Automatic Transmission Control Module Problems of GMC Acadia

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.

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Check engine light came on for the tcm. Car has had issues shifting (very rough shifting) and the manual shift option does not work. Was told the tcm had to be replaced. Attempt was made to replace it with a refurbished tcm but that couldn't be programmed to the car. Was then told I would have to buy a brand new one, which is very expensive, and that there was no guarantee that would fix the problem. Car can not be driven over 20mph without risking burning up the transmission. Car also jerks forward very hard when trying to gently accelerate.

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The contact owns a 2019 GMC Acadia. The contact stated that upon parking the vehicle and attempting to shift the vehicle into park, a warning message displayed reading "please shift into park. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The not-in-park warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission control module. The vehicle was repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 11,000.

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Looses power while driving. Cannot jump the battery it needs to be recharged every time. Power steering stops working while driving( low rpm and when stopped) dangerous for merging or lane changes. Engine shudders when trying to accelerate. Tcm/ ecm replaced 2020. Problem still persists. Whining noise upon start of the vehicle. Auto start will not work. Traction control light, check engine airbag and.

See all problems of the 2011 GMC Acadia 🔎.

I've come to find out my car is throwing a code for the tcm being stuck turns out this is an extremely common issue as well as the wave plate for this model GMC should be held responsible being this is their design flaw and seems to be an issue across the board for almost all Acadias of these years.

While driving at highway speeds last week my 2012 awd Acadia having a major malfunction. 1. While driving, door locks engage/disengage 2. Trans appears to slip into neutral (high rev/ no power) 3. On the dashboard digital readout the transmission "blinked" into p from d (while driving) 4. Traction control engages/disengages and the vehicle lurches forward and hard stops 5. Trans enters some sort of limp home mode where it allows me to drive only up to 60mph, @4000 rpm (like 3rd gear) this process repeated continually for over an hour drive to the dealer, normal operation appeared to occur at speeds below 45mph, but only temporarily and the issue continued again at the lower speeds. I call onstar and they pull codes for me while enroute to the dealer: ecm code =u0101 tcm code= none (failed to probe module) abs code= u0101 abs code= c0561 (issue with traction control system)- "service within 7 days" a quick search in automotive forums reveals several other people with almost the exact same issue, with no specific solutions.

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I have had the same problem for 3 years now and have taken my vehicle to a gm dealership many times for the same issue and it is definitely an issue . My car keeps throwing up tcm issue and ecm and I have asked for the modules to be checked. I have reasearched these issues and it seems to be the same with many vehicles like mine so that should be a red flag. My car will slow down, power reduce engine, traction control off, and my steering will be difficult and sometimes I can’t even get off the road in time, which is very dangerous. I have seen recalls on electrical issues and wonder if my vehicle has damaged recall parts. I am a single mother who has to work and get my child to school and can’t do so properly with my vehicle doing this all the time. It’s very frustrating.

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The contact owns a 2008 GMC Acadia. While driving 40-45 mph, the engine would not switch gears. The contact pulled over to the side of the road, turned off and restarted the engine, and was able to drive the vehicle to the contact's residence. The contact experienced the same failure 18 months ago. The vehicle was taken to todd wenzel Buick GMC (614 n state rd, davison, mi 48423) where it was diagnosed that a new transmission control module was needed. The manufacturer was contacted at 1-800-462-8782 and did not assist. There were no recalls associated with the vehicle. The failure mileage was 124,000.

The contact owns a 2007 GMC Acadia. While driving 25 mph, the gear shifter became stuck in gear without warning. The failure was persistent. The vehicle was taken to a dealer where it was diagnosed that the transmission control module failed and needed to be repaired. The vehicle was repaired; however, the failure recurred. The vehicle was towed to the dealer where it was diagnosed that the transmission failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 110,000.

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After picking up our new truck we noticed that the vehicle's engine was short jumping at low speeds, especially when in traffic - at first when this occurs you have to almost ask yourself did I hit the gas pedal instead of the brakes. After only a couple weeks of ownership we dropped off our new vehicle to be repaired. Dealer 's GMC certified technician had to consult with GMC corporate to help troubleshoot and then decided to replace the lower and upper engine valve covers, and the transmission control module; which was a quick fix that lasted a little over a week. Now our brand new vehicle is once again a lemon and repeating the original issue. After contacting GMC and after requesting another safer new vehicle since its common sense that a brand new truck should not have any internal engine or transmission problems being that we have a four year old, two year old, and a newborn, I am a concerned for my family's safety; GMC corporate response was "don't you think that 1 car in 300,000 would have an issue". . . At the end we are not talking about a loose belt or wheel out of balance, but an internal problem which there tech told my wife that he could not guarantee that the care was safe during his test drive. The dealer's manager response was "the car is not our problem when it leaves our lot", it then falls under the manufacture warranty; which makes sense, but once again we are talking about a brand new car, not a car that has some usage. Now twenty days in the shop and only 2,000 mile on the vehicle they decided to replace the transmission, but still can't tell us what is wrong with the vehicle; which now when braking on the highway it downshifts hard and almost feels like somebody rear ended you.

See all problems of the 2015 GMC Acadia 🔎.

Purchased vehicle from dealer with 72000 miles with 4yr/48000 mile warranty. Warranty ran out this summer, mileage is now 133000 miles. Problem has been intermittent since early last year, but mechanics were not able to help because problems were not 'presenting' as the check engine light would go on and off at different times (just as the recalled service air bag light did!). In December 2015, the check engine began staying on all the time and the gears did not shift correctly. The tcm is messed up, which is a very common problem with all Acadias, apparently. We had a very scary issue on xmas eve with the gears downshifting while we were on the highway and it wouldn't let me go over 20mph! we took it to first dealership over an hour away and the guy came out with a handheld computer, put in on our car, said it is our tcm and $3800 to fix it. He never put anything in the computer, so we didn't have an official diagnosis. We spoke with gm and they said to get the diagnosis and they would see about helping us to cover it. So, we got the diagnosis today, it is the tcm and no help. They said it is out of warranty, gm won't cover it, it is up to the dealer to cover it, etc. We have been told so many different stories about why they won't cover it, just that they won't. Our VIN number is literally 6000 off of the recall list! it is a common problem and should have been a national recall! does anyone know of a class action lawsuit? I would love to be a part of one.

I have a 2007 GMC Acadia. I have had to have multiple work don on the transmission and yesterday it slipped out of gear while driving. I tried to accelerate and the engine revved and the rpms went high but the transmission would not shift. Had I been on the highway at a high speed this could have been the cause of a serious accident. I took it to my dealer and they said the transmission control module had went bad and it cost me $1400. 00. . . At 83,00 miles???? I think GMC should take responsibility for the terrible workmanship of their transmissions in the 2007 Acadia.

My Acadia (which I just bought in March) began shifting harshly between the 3rd and 5th gears and my check engine light came on. The next day I took it to an auto repair shop where I had the codes read and was told I had a problem with the 35r waveplate and the transmission control module. I was told I would have to pay $600 just to have my transmission taken apart to diagnose the extent of the damage. I was told that a drum came apart causing "extensive damage" and that I would either need a complete transmission rebuild for $3600 or a brand new transmission for $4000. This car has less than 100,000 miles on it (although I know that is high for the year, a brand new transmission for a fairly new car is extreme). I was told by the mechanic that this is extremely common for the 08 Acadias and it was not uncommon for this particular car to go through several transmissions before reaching the 100,000 mile mark. This is a joke. GMC needs to recall the car and pay the costs of the many owners who are having to pay thousands of dollars to repair a part that should not have been put in the car in the first place!.

Transmission failure. . . First noticed car hesitated accelerating while attempting to pass or getting on interstate and rpms would jump up to 4-5k then hesitation in accelerating before jumping into fear. . . Then later increased rpms at30mph and would not accelerate. This happened many times but would go days/weeks in between incidents. After taking to shop and researching this is a very common problem with this model. . . Wave plate failure in tcm ( poor quality part) this is so dangerous. . . . After first incident I became more aware of how the car would behave and was better prepared when it decided to jump into a higher gear or hesitate. Car is being repaired now and thankfully my family stayed safe. Too many owners with same problem for this safety issue to be ignored. Please help.

1-heated washer removed, catalyst converter replaced, timing chain issue, fuel pump, head lights all replace due to defect and now @ 89,500 I have a major transmission issue a po752 code has been noted and the car is 5. 5 years old and believe this is a defect GMC is aware of and failed to fix, even sugggested by amaaco the tcm may even need replacing. Feel like this car has been one defect after another which led to other defects happening and premature wear and tear on other parts.

Engine light on vehicle, the vehicle will not shift into gear - happened three times had to pull off side of road to not get hit from other vehicles and 5 year old was also in car with me. Had to shut off the car multiple times to get started again and for it to finally shift into gears. Took car to dealer and they replaced transmission control module valve. On 4/1/13 car would not go into reverse on incline. Had to drive forward and reverse on flat area, dealer now says they found broken wave plate and burned 3-5 reverse clutch. Also found internal defect park of valve body. Car is only 5 years old and has only 55 thousand miles on it. Saw other issues on this database all with broken wave plates on 07 Acadias. Paid thousands of dollars to get this fixed.