2012 GMC Acadia Owner Complaints

Hello so I notice 3 weeks ago my headlights keep cutting off and on then a week later my radio stopped working, The floor of the driver side is always wet after it rains. I noticed one day the rain started dripping on my feet when I drive after a big rain fall, I believe the car is not sealed properly and now water is coming out from the airbag signs in my vehicle and the car starting to smell like mildew. I think water is sitting in certain parts of my vehicle. I'm not sure what to do.

NHTSA ID

11755081

Incident

Jul 28, 2026

The contact owns a 2012 GMC Acadia. The contact stated that while the vehicle was parked, after pressing the liftgate button the liftgate raised and crashed down independently after several seconds. No warning lights were illuminated. The contact researched and was made aware of an unknown recall; however, the VIN was not included. The vehicle remained at the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 189,352.

NHTSA ID

11754818

Incident

Aug 4, 2026

Mileage

189,352 mi

The contact owns a 2012 GMC Acadia. The contact stated that the vehicle failed to release from low gear while at a stop. The transmission was backed up. The engine light was illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, who confirmed there were no recalls. The failure mileage was approximately 213,766.

NHTSA ID

11739205

Incident

May 20, 2026

Mileage

213,766 mi

The contact owns a 2012 GMC Acadia. The contact stated that while reversing, the liftgate unexpectedly opened, even though the liftgate was properly closed. There was no warning light illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or a dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 125,000.

NHTSA ID

11733369

Incident

Mar 13, 2026

Mileage

125,000 mi

service battery charging station error code keeps popping up

NHTSA ID

11730616

Incident

Jul 1, 2025

Daytime Running light bulb and housing failure. Some 2012 Acadia models recalled under now expired recall for bulbs and deformation of surrounding housing. Apparently the above recall was excluded from this recall and should have been included. Both DRL on this vehicle have failed and surrounding housing has been damaged . Subsequently replacing just bulbs is not possible. The housing melted on the bulb. Photo is available on request. This failure should be considered a fire hazard. GM customer service center stated to me that this vehicle was not included in recall after VIN search. Some 2012 Acadias were in fact included , this one was not. And should have been since the failure occurred as stated in the original recall.

NHTSA ID

11716658

Incident

Jan 28, 2026

The power lift gate suddenly comes down.

NHTSA ID

11705928

Incident

Dec 1, 2024

Back up camera When in reverse the backup camera screen is black or shows very little light making it unusable. Unable to see objects or persons behind vehicle. Despite cleaning camera. No visual damage noted. * It is available for inspection upon request. * Has the problem been reproduced or confirmed by a dealer or independent service center? NO * Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? NO *Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? NO , first appeared over a year ago.

NHTSA ID

11693987

Incident

Oct 1, 2024

The contact owns a 2012 GMC Acadia. The contact stated that while the vehicle was parked, the liftgate independently unlatched and fell midway down, and then independently closed and latched. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 187,000.

NHTSA ID

11693365

Incident

Oct 11, 2025

Mileage

187,000 mi

The contact owns a 2012 GMC Acadia. The contact’s wife stated that while driving at an undisclosed speed, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was able to be restarted; however, the failure persisted. The vehicle was towed to the dealer, but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 172,000.

NHTSA ID

11682845

Incident

Aug 25, 2025

Mileage

172,000 mi

The transmission has all the symptoms of a broken wave plate and/or torque convertor as reported in the first generation T75 transmission service bulletin. This started occurring at 120K. I know the service bulletin was for the 2007-2009 models but the 2012 had the same exact transmission and waveplate. The car feels like it's going to shudder out and die on the highway.

NHTSA ID

11681462

Incident

Mar 1, 2024

The back seat driver's side door shut with such impact as to amputate the finger from an adult. Vehicle was parked on incline when front driver's side door shut, the back door also shut. There were no safety features to protect fingers from the hinge side of back door. The force of the door slamming and lack of any space between the hinge side of the door and its frame caused my middle finger from the top knuckle up to be cut off completely thus amputated from hand.

NHTSA ID

11676183

Incident

Jun 30, 2025

The contact owns a 2012 GMC Acadia. The contact stated that shortly after purchasing the vehicle, the check engine warning light illuminated. The vehicle was taken to the local mechanic who discovered that the catalytic convertor was faulty and needed to be replaced. The mechanic also inspected the vehicle and determined that the steering rack, front struts, and suspension control arms were also faulty and needed to be replaced. The vehicle was not yet repaired. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not contacted. The failure mileage was 130,000.

NHTSA ID

11670219

Incident

May 10, 2025

Mileage

130,000 mi

This 2012 GMC Acadia denali with close to 160k has been in the shop several times due to it randomly stalling out It kept basically locking me out from starting the car a "service anti-theft system" would flash across the dash followed by a flashing check engine light along with a lock and key symbol. A local GM repair shop had it in 3 times for them to tell me they couldn't figure it out or get the vehicle to "act up" they cut me two new keys and tightened up what they claimed to be loose battery cables just for the vehicle to die/stall with a no crank no start happen literally 10 minutes down the road after paying almost 600$ for repairs and that it was towed back 3 times for the same issue spanning over two months of them not being able to figure out the issue. Salvador ended up replacing the anti-theft control module after the 3rd time having to tow it back and forth just to leave the shop and I couldn't start the vehicle the next day after handing over almost another 400$ and less than 15/20 miles of drive time. GM needs to get this issue figured out!!! There anti-theft system locks people out from starting their vehicles more than it does actually preventing actual theft. This will eventually end up causing a major crash at an intersection or highway if the anti-theft system keeps failing it just randomly cuts out power to the engine while driving.

NHTSA ID

11669007

Incident

May 1, 2025

Ratle sound in the engine thinking it may be the timing chain. Code p0430 came on stating catalytic converter bank 2 needs replaced. We replaced o2 sensor downstream on bank 2 code was cleared by shop. After driving a few miles same check engine light came on and i took it to the shop they hooked it up to run the code and it was the same p0430 again

NHTSA ID

11668471

Incident

Jun 8, 2025

Vehicle producing code P2138 then goes into limp mode stating to service stability, traction control off and engine reduced power. Replaced Throttle Body and Acceleration Pedal Position Sensor and error was still present.

NHTSA ID

11664115

Incident

May 9, 2025

I was driving along [XXX] . I stopped at Walmart and shopped for about 2 hours. I was Leaving Walmart and was stopped at a red light at the exit from Walmart [XXX] and traction control light comes on and a message came up and stated traction control off and to service stability control and the vehicle loses power right at the light. I checked everything I could and dis connect the battery for about 30 minutes and connected the battery back up vehicle still would not start. After sitting there for 3 hours the vehicle starts up. A week later the same thing happens again. I had to go through all the steps again so after a couple of hours. The vehicle started up. A few days later it happens shin but this time I'm at a stop sign on a busy road. I called Road side service for a tow. No one showed up so I went through Ll those same steps of disconnecting the battery and hooking it back up after a couple of hours and it stated up. I drove it home and started doing some research and found something saying to change the brake pedal position sensor so I done that and it worked for a few days and started doing the same thing all over again. S week later I drive it to the store and got almost home and the vehicle shut down again and would not start back up. I had it towed to my uncle shop Nd he done a diagnostic on it and got about 4 or 5 codes. All of those things are very expensive to purchase. I just ran the Vin to check for recalls on the vehicle but couldn't find any but it should have been a lot of recalls because there are so many of these vehicles the exact same model and year with trouble with stability control ND brake and traction control issues. All the issues they hD on this car thT I have should not have been sold to anyone except the manufacturer. I wish I could just get my money back that I paid for it. $4700.00 not included in the work I had done like the cv axles replace on both sides in the front. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11662691

Incident

May 21, 2025

Transmission issues

NHTSA ID

11658306

Incident

May 1, 2025

The timing chains went on the engine at 148,000 miles. Which is known for 3.6l engines. Gm needs to own up to their faulty manufacturing on these engines. I need this vehicle for my children. This is the second time I have to put another engine in this truck. Thankfully when I purchased this vehicle it had a warranty but it only cover so much so I had to put a jasper motor in it instead of a brand new one from GM itself and now this jasper motor died after only driving it 22,000 miles and getting my oil changed every 3,000 miles. Single mom of soon to be 3 children i can't afford another 3 row seating Vehicle.

NHTSA ID

11628028

Incident

Oct 28, 2024

The contact owns a 2012 GMC Acadia. The contact stated that while closing the hatch of the vehicle, the driver's side ball joint hinge fractured, causing the bar holding the hatch to scrape off some of the tints of the windshield. The contact stated that he was able to stop the hatch from fully closing to prevent the hatch from braking the windshield. The contact stated that the hatch had not been opened since the incident occurred to prevent further damage to the windshield. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.

NHTSA ID

11623619

Incident

Oct 14, 2024

Mileage

140,000 mi

The contact owns a 2012 GMC Acadia. The contacts stated that while driving at an undisclosed speed, the vehicle lost velocity while depressing the accelerator pedal. The message "Engine power reduced and service traction control" was displayed temporarily. The contact managed to pull over the shoulder of the road and had the vehicle towed to a local independent service lot where it was diagnosed with metal debris in the engine which required an engine replacement. The local dealer was contacted. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 128,000.

NHTSA ID

11620535

Incident

Oct 8, 2024

Mileage

128,000 mi

While driving the vehicle it just shut off for no reason which created a safety hazard! We were then forced to have it towed to a nearby repair shop, because we did not want to take the chance to start the vehicle and have the same thing happen again. The repair shop did their diagnosis and informed us it was a broken timing chain but couldn’t tell us if any other damage was done to the motor, without completely tearing it down. The decision was made to wait and it remains sitting at the repair shop.

NHTSA ID

11610566

Incident

Aug 9, 2024

The car shutdown mid-driving do due to a power system issue, which was dangerous on the highway. I had the car battery and the alternator replaced and it did the same thing again 8 months later. Says the battery system needs servicing

NHTSA ID

11610064

Incident

Nov 28, 2023

142,000 miles and timing chain is bad. A very known issue and a very common issue in the GMC Acadia Denali which I think should be repaired by GM! I only owe $4,000 on the car and it's going to cost me 3,000 to get it fixed that is ridiculous so I think you should stand behind your workmanship and your quality of vehicles that you build GM and fix it take care of your customers as we keep buying this type of junk

NHTSA ID

11599555

Incident

May 24, 2024

Transmission is slipping, shuddering at low speeds making car unsafe to drive

NHTSA ID

11585144

Incident

Apr 2, 2024