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Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Automatic Transmission - 6T30/6T40 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0634 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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Condition 1 

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

Condition 2 

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

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