If you are getting 12v showing at the Blue/Green wires that go to the motor at the solenoid connections then you have one of three possible issues:
1. Bad ground on the motor not completing the connection.
2. Motor is shot...last one i had issues with was also screeching turned out the motor at some point got moisture in it and was rused internally...you would never know it from the outside!
3. The hydraulic pump is frozen.

I ended up pulling the motor-pump-reservoir unit and bench tested the motor. Dead as a doornail. Opened up the motor and it is rusted badly. Just like Wally said above, it looked fine from the outside!!

I'm wondering about the pump as there was a tiny few drops of water when I took the motor off. Concerning, but pump looks ok from outside lol... Took a screwdriver and manually turned the coupler and there was pressure to the UP port when a finger is held over the hole. So it is definitely not frozen. However, there is no pressure when turning the other way and holding finger over DN port. This may be ok as I've read on here somewhere that pressure down is about 1/5th of the pressure needed to move it up? I would like to buy just a motor, but then if pump didn't work I'd have to replace it which is pricier alone than in a combo kit with Pump, Motor & Reservoir. I'd then have one too many motors and a lighter wallet. So probably will just go with combo to begin with.

I hope this solves the situation and something else like corrosion doesn't pop up as another reason for trim problems ...

Thanks to all who have helped me so far, I appreciate it! Will let you know how it shakes out in a couple days.

Check with Gordon Demarco on fb or sick stinger or full force on here..all of them part boats and probably have a good assembly for sale..

I will thanks, phragle. I looked him up on FB but not sure which Gordon Demarco?? I'll check the others as well.

Hey guys, I want to say thanks to all who gave out some wisdom. Everything is is back together and flushed, rewired, re-solenoided, and re-motored! Works great! I've decided to sell the boat but am having 2nd thoughts. Here is a link to the page with pix and info. You guys rock!

I suppose I need 10 posts for the url like the pictures, but I think I'm pretty close to that!. In fact, this is my 10th post, so my next post will have the link! Yaaaay!