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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Automatic Transmission Diagnosis - ALLISON) >> Diagnostic Tests >> DTC P0880: TCM Power Input Signal >> Circuit Description

Circuit Description

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DTC will set if an abnormal power-down sequence has occurred. This condition means the Transmission Control Module (TCM) has lost battery positive voltage circuit (supply voltage) before it has finished saving information from that drive cycle. This process is usually completed in less than 10 seconds.

This is a type "C" DTC.