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Hummer
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2008
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H2 4D Utility Wagon
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Repair and Diagnosis
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Transmission
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Automatic Trans
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Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971
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DTC P0667, P0668, or P0669
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Conditions for Setting the DTC
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P0669
Conditions for Setting the DTC: P0669
The TCM internal temperature is less than -249°C (-416°F) for greater than 10 seconds.