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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0218-P0731)) >> DTC P0613 >> Circuit Description

Circuit Description

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The transmission control module (TCM) continually performs a series of processing steps, known as a processing loop, during normal operation. The TCM must complete the processing loop within a specific time limit. The TCM will set if it does not complete two consecutive loops inside a predetermined time interval.

DTC P0613 is a type C DTC.