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Circuit/System Description

WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control module (TCM) uses the serial data network to signal the engine control module (ECM) that the TCM is requesting malfunction indicator lamp (MIL) illumination. A DTC is set in the TCM and the request for MIL illumination is sent when the TCM has determined that a failure that affects emissions has occurred in the transmission control system. When the ECM receives the message from the TCM, DTC P0700 will set in the ECM.

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