Automatic Transmission Control Module problems of the 2007 GMC Acadia

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.

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.

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.