Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Module, Transmission Control (TCM): Description
The transmission control module (TCM) (3) is inside the car, behind the instrument panel to the right of the left kick panel (1) where the clutch pedal would be located. New controllers are shipped with generic software but need to be initialized for the vehicle into which it is installed. Refer to MODULE, TRANSMISSION CONTROL (TCM), STANDARD PROCEDURE .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.