2012 GMC Acadia power train problems
43 owner complaints filed with NHTSA name the power train on the 2012 GMC Acadia — 15% of all complaints for this model year.
What owners report
“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…”
filed May 21, 2026
“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…”
filed Aug 18, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Power Train problems in other Acadia years
| Year | Reports | Share |
|---|---|---|
| 2025 Acadia | 4 | 7% |
| 2024 Acadia | 7 | 13% |
| 2023 Acadia | 12 | 31% |
| 2022 Acadia | 4 | 9% |
| 2021 Acadia | 17 | 12% |
| 2020 Acadia | 21 | 22% |
| 2019 Acadia | 152 | 40% |
| 2018 Acadia | 162 | 42% |
| 2017 Acadia | 234 | 33% |
| 2016 Acadia | 20 | 9% |
| 2015 Acadia | 17 | 7% |
| 2014 Acadia | 34 | 7% |
Other reported problem areas on the 2012 GMC Acadia
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.