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Home >> Chevrolet >> 2007 >> Optra LS, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transaxle - AISIN 81-40LE - Specifications, Component Locations And Repair >> Description and Operation >> Electronic Component Description >> Transmission Control Module (TCM)
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Transmission Control Module (TCM)

The transmission control module (TCM) primarily controls shift points and lockup engagement. It is located on the driver side under the instrument panel.

The transmission is controlled by an electronic shift system. The TCM processes input signals. From the information received, the TCM controls the transmission hydraulic system.

The electronic shift system consists of the following components.

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