Circuit/System Description
WARNING: This page is about a different variant/trim than selected.
The transmission control module (TCM) continuously monitors the system voltage on the Ignition voltage circuits. The TCM is located within the control solenoid (w/body and TCM) valve assembly and is not serviced separately. Lower than normal voltage may be inadequate to operate the transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation, which may result in internal transmission damage.