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U0100-00 Engine Control Module -ECM-Pcm- Can Signal - Missing Message

The COMMUNICATION DIAGNOSTIC PROCEDURE MUST be performed before replacing any component(s) or module(s). Perform the COMMUNICATION DIAGNOSTIC PROCEDURE. Refer to COMMUNICATION DIAGNOSTIC PROCEDURE or COMMUNICATION DIAGNOSTIC PROCEDURE (EV) .

NOTE:

When performing the COMMUNICATION DIAGNOSTIC PROCEDURE, note that MISSING MESSAGE DTCs are similar to LOST COMMUNICATION DTCs.