@CarveItUp228 Congratulatuons, you are now better than 90% of the technicians out there!  You fixed instead of replaced.  Even with your learning and trial/error, you probably spent less than 10 hours at a shop rate of $180 fixing your boat.  Perhaps even had a few beers while doing it.   I may be sentimental here but I’m proud when I see people DIY it and it works out well.  
 

Great job!

Grab a can of LPS-3 and coat the motor and pump with it, especially where the wires and screws are.  Freshen it up a few times a year.

OK, I just happened to have some (fairly old) OMC power trim fluid....and it was almost exactly the right amount. I didn't fill it completely full....left maybe half an inch of clearance with the top. Bolted the parts back together and tested with the bench battery and....it worked! Piston would extend or contract as I switch the leads on the battery terminals.

I then decided to go ahead and put back on the boat. 2 Hours later I had it in place, wires back through the transom and connected...and....I tested it and...it worked!

Hopefully that fluid is ok. I will test it on the water tomorrow!

Mine sat waiting for transport for a couple weeks. I don’t recall how many exactly, but want to say about 3.  My dealer wasn’t the best with communicating with me on the expected arrival, not sure if it was them or GM, but I found out it was delivered to the dealer when I drove through the parking lot on a random Saturday after a kids bowling birthday party on my way home.

The injectors in the pictures look like the ones I used, I think I ordered 24.5lb injectors since I was putting in the ZZ4 cam.