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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T30 (MH9) Or 6T40 (MH8) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0634: Control Module Overtemperature >> Diagnostic Aids

Diagnostic Aids

During a road test, the TCM temperature should steadily increase to a normal operating temperature and then stabilize.