[ImperialCrown]

The EGR valve and solenoid may pass all of your actuation tests, but the PCM's monitor test may still fail it if it feels that the EGR calibration or flow characteristics are different than what the PCM test would consider a 'good' passing EGR system.
Is there any label or stamping on the EGR itself? If someone has replaced it, it may be 'generic' and will not pass the PCM monitor test for your specific application.
You would want the correct EGR for the vehicle installed to get a passing EGR.

 

[ImperialCrown]

4287646AD is the correct part for your application. A 2007 build date could place its installation anytime after that. There was a TSB # 18-26-95 for an improved (non-kinking) EGR vacuum harness from the brake booster that could cause code 32. Too much or too little EGR flow can cause code 32.

 

[ImperialCrown]

The upper hose could also leak if the aluminum outlet pipe got 'crusty' oxides where the radiator hose pushed onto it. There should be no external leaks at the radiator cap. It's cheap enough that I would replace it if this is the case.
The short EGR pipe fitting and short rubber hose to the base of the black, plastic transducer carries exhaust gas pressure to indicate the amount of exhaust back-pressure to the transducer. I have seen plugged cats push more exhaust through this pipe than it should and melt hoses and transducers.
The transducer halves do come apart and the inside diaphragm can be inspected for water, rust and tears. We know that the transducer solenoid works electrically, but it can fail inside here as well.
As long as the vacuum hose from the booster shows no kinking and delivers good vacuum to the solenoid, you should be OK.

 

[ImperialCrown]

The EGR stem won't move much when the engine is revved freely. Only under load (like power-braking) will it move much more. The PCM determines the real EGR test.
I would go to a salvage yard and pick up a used transducer (if possible) for a swap or comparison. The transducer failed more often than the valve, but both are always sold together as a matched set.
I believe that the PCM is being truthful in setting the EGR fault code.

 

[ImperialCrown]

Follow the instruction sheet. Make sure that the gasket surfaces on the front head and EGR tube are clean and use the fresh gaskets and bolts that (should) come in the kit.