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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - 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 

The TCM has detected an internal temperature condition greater than 142°C (288°F) for 5 seconds.

Condition 2 

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

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