2020 GMC Acadia

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/15/2022· LANE DEPARTURE

  SIDE BLIND ZONE SYSTEM TEMPORARIALLY UNAVAILABLE message displayed in DIC, and system does not function. I can not rely on the system as it very often does this. This issue started on 12/08/2022. I feel that I am at risk of a crash as I rely on this system for blind spot detection. There are MANY forums that state that MANY other 2020 GMC Acadia's have this issue. I feel like this is a GM issue, and the consumer should not be left with the cost of any repair, if necessary. This is a safety risk and could result in death from a crash due to a failure of a safety system.

• 12/15/2020· ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE

  BRAND NEW VEHICLE. PURCHASED ON 10/30/2020. FRONT COLLISION KEEPS FLASHING A RED LIGHT IN THE TOP OF DASH THAT SHOWS UP IN WINDSHIELD. THIS HAPPENS WITH NO OTHER VEHICLES ON THE ROAD AT RANDOM TIMES. WHEN THE VEHICLE NEEDS TO STOP OR WARN YOU IT WILL NOT. IT WILL JUST LET YOU HIT A PEDESTRIAN OR ANOTHER CAR. WE NOTICED THAT THE SAME THING IS HAPPENING WITH THE REAR SAFETY CROSS TRAFFIC.

• 12/12/2022· POWER TRAIN

  I started receiving an error message that driver assist is reduced drive with car at 50k miles (i have an onstar diagnostic report and phone call made that day). It shut my car down and activated the parking break. I called Onstar at that moment it happened and they found nothing wrong with the car. It continued to happened several times after and each time I took it to the dealer they were unable to diagnose the problem. One time I was told there was a bulletin on it from GM, but not for the year of my car so they were not able to make the repair. When it finally started giving me the error all the time, they finally found it was the thermostat - $1600 and GM would not cover the part under warranty because I now had over the warranty miles even though it happened and was reported prior to that point. I have several people tell me with the same vehicle they too are having the problem - and it is costing each consumer $1600. GM knows it is a problem because it is all over the internet. There should be a recall and our costs reimbursed if we have had to make the repairs on our own.

• 12/09/2025· ENGINE

  Engine coolant thermostat failed under 55,000 miles and had to have it repaired on my 2020 Acadia. The 2021 Acadia has a recall on the thermostat.

• 12/06/2024· POWER TRAIN

  The contact owns a 2020 GMC Acadia. The contact stated while stopped at a traffic light and depressing the accelerator pedal after the light had changed, the vehicle hesitated and then lurched forward. The contact stated that an unknown warning light was illuminated. The contact stated that while driving at an undisclosed speed, the vehicle was vibrating abnormally. The vehicle was taken to an independent mechanic to be diagnosed and it was determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The contact researched online but found no recall related to the failure. The failure mileage was approximately 80,000.

• 12/02/2020· POWER TRAIN

  2020 GMC ACADIA. CONSUMER WRITES IN REGARDS TO LOSS OF POWER AT LOW SPEEDS AND JERKING WITH BRAKE LIGHT ILLUMINATED. *LD *JS

• 11/29/2025· FORWARD COLLISION AVOIDANCE

  My front camera that detects the front collision and helps with adaptive cruise control just went dark. I thought maybe it would reset after turning engine off and restarting it, but it didn’t help. Not sure what happened.

• 11/26/2019· SERVICE BRAKES

  RECENTLY PURCHASED A 2020 ACADIA DENALI. WHEN PARKING AT ANY INCLINE THE PARKING BRAKE AUTOMATICALLY TURNS ON. DEALER IS NOT SURE WHY, BUT NO WHERE IN THE MANUAL DOES IT STATE THIS IS NORMAL. TO DISENGAGE BRAKE VEHICLE HAS TO BE PUT IN GEAR WITH FOOT ON BRAKE TO TURN OFF. THE PARKING BRAKE SHOULD TURN OFF WHEN VEHICLE IS IN PARK WITH FOOT ON BRAKE BUT IT DOES NOT. DEALER IS UNSURE OF ISSUE AND HAS AN OPEN CASE WITH GMC TO INVESTIGATE.

• 11/26/2019· ELECTRICAL SYSTEM

  TWO DAYS AFTER PURCHASING A NEW 2020 GMC ACADIA I GET AN ERROR ON THE DISPLAY "SD CARD REMOVED" ALONG WITH VARIOUS OTHER ERROR MESSAGES. DEALER TALKS TO GMC TECH LINE AND THEY ADVISE TO REPLACE RADIO. RADIO WAS REPLACED AND ERRORS BEGAN SAME DAY I PICKED IT UP. DEALER IS REPLACING RADIO AGAIN, BUT UNSURE IF THIS WILL FIX THE ISSUE. THE VEHICLE DOES NOT WORK AS INTENDED AS WHEN YOU PRESS THE NAV BUTTON VARIOUS ERROR MESSAGES POP UP AND NAVIGATION DOES NOT WORK.

• 11/25/2024· ELECTRICAL SYSTEM,ENGINE

  The electrical, engine, and A/C systems failed. First our A/C stopped blowing cold. A warning light came up and said that driver assist was not working properly, and temperature gauge went all the way down to cold and did not move after that. It appears 3 things were malfunctioning. I was afraid to drive it for fear of burning up the engine due to an engine cooling malfunction and the car overheating. The A/C stopped blowing cold air but was still blowing warm air. The steering system alert was on the dash but wasn't an issue. I called OnStar to diagnose the problem and they initially said they didn't see a problem but based on what I described it would be best to have it towed. I later got an email that an issue was detected, code P0128. I called my dealership and they also said to have it towed so they could check it. We were not in a position to have the car towed and for it to sit in the service department for 5 days (that was what their queue backup was like then). I took the car to a nearby shop to have it checked. Because I was afraid to drive it we I got it there by disconnecting the battery. A/C was blowing cold like Arctic air and the temperature gauge went back to normal. We got it to the shop (a few miles away) and they could not duplicate the issue due to the battery disconnection "fix". They said the car would be temporarily functioning per usual but the problem will come back again soon and to bring it back when it happens. It happened 2 weeks later (2 hours from home/stuck in traffic). We found an auto parts store and bought a wrench to disconnect the battery again to get home and all was good once we did that "fix" again. We have a service appointment to have it repaired. Two quotes I got were for $1600 and $2200. Temperature sensors/thermostats were suspected to be the cause of the issue. The auto shop stated they frequently see this issue (P0128) with GMC vehicles in recent years, even when they are only a few years old. Ours is 4 years.

• 11/24/2025· STEERING,POWER TRAIN,ELECTRICAL SYSTEM

  1. Shift to Park failure, P0700/P187e internal sensor, causing me to have to get a rebuilt transmission. 10/2025 2. Transmission shudder/hard-shifting ongoing 2022-2025 3. Coolant/thermostat issues. Steering Assist Reduced" message, fans stay on HIGH, no AC, engine temp on ZERO ongoing since 2024 3. Start/Stop button failure multiple times (replaced 3 times) 4. Rack and pinion/steering gear (would not return/ got stuck while turning) got new rack and pinion 2023 5. Water pump leaking, replaced 4/2024 6. Since 2023, have had ongoing “Timing OVER ADVANCED”, warning issues since 2023. This is TOO MUCH for a New car!!! I’ve owned MANY cars and NEVER had this many issues!!! There appears to be multiple design flaws with this model and similar models!

• 11/23/2025· STEERING,ENGINE

  Steering Assist reduced drive with care message. This is an extremely common issue and should be a recall. ALOT of people including my dealer service advisor has this issue with their vehicle this message comes up fans kick on high a/c stops working and temp gauge stops working. It can be reset by unplugging battery or clearing the code.

• 11/21/2025· STEERING,ENGINE

  The "Steering Assist is Reduced" warning came on the same time the engine thermostat display stopped working. Then the check engine light came on the same time the AC stopped working. At first I thought maybe it was just the battery, so I had that changed out. But the "Steering Assist" warning continued and the engine thermostat display was still stuck on "Cold" no matter what (note: the oil temp display still worked fine). Looking in to the problem, apparently a defective Engine Thermostat is a pretty common issue with this vehicle. Why isn't there already a recall on this? The risk of engine overheating is HUGE and dangerous. I called GMC and they want to charge and arm and a leg to fix it (the car has 47000 miles so is just out of warranty). I don't want to wait until there is an accident to have something done about this.

• 11/17/2022· ELECTRICAL SYSTEM

  The vehicle’s lock/unlock feature is inoperable either via the buttons on the door inside the vehicle or via the key fob. There is no manual way to lock/unlock the vehicle from inside the vehicle. Driver and passengers could only exit vehicle via rear lift gate or thru the vehicle windows. Should driver or passengers have had mobility issues or not been able to crawl through the vehicle to exit via the tailgate, they would not have been able to exit the vehicle in the event of any emergency. Incident has happened on at least 3 separate occasions.

• 11/10/2025· ENGINE AND ENGINE COOLING

  The contact owns a 2020 GMC Acadia. While the vehicle was at the dealer for maintenance, the contact was informed that the radiator was leaking and needed to be replaced. In addition, the contact was advised that there was coolant intrusion. The contact stated that it was not specified if the coolant intrusion had gone into the engine. No warning lights were illuminated. The vehicle was not repaired due to the cost. The contact was informed that the fueling system needed cleaning service, as well as the brake fluid and transmission fluid needed to be serviced. The vehicle was taken to several independent mechanics, and no leaks were found with the radiator. The manufacturer was not made aware of the failure. The failure mileage was approximately 62,000. The VIN was not available.

• 11/08/2021· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  I noticed for months it was downshifting hard but transmission department was backed up I scheduled in September for an appointment October 26 and that morning I received a call to reschedule because they were still behind and had another appointment for November 10th. The morning of the incident 1st it did not want to start it would only turn over. When it started the check engine light was on (I called service he asked if I could drive it and told me to bring it in). Within 10 miles of driving, the car started to slow down. When I pressed the gas the RPMs would go up but the car would not accelerate. I was on the interstate so I started to coast to the side. When I got to the other side of the rumble tracks the fuel gauge warning came on saying no fuel (even though I had half a tank which was verified through the service department) and the car came to an abrupt stop. Had I not gotten over when I did the car would have stopped on the highway. I tried to turn it on to move it farther off the road and it would not. It started to just turned over like it did when I originally tried that morning (all over the occurrences happened while I was on the phone with Adrienne who i contacted through the gm help line).

• 11/03/2025· POWER TRAIN,UNKNOWN OR OTHER,ENGINE

  I own a 2020 GMC Acadia that has experienced multiple major mechanical failures within one year. In January 2025, at around 74,000 miles, the transmission failed completely with no warning or clear indication of what was wrong. The vehicle suddenly lost power while driving, creating a safety risk for me and my child. I was quoted around $12,000 for the transmission replacement initially before getting GM involved. GM covered all but approximately $3,600 out of pocket for me and also covered 100% of the timing cover replacement, which was found to be defective during the same repair. Now, at about 84,000 miles, the thermostat has failed, triggering the check engine light. This repair has not yet been completed and is estimated at around $1,500. My dealership informed me they keep thermostat parts in stock because this failure is so common on Acadias. There were no warning lamps or symptoms before any of these failures occurred. All repairs and diagnostics—including the current issue—were done at the same GMC dealership where I’ve always had my vehicle serviced on time. I’ve been a loyal customer and maintain my vehicle according to the recommended schedule. Despite that, I have faced repeated high-cost repairs on a 5-year-old vehicle with relatively low mileage, which has been financially and emotionally overwhelming—especially as a parent who recently lost employment. Having the transmission, timing cover, and now thermostat all fail in such a short time clearly raises concerns about the reliability, safety, and manufacturing quality of the 2020 GMC Acadia’s powertrain and engine systems. Given that GM has already covered most of the transmission and timing cover repairs and dealerships acknowledge frequent thermostat failures, this appears to be a systemic defect that warrants formal investigation.

• 10/29/2023· ELECTRICAL SYSTEM

  Code P0128. While driving the vehicle gives a "steering assist reduced drive with care" the engine coolant temperature gage goes to 0 and the cooling fan runs until you turn off the car, and the a/c stops working. After replacing the engine coolant temperature sensor and harness the vehicle still does it. There are hundreds of reports of this happening online in forums. This is a safety issue when the vehicle is being driven.

• 10/21/2023· ELECTRICAL SYSTEM,LANE DEPARTURE

  front and rear camera not working blind spot indicator not working side mirrors warning of oncoming vehicles not working radio not working

• 10/21/2022· FORWARD COLLISION AVOIDANCE

  The Automatic braking assist feature goes off at times when there is no threat of hitting something. It happens when pulling into a garage and also on the road while driving. There have been several occasions when this happened and the car suddenly brakes which could have resulted in being rear-ended. The car suddenly brakes even if there is no danger of running into a car (or garage) in front of me. It has not been inspected (yet) but it seems to be increasingly becoming more of an issue lately. There were no warning lamps or messages just the sudden, hard-braking and loud noise/buzzing it makes when it happens. There have been several occasions but I'm listing the most recent one below.

• 09/29/2021· VEHICLE SPEED CONTROL,SERVICE BRAKES

  The contact owns a 2020 GMC Acadia. The contact stated that while driving at various speeds, the brake was applied independently. The contact mentioned that the brake was operating when there was nothing in front of the vehicle. The vehicle was taken to a dealer where the cause of the failure was undetermined. The failure recurred several times. The vehicle was not repaired. in addition, the accelerator pedal was depressed, and the vehicle started slowing inadvertently. The contact stated that the vehicle was locked and needed to be in the park to operate however, once the accelerator pedal was depressed the failure recurred. The vehicle was towed to an independent mechanic. The mechanic experienced the failure with the vehicle. The vehicle was towed to the dealer however, a diagnostic test was not performed. The manufacturer was notified of the failure and provided a case number. The approximate failure mileage was 16,000. The VIN was not provided.

• 09/29/2021· ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE

  The vehicle was purchased brand new from Serra GMC in Washington Michigan in April 2020. It has been back to the dealer 5 times for the same issue, with another 4 times that it was not taken into dealer! Reoccurring issue involves the instrument cluster, All gages and visual indicators go to zero (speed, tach, fuel, temp, etc...) as well as getting a notification that the traction control is disabled, the ABS is disabled, cruise is disabled, and other electronic aid. This happens at highway speeds and to loose all function is a safety concern, it is not repeatable and happens randomly but it is the same issue. The dealer claims to fix the issue but it always comes back. GM has told me to accept the issue as its not detectable however this is unacceptable as it puts my family at risk. I have videos of the instrument cluster going to zero but its to big to attached - I can provide it if you contact me or tell me how to share it

• 09/25/2025· POWER TRAIN,FUEL/PROPULSION SYSTEM

  Vehicle will shutter or buck at variable speeds like, 35-38 mph, 40-45 mph and so on. if I take my foot of the gas and reapply it will shutter buck again at almost any speed. I took it to a mechanic and there are no codes, no check engine light. Shop recommended changing the transmission fluid so we did. Car still responds the same way, shutters and bucks when reapplying fuel pedal or slow acceleration.

• 09/22/2025· FUEL SYSTEM, GASOLINE

  The contact owns a 2020 GMC Acadia. The contact stated that while driving at various speeds, the vehicle stalled. There was no warning light illuminated. The contact stated that while his wife was driving at an undisclosed speed at an intersection, the failure recurred, and the vehicle stopped in the middle of the intersection. The vehicle failed to restart, and the driver was unable to pull over to the side of the road. The vehicle was towed to an unknown dealer, but was not diagnosed because the contact declined to pay the diagnostic test cost. The vehicle was then towed to the dealer where it was purchased, and the fuel pump module was replaced; however, the failure recurred 2-3 months later. The contact stated that the vehicle had failed to start. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 104,000.

• 09/17/2024· FUEL/PROPULSION SYSTEM

  Once again (for the second time in a few months) the vehicle put me and my passenger in an extremely dangerous situation. We were driving down a 55mph country highway catching speed, somewhere around 45-50 mph and the car jerked so violently that it shook us even though we had our seat belts on. It then made a weird noise and felt like it was powering down so I stepped on the accelerator to try to bring it back up to speed and it sped up a little bit, jerked again (not as violently) and turned off. Luckily, since it was a country hwy and no cars were coming, I was able to coast into a driveway. I attempted to restart the car to turn around and go home but as soon as i put it in gear, it would shut off. I tried a few times and it would make a "tick tick, tick" sound but not start. I waited a few minutes and tried again and was able to get it to start, go in reverse and get back home. Once I got home it would not start again. Mechanic says it is the same issue and before, which was also part of a recall for this vehicle having to do with the fuel pump relay. I will be trying to tow this vehicle to the dealership for repair.

• 09/14/2025· POWER TRAIN,ENGINE

  My 2020 GMC Acadia has experienced significant transmission issues, including [slipping / shuddering / “Service Transmission” warnings / loss of drive]. The problem has been diagnosed as a torque converter/transmission failure. GM has acknowledged known defects and issued recalls for 2019–2020 Acadia transmissions related to missing bolts in the start-stop accumulator endcap, which can cause fluid leaks and lead to torque converter/transmission failure. Many other owners have reported similar transmission issues, suggesting a systemic defect with the 9-speed transmission used in these vehicles. Despite these known issues, GM has declined to provide assistance with repairs. This failure compromises the safe operation of the vehicle, and I believe it warrants further investigation and potential recall.

• 09/08/2025· ENGINE

  I'm not sure of the exact sequence of events here, but there are multiple exhaust leaks. One is a crack somewhere in the catalytic converter that is now leaking exhaust from the back of the engine into the passenger compartment. The other leak is at the point of a bracket which fastens the two front exhaust pipes together. At the time we first noticed an exhaust leak sound upon cold start, there were are around 58,000 miles on the car. Now a month later there are still less than 60,000 miles on the car. The dealership originally estimated repair costs to replace the catalytic converter and two front pipes at $3,200. When I had another service garage look at the problem, they asked why the GMC dealer wasn't willing to replace the catalytic converter under the 80,000 mile / 8 year warranty. When I raised this with the dealership, they said this was a "gray area" becasue they believe what happened was that the exhaust bracket at the front pipes failed first, which then caused the catalytic converter to crack. Ultimately, they indicated they would be willing to pay parts and labor related to the catalytic converter (approx $2,000) if we paid the other $1,200 to cover the front pipes. What I don't understand is why, when both Chevrolet and Buick have extended their front pipe warranties on comparable model years of the Chevy Traverse and Buick Enclave, which use the exact same part numbers for the catalytic converters and pipes to 150,000 miles/15 years, why GMC has not offered the same special coverage on the Acadia. Regardless of which cracked first, the front pipe bracket or the catalytic converter, there is likely an engine vibration/movement issue that casues the cracks, giving rise to exhaust venting into the passenger compartment. Since we have yet to be able to schedule the repair (catalytic converter was on back order), we can now only drive the vehicle with the windows down to lessen the exhaust smell. The Acadia deserves a Special Coverage Advisory on this.

• 09/05/2022· FORWARD COLLISION AVOIDANCE

  Twice this vehicle has exhibited this behavior. The collision avoidance system would flash a red warning on the HUD showing that a pedestrian was in front of the vehicle with the vehicle brakes 'hard' engaging causing the vehicle to 'nose dive' even though there was no pedestrian in front of the vehicle. This is disconcerting to those inside the vehicle and potentially be a crash issue with any vehicle following to close behind my Acadia. This may be an issue with the sensors/software used by GM and thus a safety issue that should be reviewed.

• 08/27/2026· ENGINE

  Engine coolant thermostat failed open. Resulting in reduced steering capabilities, and no AC.

• 08/26/2024· ELECTRICAL SYSTEM,ENGINE

  Transmission gave out

• 08/23/2026· STEERING,UNKNOWN OR OTHER,ENGINE

  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.

• 08/22/2023· BACK OVER PREVENTION

  The contact owns a 2020 GMC Acadia. The contact received notification of NHTSA Campaign Number: 22V709000 (Back Over Prevention) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. The VIN was not available.

• 08/13/2024· ELECTRICAL SYSTEM,UNKNOWN OR OTHER,VISIBILITY/WIPER

  Rear-View Camera Failure: The rear view camera functions intermittently. While in Reverse, the screen goes black, with a red triangle and a circle with a line through it. This SAFETY ISSUE increases risk of incidents resulting in injury and/or property damage while the vehicle is in reverse. I understand there already exists a NHTSA RECALL (NHTSA Campaign Number: 22V709000) however, it states that only vehicles equipped with the optional Surround Vision feature are affected. My vehicle does not have the 360 Surround Vision (RPO UV2). but is experiencing the same SAFETY ISSUE!

• 08/11/2021· AIR BAGS,SEATSCrash

  The contact owns a 2020 GMC Acadia. The contact stated that she was rear-ended by another vehicle at a high rate of speed while attempting to make a left turn. As a result, the front passenger seat fractured. The air bags failed to deploy upon impact; the contact hit her head and was knocked unconscious during the incident. The contact was taken to the hospital by ambulance and was treated for a hematoma on her forehead above her right eye. Her husband, who was driving the vehicle, was later treated for muscle pain in his back. A police report was filed at the scene. The vehicle was towed from the scene to an independent mechanic where it remained in their possession. The dealer nor the manufacturer had to be notified of the failure. The contact stated that the vehicle sustained significant damage; however, it had yet to be examined or deemed a loss. The vehicle had yet to be repaired. The failure mileage was approximately 10,000.

• 08/09/2025· POWER TRAIN,ENGINE

  Car keeps throwing Poo14 code for VVt sensor, I’ve replaced the sensors and checked wiring on the side of the road and no damage found, went online and read multiple complaints and recalls on the same issue I’m having with my car. I enter my vin and no recalls have been found. I have a 2020 gmc Acadia Denali 3.6l v6. As well and the rear view camera cutting in and out multiple times anlmost causing an wreck. and a system update didn’t fix the issue.

• 08/07/2020· ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,SERVICE BRAKES

  WHILE IN MOTION- BLIND SPOT SENSORS TURN ON WHEN THEY SHOULD NOT AND VICE VERSA. TRACTION CONTROL HAS FAILED MULTIPLE TIMES WHILE DRIVING. PREDICTIVE BRAKING HAS ACTIVATED IMPROPERLY MULTIPLE TIMES WHILE DRIVING. CAMERAS WENT OUT AND THEN BATTERY COMPLETELY DIED. WAS TOLD FIXING BATTERY WOULD FIX VEHICLE. THIS HAS PROVEN TO BE UNTRUE. VEHICLE IS CURRENTLY IN FOR SERVICE FOR THIRD TIME. REMAINS UNDER WARRANTY, AS I HAVE HAD IT THREE MONTHS. MOST RECENT DATE HAS BEEN USED BUT I'VE HAD PROBLEMS SINCE LITERALLY THE FIRST FULL DAY I HAVE HAD IT.

• 08/02/2025· POWER TRAIN

  Valve body car would not go in park

• 08/02/2022· ELECTRICAL SYSTEM,UNKNOWN OR OTHER,BACK OVER PREVENTION

  Center console display does not start when you start vehicle. Stays blank! This happens occasionally. Sometimes restarting will fix, other times not. There is no rear view camera when this happens. Not sure what else is affected, such as backup warnings.

• 07/24/2022· POWER TRAIN

  After driving 5 miles up the road and 5 miles back home, I put the vehicle in park and it automatically went into neutral and the neutral button started flashing! Along with that I got an alert sent to my iphone (through the GMC app) and in the car saying “shift to park”. The car wouldn’t go into park! The vehicle hadn’t had any error codes or messages before this at all! It was out of nowhere! I drove it earlier that day and it didn’t do it! We also noticed after doing the update on July 7th, 2022 that the vehicle started shifting very hard! I was in the vehicle alone with 2 small babies and I couldn’t cut the vehicle off because it wouldn’t go into park! We had to wait for my husband to leave work and come home to unhook the battery just so we could get out of the car safely and so the battery wouldn’t go dead over night! The following morning we hooked the battery up and the vehicle wouldn’t turn over at all! We just bought this vehicle from a dealership in October 2021! We haven’t had it even a year yet and after researching our year make and model to see what was going on.. we have realized that almost every year from 2019 back had a recall concerning the “shift to park” error! I have been almost 2 weeks without a vehicle while it’s been at the Chevy dealership and it took 5 days for anyone to even contact me! It makes no sense and now they are saying that they can’t tell if it’s covered under my power train warranty because they can’t crank the vehicle to see if I’m within my 60k miles of the warranty! (Which I am.. my mileage is 47,204) This happened to my vehicle on 7-12-2022! I would love some feedback! I am glad I was home and not somewhere stranded with two babies on my own with this heat being so hot!! My email is [XXX] My phone number is [XXX] Thank you so much! I appreciate everything-needless to say I am not a big fan of GMC right now! [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

• 07/23/2022· ELECTRICAL SYSTEM

  navigation system stops working / all cameras stop working give a triangle with exclamation in the middle / radio also shuts down

• 07/18/2021· VISIBILITY/WIPER

  The backup and surround view cameras repeatedly fail. I took it in once and they replaced the head unit. The problem reappeared within days after this repair. The design of this truck makes visibility without the cameras difficult at best and dangerous at worst.

• 07/15/2020· SEAT BELTS,UNKNOWN OR OTHER

  SQUEAKING NOISE FROM THE FRONT END DRIVER SIDE JUST APPEARED WHILE DRIVING. DRIVER SEATBELT WILL NOT LATCH ON THE FIRST COUPLE OF TRIES.

• 07/12/2026· STEERING,ELECTRICAL SYSTEM,ENGINE

  [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.

• 07/11/2024· FUEL/PROPULSION SYSTEM

  The car would not start. It would power on but would not turn over. We had it checked out by a mechanic who tested it and found that the fuel pump module was not operable. When he went to replace it, he found that the one he was removing was aftermarket so this issue had happened before, apparently, before we bought it. We bought it with only 24k miles so it needing to be replaced that early is concerning. And now at around 50k it had to be replaced again. Researching this issue, I have found many folks reporting similar situations. This needs to be investigated.

• 07/08/2026· STEERING

  "Steering Assist Is Reduced – Drive With Care" warning appeared while the vehicle is in motion. This may require increased steering effort and could affect a driver's ability to respond to changing traffic conditions. Any steering-related warning that appears unexpectedly while driving deserves serious attention. P0128 code was shown. The cause was a faulty thermostat housing assembly and needed to be repaired. This is an extremely common issue in this vehicle across many years and needs to be investigated.

• 07/07/2026· STEERING

  Steering assist reduced is the warning. The AC will no longer work and the fan runs constantly. From what I’ve read, it is a popular problem for Acadia owners and the thermostat and sensor has to be replaced. We have not been able to replace ours yet because of the cost.

• 07/03/2024· ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCECrash

  I bought my car [XXX] it had 7 miles. I loved my car. Then in January 2021 things just went crazy. It started with park light on. My forward brake assist warning didn’t work, my back up camera in and out . My braking and stability were on and off. Then weird codes like. Engine at half power, unable to shift soon and speed control out. Then if I hit a bump message went away and speed control back on. I’ve taken care into another GMC dealer because dealer I bought my car at , closed up and took off!! Took it to closet dealer. Not long after repairs same issues started! So many different problems all at once! I have been treated horribly during these issues by dealership and extended warranty company. Dealer had my car for 3 weeks ! They couldn’t figure out the problem. I sat there for 4 hrs sent me home told to come back for 9 mile test! Why in 4 hrs that wasn’t done. So again the unable to shift message back on! I get in my car it starts but won’t shift ! Dealer charged me 250 to tow to shop! When they said I’d be fine ! I had more issues again and again! I’ve been driving over 40 yrs no accidents. I bumped into someone during a huge traffic jam in Ohio! Braking didn’t work no warning even . I should speak to a lawyer and could explain more to a person on filing these complaints. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 06/27/2023· STEERING

  My steering assist is reduced drive with care message is on. The AC is no longer working and the fan is constantly running and sounds horrible. The temperature gauge has not come off of cold. After researching this issue online-it looks like this is a constant problem with Acadias from 2017-current. People are talking about the cost being between $1100-2400 to fix. There is a service bulletin out about this issue(17-NA-158) May 2017 If GMC knows that this is a problem why are they not recalling them?? My car was purchased brand new and of course is out of warranty like most others(the extended warranty doesn’t cover it either) GMC needs to recall these vehicles and fix this issue!!!!!

• 06/26/2026· POWER TRAIN,UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM

  I believe my car should be included in this recall. I've had the dealer check and they say it's nothing wrong with my car. 2020 GMC Acadia Fuel Pump Recall GMC has announced that 2781 vehicles have been affected by a Fuel Pump recall. General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, Cadillac XT6, Chevrolet Traverse, and GMC Acadia vehicles. The fuel pump's jet nozzle may have a plastic burr remaining from the manufacturing process, possibly causing a blocked nozzle and an insufficient fuel supply to the engine. Insufficient fuel supply can result in an engine stall without warning, increasing the risk of a crash. 2020 GMC Acadia Recall Fuel Pump GM will notify owners, and dealers will replace the fuel pump module. The recall began November 16, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202314760.

• 06/22/2026· POWER TRAIN,ENGINE

  Thermostat and cooling sensor went out on my car. GMC issued a special coverage bulletin for 2021 Acadia since it's a widespread issue but not the 2020 (mine) which is also a widespread issue looking online. The repair is over $1000 and should be covered!