Transmission Control Module (TCM)

The Transmission Control Module (TCM) is an electronic device which monitors various inputs in order to control various transmission functions. These functions include shift timing and quality, TCC apply and release, line pressure, and transmission diagnostics. The TCM receives input from electrical sensors, switches, solenoids and other components in order to process for use within the control program of the TCM. Based on this input information, the TCM controls certain transmission output functions and devices. The TCM is located behind the kick panel beneath the glove compartment, in the passenger compartment.