The picture I posted was in a GM CCC emissions book and was used during the training course and goes into depth about emissions, EGR, EFE, CCC carb and anything that the ecm controlled. A lot of information you won't find in a service manual.
What training course was that? Who conducted it, and what was the purpose of the training?
I might add, the diagram in that picture looks like part of a trick question to find out if someone has any mechanical sense. Because it doesn't make any. (But then, neither do the solenoids on my car, for their purpose .... )
Last edited: