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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1148 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0974) >> DTC P0634 >> Conditions for Setting the DTC >> Condition 2

Condition 2

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

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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