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"codes to be transmitted" ? Not sure what that means, so putting the post aside, here is a brief semi-detailed summary of a PCM/ECM and the logging and lighting, it does.
The PCM/ECM is the computer that lights the check engine light. Think of the PCM/ECM as the windows computer that runs the truck. Along with running the truck(fuel, air, timing etc...shifting, cooling, etc...etc...) it monitors certain parameters of the truck. Temperatures, knocking, mis-fires and a host of other stuff. If a monitored parameter is out of tolerance, then a code is stored in memory. This code is defined as, and is, applicable to the parameter that was out of tolerance. If the code set in memory, due to the out of tolerance condition, is emmisions related then the PCM/ECM turns on the check engine/service engine (CEL/SEL) light. If a mis-fire is detected the light often is programmed to blink. So, does that help any?
As a side note, you need to find out what's wrong with the truck 'cause 8 injectors don't just fail for no reason. Even on our beloved 6.oh's.
2006 built 05/05 XLT CC DRW PSD. Captain chairs, sunroof, polished aluminum wheels, 6speed, manual 4x4. 285K miles with 130K problem free miles on new engine.