENGINE ICON CAME ON WHEN TRYING TO RESTART. ALSO RECEIVED AN EMAIL “DIAGNOSTIC ALERT” FROM ON STAR IMMEDIATELY : AN ISSUE WITH THE ENGINE AND TRANSMISSION SYSTEM IN YOUR 2021 GMC ACADIA HAS BEEN DETECTED. PLEASE SERVICE YOUR VEHICLE WITHIN 7 DAYS….
Nov 15, 2022
BACK OVER PREVENTION
3 complaints
The contact owns a 2021 GMC Acadia. The contact stated while attempting to park the vehicle, the contact became aware that the front and rear-view cameras were inoperable. The camera failure message was displayed. The contact stated that the cameras failed to function properly, and an image was not displayed. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 40,000.
Feb 27, 2025
The rear view camera was supposed to have been fixed during the safety recall in 2022, but two years later and over seven visits to dealership service repair shop, it still has not been fixed. GMC says they don't know how to fix it because they have tried everything and that because my warranty has been "out" one month - there is nothing they can do for me. My back up camera has not worked since the recall repair. What can I do? The car has been in the shop, who says they are contacting GMC Service Expert - but they are not communicating with me anymore. I have no car and no fix.
May 02, 2024
The contact owns a 2021 GMC Acadia. The contact stated that while reversing, the back-over prevention camera failed to display an image. The vehicle was taken to the local dealer who diagnosed that the back-over prevention camera was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in NHTSA Campaign Number: 22V709000 (Back Over Prevention). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 25,000.
Jan 23, 2024
SERVICE BRAKES,FORWARD COLLISION AVOIDANCE
2 complaints
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.
Mar 30, 2026
While driving through intersection auto braking system activated for no apparent reason . Could have caused a crash due to sudden unexpected braking. No warning lights or alarm noted during or after event. Dealership was unable to find any problems with the automatic braking system.
May 31, 2022
ENGINE AND ENGINE COOLING
2 complaints
The contact owns a 2021 GMC Acadia. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. In addition, the coolant fan was running after the engine was turned off. The vehicle was taken to Auto Zone to be diagnosed due to the check engine warning light being illuminated. The contact was informed that DTC: P1098; was retrieved, which indicated a fault with the coolant control valve. The vehicle was taken to the dealer, where it was confirmed that the coolant control valve had failed. The vehicle remained at the dealer unrepaired. The contact related the failure to the Manufacturer Recall Number: N252508341. However, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised that the VIN was not under recall. The failure mileage was approximately 69,000.
Mar 20, 2026
The contact owns a 2021 GMC Acadia. The contact stated that while driving, he heard a loud rattling noise coming from the exhaust. The contact then stated that the RPM’s increased and the rattling noise became louder. No warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the exhaust resonator failed the whole exhaust assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 28,000.
Oct 03, 2022
STEERING,UNKNOWN OR OTHER
2 complaints
"STEERING ASSIST REDUCED. DRIVE WITH CARE" message, fan runs nonstop, even after the vehicle is off. Sounds like a plane taking off. This seems to be EXTREMELY common after doing my research. Please consider turning this into a recall!
Nov 24, 2025
Recently took vehicle for alignment for a pull to the right. After 3 alignments at the dealership I was told the rack and pinion gear sensor shorted out causing the vehicle to pull to the right. Also the exhaust has a rattle in the resonator confirmed by 2 sources. I asked the dealer to fix years ago under bumper to bumper and tsb PIT5863. I was told not enough techs and not enough time so now the warranty is expired and the issue isn't fixed.
Oct 29, 2025
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
2 complaints
I have had nothing but issues with this vehicle from the day I purchased it. I should have been more leery of purchasing a vehicle with so few miles on it as a certified vehicle. First issue lift gate wouldn’t work. Had to have sensors replaced twice. Next was the purge valve sensor that has went bad 3 separate times. Then the crankcase vent sensor. Paid a fee for diagnostics, it was not repaired took it back when the engine light came back on, they replaced it without charging but I was advised it’s not covered under warranty. And most recently my check engine light came on yet again today now reading an issue with the engine cooling system. Unfortunately the dealer is so booked out, my only option is to drop it off and hope they can get it in by a cancellation or no show. Seems there are new issues ever 3-6 months with the car.
Mar 17, 2025
While driving vehicle stalled multiple times in the middle of the road, with service transmission and engine light coming on, causing unsafe conditions, causing accident and leaving passengers stranded. Battery being drained and needing to be replaced multiple times within 2 years. Vehicle stopping and shutting off on the highway causing dangerous driving conditions!! Radio and lights flickering, with radio freezing and shutting off. Electrical system not working properly and overheating!
Dec 11, 2024
SUSPENSION
2 complaints
I have 43,000 miles on my car and I do not by any means drive hard or really ever go over 50 MPH and I am being told that my rear tow links are loose and need to be replaced. I have NEVER had to replace those in any vehicle I have ever owned especially a 2021 vehicle with under 50k miles on it. I have read that there is a recall on the 2022 Acadia's for this exact issue so I can only assume it is the same issue happening on the 2021's as well.
Jun 27, 2024
The contact owns a 2021 GMC Acadia. The contact stated while driving approximately 65-70 MPH, the driver’s side rear spring detached and almost caused a collision. The dealer was made aware of the failure and it was arranged for the vehicle to be towed to the dealer for diagnosis. The contact stated that the vehicle was towed to the dealer prior to the failure after the contact heard an abnormal noise coming from the rear of the vehicle. However, the dealer could not replicate the failure and the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 12,000.
Aug 30, 2021
FORWARD COLLISION AVOIDANCE
2 complaints
While driving down a busy road automatic braking engaged for no reason causing the Acadia to abruptly come to a dead stop in the middle of the road with nothing in front of me. Red collision lights came on at the same time as braking with no prior warnings. Could not get the car to move for a few minutes (when giving gas there were grinding sounds) then the braking system let up. Drove for another few minutes and it did it again. Called GM and WE had to figure out how to get the car to the dealership with a major safety issue. Took the car in and it was throwing B390F, U0184, B395A codes. When we received the vehicle back one of the codes was for a bad back up camera so the new rear back up camera view is so stretched you can’t use it to back up nor does it have the lines anymore. The rear view camera now has a view that is sideways. So I took the car back to the dealership and they had no clue how either could be happening and would look into it again. Did my own research and figured out there are two cameras on the tailgate so the rear view camera was reinstalled wrong. Sent proof of how I came to the conclusion and that I wanted the backup camera replaced/fixed also. Its been over a month and I cannot get my car fixed because I refuse to pay for a rental on something they messed up because they have no loaners. Well on 11/14/2022 my cars automatic braking system activated again only this time it stopped in the middle of the road and was not as dramatic as last time. The warning lights came on as the car was coming to a stop. This time I was able to move shortly after it came to a complete stop. GM dealership wants me to bring the car in somehow and I will be carless for who knows how long. There is also a safety recall for a cable for the backup camera with no parts available. I have an RO number and a complaint number.
Nov 15, 2022
Was on the interstate driving when the emergency brake engaged causing the car skid the tires and almost completely coming to a stop in heavy traffic. Shortly after this the transmission had issues which caused the car to be undrivable and had to be towed. The dealership had the car for over a month and replaced the TCM. There were no other warnings prior to this.
May 28, 2021
ELECTRICAL SYSTEM,BACK OVER PREVENTION
2 complaints
We purchased the vehicle in March 2021 and within a few weeks, the rear camera started working intermittently. At one point, it displayed a black screen with a red warning triangle. The dealership ultimately replaced the camera and we haven't had the problem since.
Sep 29, 2022
VEHICLE PURCHASED NEW MID-MARCH 2021 AND IN LESS THAN 30 DAYS THE REAR BACK-UP CAMERA STOPPED WORKING INTERMITTENTLY. THIS HAS OCCURRED SEVERAL TIMES AND THE VEHICLE IS CURRENTLY AT THE DEALER BEING DIAGNOSED.
May 07, 2021
POWER TRAIN,ELECTRICAL SYSTEM
1 complaint
This is a very known issue that has been reoccurring with GMC Acadia. The torque converter slipping. That cost alone is over $7.000 for the transmission. I am still making monthly payments for my 2021 Acadia. With rising cost above the board GMC could have resolved this issue before releasing this vehicle to the public for purchase. Only had this vehicle for 2 years and already a new transmission is needed. Other individuals i personally know have the same issue. From my research GMC is aware and fails to do a recall on this issue.
May 12, 2026
STEERING
1 complaint
My vehicle’s steering became dangerously stiff while driving on the highway, nearly causing my wife to be involved in a serious accident. While she was traveling on I-95 in Miami, Florida, the steering suddenly got so hard that she could barely control the vehicle and was unable to turn the wheel properly. This created an extremely dangerous situation and put her life, as well as the lives of others on the road, at risk. She was thankfully able to get off the highway, and I had to come take over the vehicle to make sure she got home safely. This was terrifying and completely unacceptable. A failure like this should never happen while a vehicle is in motion. When I took the vehicle to the dealership, I was told I would have to pay over $3,500 for the repair. That is outrageous for such a serious safety issue. I also found information online showing recalls for similar steering problems in GMC Yukons, yet GMC Arcadias do not appear to be included. That is deeply concerning, especially since this same dangerous defect is clearly affecting my vehicle. This issue could have caused a major crash, severe injuries, or even death. GMC needs to take responsibility for this problem instead of forcing customers to pay thousands of dollars for a dangerous defect that should be addressed as a safety recall.
Mar 09, 2026
ELECTRICAL SYSTEM,ENGINE
1 complaint
Car has had multiple issues with check engine light coming on for the last 2 years and stays on especially during the winter months. The purge pump has failed multiple times. The cooling fan has run after engine shutting off for multiple years now. The thermostat has been failing for the last 6 months. Now yesterday low power protection suddenly turned on driving on the expressway limiting power in the middle of traffic. Was able to get off at exit without accident and get car home. I guess we have to pay out of pocket to get fixed. This is a known issue that GM fails to include every VIN with the 2021 year or certain models and VINS.
Mar 04, 2026
ENGINE,ENGINE AND ENGINE COOLING
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and DTC: P04FB; was displayed. The vehicle was taken to the dealer where it was diagnosed with moisture of the crank case. The vehicle was repaired. The contact stated that the failure was a quick fix and was covered under the warranty. The contact stated that the failure had occurred several times and was covered under warranty. The contact was informed that there was no fix for the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 37,000.
Feb 09, 2026
ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL
1 complaint
The electronic dashboard goes black while driving. I was driving to work on the highway at highway speeds and the entire electronic dashboard went black including the hud display and the radio screen. The radio screen turned back on and auto reconnected to my phone and android auto. I was able to safely get to an exit and park, turn off the car and restart and the dash did come back on to then go black about 5 minutes later this time the hud stayed on and I was able to get to work where the car sat off for 8 hrs , when leaving work the dash stayed on. The radio screen would turn off randomly and unable to connect to a programmed cell phone via Bluetooth or data cable. I brought the vehicle in for a service and this issue plus the concern of the transmission shuddering. The dealership found the problem and both the dashboard and radio needed service updates and both were charged to fix. A service update should not be charged for the dash as you have no speedometer when it goes out. There was no warning or alert that the dash or radio needed an update.
Jan 09, 2026
POWER TRAIN,LANE DEPARTURE
1 complaint
Cars is not keeping track of temperature showing engine is cold after 30 minutes of driving, fan runs for extended periods of time after shutting off, check engine light comes on, steering assist alert comes in screen. All of this happens in a cycle. To stop it the battery has to be unplugged and reconnected resetting the car and everything goes back to being fine for a short period of time.
Jan 08, 2026
STEERING,VEHICLE SPEED CONTROL,ENGINE
1 complaint
For the 3rd time of ownership the cooling fan stays on after vehicle is turned off and the display “steering assist is reduced, drive with caution”.
Nov 24, 2025
STEERING,POWER TRAIN,ENGINE
1 complaint
The thermostat failed which cause the steering system to fail and car to not read temperature
Nov 23, 2025
FUEL SYSTEM, GASOLINE,ENGINE
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated that while his wife was driving at an undisclosed speed, the vehicle inadvertently lost motive power. The driver was able to coast to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the fuel pump control module. The vehicle was repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 36,970.
Nov 19, 2025
STEERING,ELECTRICAL SYSTEM
1 complaint
Often times, on the heads-up display I would get "Steering Assist is Reduced Drive with Care" and my temp gauge will stop working and when I stop, my fan continues to run until I disconnect the battery for 20 secs.
Nov 13, 2025
STEERING,ELECTRICAL SYSTEM,ENGINE
1 complaint
I was driving home and about 10 minutes into my drive I got a notification about my steering assistance being disabled. When I arrived home about 10 minutes or so later and went to shut my car off I noticed that a very loud fan sound from the hood of my vehicle began roaring. I restarted my car and it went away. I looked at my temperature gauge and it was all the way on C. I tried shutting my car off again and the loud electrical fan sound picked right back up again. I stayed in my vehicle while it was turned off waiting to see if it would stop while trying to call for answers. I couldn’t risk having a dead battery for work tomorrow morning. After what was about 6-7 minutes the electrical fan finally shut off. Turns out my aunt JUST had this exact same issue with her 2021 GMC Acadia as well. According to Reddit MANY people are having this issue yet there is still no recall for this problem. My car is only at 85K miles, has always been dealership maintained and has never had any issues like this until now. If this is a wide spread make and model issue a recall should have been issued.
Nov 02, 2025
STEERING,POWER TRAIN,ELECTRICAL SYSTEM
1 complaint
While driving, error popped up stating steering assist is reduced; drive with caution. Heat was no longer working. Engine temp was reading cold even though vehicle had been running for half hour and temp outside was 65 F. After vehicle was stopped, engine fan ran very loudly for at least 15 minutes. Took vehicle in to have diagnostics ran, and received error P0128 pointing to faulty engine coolant thermostat and sensor. Also received U0401 indicating insufficient data coming from ECM/PCM. I was told that together with U0401 and P0128 together indicate a communication problem between control modules. Check engine light was never on.
Oct 22, 2025
STEERING,UNKNOWN OR OTHER,ENGINE
1 complaint
I have a 2021 GMC Acadia that keeps saying steering assist not available. But when it does this, the temperature gage stops working and so does the AC. After you turn the car off the fan still runs for at least 10 minutes.
Sep 21, 2025
STEERING,ENGINE
1 complaint
This is a well known issue. On the dash it keeps reading steering system is being reduced drive with care. I have been dealing with this issue almost years. Been to the dealership too many times for this issue
Sep 05, 2025
ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE
1 complaint
Instrument cluster malfunction. Entire instrument cluster blacking out every 60 seconds, then rebooting nonstop while driving. While this was occurring, none of the advanced driver assistance systems functioned, nor did the speedometer or other gauges. This occurred while on a trip, and meant having to travel a long distance without having emergency braking, collision warnings or the ability to monitor speed. The car was taken to local dealer and they replaced the entire instrument cluster.
Aug 07, 2025
VEHICLE SPEED CONTROL,UNKNOWN OR OTHER,SERVICE BRAKES
1 complaint
The Vacuum pump on my 2021 GMC Acadia failed causing my breaks malfunction. This Problem was confirmed by a certified mechanic that repaired it. this is in conjunction with the NHTSA recall issued under N192268490.
Jun 30, 2025
EQUIPMENT
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated that the navigation screen was inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The dealer suggested replacing the unit. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 107,000.
Jun 13, 2025
LATCHES/LOCKS/LINKAGES
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated that the door locks failed to lock and unlock while using the key fob or the buttons on the outside or inside the vehicle. The locks failed to operate as needed until after the vehicle was driven. The contact had to manually lock the door; however, after locking the door, the contact was unable to unlockthe vehicle. The contact had to climb through the trunk of the vehicle to enter the vehicle. The contact stated that the failure only occurred while it was raining. The vehicle was taken to the dealer, who was unable to duplicate the failure because it was not raining at the time. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure and confirmed that the vehicle was not included in GMC Special Coverage: N22378380. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 37,000.
Apr 08, 2025
POWER TRAIN,ELECTRICAL SYSTEM,LANE DEPARTURE
1 complaint
Vehicle gives, “Driver assist reduced Drive with care” warning randomly. Lane change will no longer work and engine light will come on. Problem is sporadic and does not stay active. Engine light will shut off after a day. Once vehicle is shut off cooling fan runs extremely loud and for a long period of time draining battery.
Mar 27, 2025
ELECTRICAL SYSTEM,AIR BAGS,UNKNOWN OR OTHER
1 complaint
I was traveling in my 2021 gmc Acadia in which I have had numerous issues with is the almost 4 years I have owned it. The back up camera 2 weeks after purchase it went out in June of 2021. After that The vehicle In October of 2021 I get in the vehicle on rainy day. Infotainment systems reads error with the SD card that Issue progressed I called dealer finally I get service appointment after strike and my vehicle sits at Roger’s Pontiac GMC 2660 Michigan Ave Chicago IL 60616 for 10 hours now I placed thread around the crowl and by knob. Car was not touched I was told it was a internal issue and that the GM Engineers would need to replace the infotainment system They looked at it again In November of 2022 No closer to finding a problem I called Gmc Because by now My Temperature coolant sensor was working then not working car would say reduced parking assist and then if hot Air conditioning wouldn’t work I Called GMC offices filed numerous complaints. They called the service manager no one would take calls nothing would get done. So [XXX]I’m Driving down [XXX] heading east a big Truck flys off of [XXX] slams into side of my SUV Destroys every panel on passengers side of vehicle The Acadia mine with all the curtain air bags in the a pillar in ceiling on the front and back seats on top Side and bottom side not one deploys not even on the A pillar where rear passengers door is ripped off. I was knocked out if anyone was in them 2 seats like my 2 kids that are always with me [XXX] they could have been killed no safety bags deployed? I basically begged for auto to be repaired of electrical issues when only 2000 miles on it with 900 miles on it GMC I called every week for almost 2 years no help now this! I was injured have not much memory of accident. This auto needs be taken off road I deserve like I asked for when new same car just without issues I could have been killed but no one cared. Now look no air bag INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Mar 11, 2025
ENGINE,FUEL/PROPULSION SYSTEM
1 complaint
May 2023 we took the car to the GM dealership for a electronic recall. We reported a rattling noise at that point in time. Whatever repair was done that the car ran w/o any noise for nearly a year. April 2024 the catalytic converter failed at just 61K miles on this vehicle. The mechanic at the same dealership noted a broken mounting bracket and replaced the catalytic converter. October 24 2024 at 76K miles the car started making the same noise. The mechanic at the same dealership noted a loose mounting bracket due to an excessively vibrating catalytic converter, a crack on the cat converter, a leak and sequentially damaged front pipe. They noted they made all of those repairs. They noted they test drove the vehicle and verified the car was repaired. October 26, 2024 after those final repairs the car made a loud revving noise and emitted a smell of sulfur. The next day the car died on the road while driving. Every system of he vehicle shut down and I narrowly avoided getting hit from behind. On 11/2/24 We had the car towed to the dealership again. The mechanic noted the recent replacement on the cat converter & oil had leaked intermixing. That caused the motor to seize and the car to stop working while I was on the road driving. I can't imagine what could've happened to me had it stop on the highway at 65mph.
Mar 01, 2025
STEERING,VEHICLE SPEED CONTROL
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated while driving 50 MPH, the vehicle suddenly decelerated to 35 MPH. The vehicle stalled, and the "Steering Assistance Reduced" message was displayed. The vehicle was restarted. The vehicle was taken to the local dealer the following day, where it was diagnosed that the accelerator pedal and terminal connector were bent. The dealer retrieved DTC codes: P2138, and P2122. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 27,792.
Sep 24, 2024
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM
1 complaint
The vehicle, without any warning, suddenly stopped. I was unable to restart and unable to put the vehicle in Neutral for pushing to a safer location. Had to be towed to the dealership.
Jul 24, 2024
POWER TRAIN,FORWARD COLLISION AVOIDANCE
1 complaint
My vehicle stops working while in traffic when the auto stop is engaged. The abs, parking brake, and dash flashes prior to the engine stopping. I have been to the dealership multiple times and they are never able to recreate the issue. The check engine light codes produced are P0014 and c0800-03.
Mar 01, 2024
AIR BAGS,SEAT BELTS
1 complaint
Service safety restraint system notice comes on constantly and disappears at random times.
Feb 12, 2024
STEERING,ENGINE,FUEL/PROPULSION SYSTEM
1 complaint
The car stopped working all of a sudden, I was driving the car with no issues that morning and parked & shut off car to go to my appt. I turned the car back on and worked fine as I was putting in my address on the GPS my car just stopped and shut off by itself. I pushed the start button and it sounded like it wanted to start but it wouldn't and the whole engine shooked. Called GM and car still under warranty had it towed to the nearest GM. They diagnosed it and said it was the fuel injector module that went bad. It's 2021 with only 23800 miles. After a week, just got it back for a day and now the cooling fan has a loud noise, check engine light on, coolant stays on C even after driving it more than 10 mins, ac blows hot air, I get an alert with steering assist is reduced and to drive with care.....seems like something is wrong with the thermostat.
Oct 19, 2023
SEAT BELTS
1 complaint
My grandson used the safety restraint in the middle second row seat. He pulled the belt out to put it on and it would not retract. I have taken it to the dealership to have it fixed but there is a fee of $515 to fix it. I do not feel I should have to pay the since it seems to be an ongoing problem with the Acadia model. I purchased a 2018 model before this one and the same thing happened with the middle safety restraint in the second row seat. I have contacted GM and they informed me there is nothing they can do to waive the fee of fixing this defect.
Oct 06, 2023
LANE DEPARTURE
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated that the software update was performed under NHTSA Campaign Number: 22V709000 (Back Over Prevention). After the software was updated, the Lane Departure Assist system failed and was no longer alerting the driver when the vehicle was drifting into the other lane. The vehicle was taken back to the dealer who completed the software update however, the cause of the failure was undetermined. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 17,700.
Sep 27, 2023
STRUCTURE
1 complaint
The contact leased a 2021 GMC Acadia. The contact stated water had leaked into the trunk compartment on a rainy day. Additionally, the contact stated that he pressed the power release button to close the trunk; however, while the trunk lid was in the process of closing, the driver's side trunk lid spring fractured. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed nor repaired. The failure mileage was approximately 15,000.
Sep 14, 2023
TIRES
1 complaint
Driving at 70mph on Interstate 69 near Charlotte Michigan at around 10 pm on Wednesday 8/23/2023. Passenger side front tire suddenly deflated. Limped the SUV into a store parking lot at interchange. Continental 235/65R18 106H tire was changed by road side service and spare installed. This morning , while examining tire and rim , found two long radial cracks approximately 50 to 75 mm in length on the outboard surface of the tire. The cracks are about 90 degrees apart. The vehicle has just under 34000 miles on the OEM installed tires. The reason I am contacting NHTSA is that the cracks do not look like road hazard/debris, rather a split in the sidewall. I have not taken the tire back to the dealer or a tire store. I did photo document the failure and cracks.
Aug 24, 2023
STRUCTURE,UNKNOWN OR OTHER
1 complaint
I opened my power lift gate to load groceries in the trunk. It opened without issue. As I loaded the groceries the lift gate came crashing down on my head. This happened in the festival foods parking lot around 5:05 pm today (7/16/23). Once I moved out from under it I saw the left arm was popped off. I popped it back in , there is a metal piece that was messed up. It came/ happened out of nowhere. I’ve never had an issue with it.
Jul 16, 2023
SERVICE BRAKES,VEHICLE SPEED CONTROL
1 complaint
As I was stopped in line behind a car at the ATM, my foot slipped from the brake, I quickly placed it back only to find that I ended up going forward. I quickly moved my foot more to the left for the brake only to end up going forward even faster hitting the car in front of me. I then put my left foot firmly on the brake. Now with both feet on the brake the car is climbing up the car in front of me and not braking. Finally, I put it in park and cut the engine. The whole front end of my car is crushed. Now 5 days earlier my husband had a similar incident when he was parking the car and thankfully only hitting the curb. Looking at the brake pedal you will find that there is a rubber edge hanging down on the right side. IF YOUR FOOT SLIPS BELOW IT while crossing from the accelerator going right to left, YOU WILL NOT hit the brake but will continue to press the accelerator. In fact, if you raise your foot upward, you will only raise the brake. The only way to get to the brake is to get out from under it by going toward the accelerator and then back to the left. This action does not work in an emergency! I believe this rubber edge is too large is a safety hazard. We are still in the process of assessment by insurance, body shop and GMC.
Aug 28, 2022
PARKING BRAKE
1 complaint
My emergency parking brake keeps engaging on its own, as I come to a stop, jeeking me forward. I never even put it in park, but it just engages the parking brake in a forceful manner. At a couple different times, while going at about 40 mph, the car starting shaking terribly, slowing the vehicle. The check engine light came on as well as both parking brake lights on the dash (the indicator light saying the parking brake was on and the indicator light saying there was a problem with the brakes). It felt light the vehicle had engaged the parking brake with I was driving and was dragging the parking brake. I have been having problems with the brakes with the vehicle and have taken it to the dealership a few times for this issue. They only kept it overnight and told me there was nothing they could do because it didn't happen while they had it. I have a fractured back and am disabled, and this issues actually hurts me when it does it.
Jun 14, 2022
ELECTRICAL SYSTEM,ENGINE,BACK OVER PREVENTION
1 complaint
I got into an accident because my back up crap camera did not warn me that a car had turned behind me. Also when and backing up and a car is coming it doesn’t indicate the car is coming until it’s behind me. I’ve taken it to the dealer and they say there’s nothing wrong with it. Also there is no break when you come too close to something in front of you.
May 09, 2022
VEHICLE SPEED CONTROL,UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM
1 complaint
Brand new vehicle purchased from dealer, at 8900 miles transmission slipped. Dealer has for 2 hours and couldn’t find problem, but replaced transmission fluid it was dark. At 9000 it happened again, they have vehicle and said the new transmission fluid is dark and muddy. Only 100 miles, so they determined they need to take apart transmission and see what happened. It’s a 52k car, it should not be repairs, it should be replaced under warranty. Video of 8900 from dealership https://video.37483.net/timeline/2CJTHEW6
Feb 02, 2022
VISIBILITY/WIPER
1 complaint
I want to voice my concerns with the windshield wipers, and storage placement. In winter weather conditions the storage compartment at the base of the windshield fills up with snow, even when driving. The wiper blades eventually end up resting on this snow. When wipers are turned on there is a quite often a build up of ice on the wiper blades. This causes the wiper blades to raise above windshield and not clean the windshield (partially or completely) Generally you need to stop and break/snow or ice from the wiper as you can not see. Same occurs when e get a freezing rain ice builds up at base of windshield then eventually ices up the wiper blades and not cleaning the windshield. The vehicle is not designed to handle winter and freezing rain conditions, after building vehicles for many years we should have a better wiper system. --Blades should have electric heat wires in them, --maybe need completely electric windshield to handle snow/ice cond. -- The placement of the defroster vents are very poorly placed, they should be all across the base of the windshield. A couple of days ago we had freezing rain, blades were freezing up, heater defroster was at max heat, and fan was at max, I had to constantly pull over and scrape ice off. This is very dangerous situation be it ice or snow. Design engineers really don't seem to take the winter conditions into consideration in the design of vehicles. I have driven over 5 million kms during my career and used to dealing with many types of conditions. No accidents . Just want to bring these issue to your attention. I am extremely disappointed in this unit because of this. Thanks [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Jan 25, 2022
ELECTRICAL SYSTEM,SERVICE BRAKES
1 complaint
Electronic parking brake is setting itself without you doing it even when parked on a completely flat surface. Voice activated assist is going off while driving down the road without you hitting the steering wheel button. 1st dealer I took the car to refused to even address issue because the car didn’t throw a code even though the parking break issue happened while in their parking lot. 2nd dealer at this point has had the car for a total of 16 days. They tried to tell me the parking break was normal, manager at actual dealership told me it definitely was not normal, and they don’t know what to do about voice activation going off. It has now been at dealerships 3 times for this issue within Oct and Nov 2021. Only 4,500 miles on car. If it is having these electric issues already what is in store for this car in the future? My husband has a video on YouTube of voice activated assist issue so far 2 other people are saying their cars are having the same issue.
Nov 27, 2021
ELECTRICAL SYSTEM,EXTERIOR LIGHTING
1 complaint
My 2021 Acadia just stooped working as COMPLETLY SHUT OFF. I had no power to contact OnStar or more importantly to put my 4 ways(Hazard lights) on to signal or warn other motorists that there is a problem ahead. I could not push the vehicle as it is locked in gear because of the termination of power. I have had this exact problem happen 3 times leaving me and my family stranded on a busy road with nothing working. On each occasion I have removed my family from the vehicle in fear of being rear-ended! This would not only cause an accident with harm or fatality to my family, but has put that same risk to other motorists on the road. When I have had the vehicle in the dealership (Champion Buick/GMC of Brighton) in which it needs to be towed, they have not been able to find or confirm this issue. The dealership has had the vehicle for multiple weeks with help and assistance of GM with also no resolution. This is a very intermittent issue and when it happens it is an extremely dangerous situation. The vehicle gives no warning except for a total shut down.
Nov 19, 2021
POWER TRAIN,ENGINE
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated while stopped at a stop light and depressing the brake pedal, the engine revved up with the RPM’s increasing up to 15,000. No warning lights were illuminated. The contact stated that the vehicle jerked and vibrated as the transmission did a hard shift. The vehicle was taken to the dealer who took the vehicle on a 24-minute test drive and no failure was found. The vehicle was taken to the dealer several times and no failure was able to be determined. The failure occurred several times. The manufacturer was notified of the failure however, no assistance was offered. The approximate failure mileage was 249.
Nov 04, 2021
VISIBILITY/WIPER,BACK OVER PREVENTION
1 complaint
Since purchase of this vehicle in Dec 2020, the rear camera vision has been intermittent. I originally thought it to be driver problem however I am now told that there is a module that needs to be replaced and it is not available and possibly not being manufactured at the present time. As a result the entire Camera parking assist system is completely out of service with no information on when the module may be available to repair the issue. I believe this may be a Safety issue as backing up into traffic be it parking lots or roadways, this equipment is an essential addition to safety to other vehicles and pedestrians.
Aug 16, 2021
VEHICLE SPEED CONTROL
1 complaint
The contact owns a 2021 GMC Acadia. The contact stated that while his wife was reversing the vehicle, the accelerator pedal was stuck to the floorboard and the vehicle crashed into the garage wall. No medical attention was received. No police report was filed. The dealer was made aware of the failure and informed the contact to tow the vehicle to their location to diagnose the failure. The vehicle was awaiting a tow truck and had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 2,500.
Aug 05, 2021
STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER
1 complaint
CAR STEERS TO LEFT,VOLUME DOES NOT WORK AFTER A CONNECTED CALL WHILE DRIVING,SCREEN BLACKS OUT AND NOISE COMING OUT OF LEFT DRIVER DOOR PANEL WHILE CAR IS OFF,ALSO MESSAGE THAT SD CARD WAS REMOVED NO APPS WORKING
Dec 12, 2020
GMC Acadia VIN Decoder — Free VIN Check Video Guide
Watch our quick GMC Acadia VIN decoder walkthrough. Learn how to decode any GMC Acadia VIN number to get full vehicle history, recall alerts, specifications, fuel economy (MPG), safety ratings, and known problems — completely free on ForCar.org.
Where to Find VIN for Problems Check
To check for problems and complaints on your 2021 GMC Acadia, you'll need the VIN number. Find your VIN in one of these 4 common locations.
Understanding VIN Structure for Problem Reports
Each character in your 2021 GMC Acadia 17-digit VIN helps identify specific complaints and problems affecting your vehicle model.
How to Check 2021 GMC Acadia Problems in 3 Steps
1
Locate Your VIN
Find the 17-character VIN on your 2021 GMC Acadia dashboard (visible through windshield), door jamb, engine bay, or vehicle documents.
2
Review by Component
Browse owner-reported complaints organized by vehicle component (engine, transmission, brakes, electrical) to identify common issues and problem patterns for this model year.
3
Check Safety Issues
Review crash and fire incidents for each component to assess safety concerns. Contact your GMC dealer or report problems to NHTSA at SaferCar.gov.
Frequently Asked Questions
How many problems does the 2021 GMC Acadia have?
The 2021 GMC Acadia currently has 139 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.
What are the most common problems with 2021 GMC Acadia?
The most common problems reported for the 2021 GMC Acadia are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.
Where does this 2021 GMC Acadia problem data come from?
All problem and complaint data for the 2021 GMC Acadia comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.
How do I report problems with my 2021 GMC Acadia?
You can report safety problems with your 2021 GMC Acadia directly to NHTSA at SaferCar.gov or call 1-888-327-4236. Your complaint helps identify patterns and may lead to recalls or investigations.
Where can I find my VIN to check problems?
Your 2021 GMC Acadia VIN is located in 4 places: (1) Dashboard near windshield on driver's side, (2) Driver's door jamb sticker, (3) Engine bay, (4) Vehicle registration and insurance documents.
Is the 2021 GMC Acadia reliable?
Reliability can be assessed by reviewing the number and severity of owner complaints for the 2021 GMC Acadia. Check complaints by component, crash reports, and fire incidents above to evaluate potential issues and problem patterns.
Other Years - GMC Acadia Problems
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