Those square plugs are from Satan. They have itty bitty crimp releases in the corner but to crimp with enough force you have to be too close to the secured part so there is no room to push them out. Cut and replace much more sensible
You had the pump out and cleaned the pump intake. But it sure sounds like a starvation issue.On the road update. After about 60 miles the check ahc came on again. At my next fuel stop I hooked up techstream and cleared the 1763 code. When I restarted it, I heard the pump cavitating. At this point I’m not sure if it’s a pump issue, air in the lines still or maybe even a small leak.
I did a quick bleed at the 4 corners, but I’m unwilling to mess with it until my trip is done.