Transmission Control Module
The TCM receives information from various input devices and uses this information to control solenoids on transmission valve body. TCM controls transmission shifting and torque converter lock-up.
TCM contains a self-diagnostic system, which will store DTCs if a failure or problem exists in electronic control system. DTC can be retrieved to determine problem area. See DIAGNOSIS & TESTING . TCM is located under left side of instrument panel, to left of steering column. See Fig 1 .