A/C slows when under load or accelerating, also code P0418

Several repairs are underway for my vehicle at the moment. currently, my focus is on maintaining some comfort while it is in use and fixing the darn transmission cooler line leak.

I am looking for a diagram like this:

https://www.2carpros.com/questions/2000-gmc-jimmy-front-drive-axle-vacuum-actuator-solenoid-valve

That also includes the corresponding numbers parts indicated in the picture.

I suspect that a transmission cooler line leak has led to the failure of my Secondary Air Injection system tied into the vacuum routing for both the HVAC and 4WD actuators (since i am throwing a code P0418 and there is clearly transmission fluid leaking onto the Secondary Air Injection Pump just below it.)

I honestly don't know if that is possible but doesn't seem unreasonable so please clarify if possible.

The vacuum lines appear to be in good shape considering their age with some signs of crumbling. My intention behind obtaining the diagram is being able to identify and replace parts along those lines in order of most-least likely culprit beyond the air pump.