Transmission Adaptive Functions

Transmission Adaptive Functions

General

If the automatic transmission or Transmission Control Module (TCM) is replaced, the Transmission Control Module (TCM) software is overwritten and the basic settings must be reset. This is done on a long test drive when the automatic transmission is warm by changing through all gears several times while "D" is engaged. After the long test drive, it may be possible that the Transmission Control Module (TCM) might not be completely finished with the running-in process. Thus, the customer must be informed that until the running-in process is complete, the transmission may not change gears or operate optimally. Until the running-in process is complete, there could be hard, jerky gear changes, increased engine speed during gear changes and delayed gear changes.