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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 458 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3976 >> Circuit/System Description

Circuit/System Description

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When the theft deterrent module (TDM) is in the learn coded key state, the TDM checks the current key to ensure it has been configured as a proper vehicle key.

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