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DTC 55: Begin Configuration Display: Description

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

DTC 55 is always displayed when Body Control Module (BCM) is in diagnostic mode. DTC 55 indicates next 2 numbers displayed are BCM hardware and software configurations. First number following DTC 55 is a hardware configuration. Second number is a software configuration. After configuration numbers are displayed, entire DTC list will repeat beginning with DTC 12.

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