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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 >> Conditions for Setting the DTC

Conditions for Setting the DTC

Condition 1 

TCM has detected an internal temperature condition of 144°C (291°F) or greater for 5 s.

Condition 2 

Ignition voltage is 18 V or greater and the TCM temperature is 50°C (122°F) or greater for 2 s.

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