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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 P0667, P0668, or P0669: Control Module Temperature Sensor >> 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 temperature sensor provides the temperature of the TCM. This temperature reading is used in various shifting and diagnostic routines in the TCM software. This fault is handled inside the TCM and no external circuits are involved.

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