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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 506 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0634 >> Circuit/System Description

Circuit/System Description

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

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