One problem related to automatic transmission control module has been reported for the 2021 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Jeep Grand Cherokee based on all problems reported for the 2021 Grand Cherokee.
Started noticing hard reverse shift when vehicle was cold. Took to the dealership, tech could not find any issues other than it shifted hard in reverse. Tech found no leaks, performed pcm reflash. Still no problems found. Tech did not check transmission fluid level on vehicle. Must be checked at the dealership. Tech recommended replacing transmission even though could not find any issues. A few days later while driving at highway speed the vehicle suddenly downshifted to 3rd gear nearly causing me to loose control. Vehicle would not shift into fourth gear. Had to limp vehicle home.
| Power Train problems | |
| Automatic Transmission Control Module problems |