Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Here is what you will need to do to replace the regulator on a 4.3W engine.
I am not so sure I understand your picture, but I do see the throttle body. The upper intake manifold is under the throttle body like this.
The regulator is on item #13. Let me know if this still does not make sense.