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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 P0973 To DTC P2764
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DTC P2534
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Conditions for Setting the DTC
Conditions for Setting the DTC
The TCM detects 2 volts or less on the ignition 1 voltage circuit at the TCM for 1.0 second or more.