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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 358 (Automatic Transmission - 6T50 (M2D) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0634: Control Module Overtemperature >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

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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