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Home >> Buick >> 2017 >> Verano Base, Gas >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission - 6T40 (MH8) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0634: Control Module Overtemperature >> Circuit/System Description

Circuit/System Description

The transmission control module (TCM) temperature sensor is located inside of the control solenoid valve assembly which has no serviceable components. The TCM monitors the TCM temperature sensor for over temperature protection.

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