I just did this. First remove the wiper arm and cap from the outside. That should reveal a nut you have to remove. The upper rear hatch trim pulls down easily. The bottom large section has three Philips head screws that need to be removed and then that trim can be removed. Both are held in by plastic push pins. Then the black water liner can be removed just by pulling on it. From there you can see the wiper motor on the inside which is held on by two nuts. It took me less than fifteen minutes to do mine. No special tools required.
PSA - It would be nice if people made an attempt while typing to discuss their problems or opinions instead of one long sentence with no punctuation. Maybe I'm cynical, but that really pisses me off. Rant over.
"It's like saying I had a car I got that was painted by the previous owner. I had an accident so painting a car is unsafe." - cykaaro