Wow, that was a hard one to find. I even tried to buy a manual at the auto parts store and they couldn't even order one.

I had to find a youtube video for a 1998 Catera motor removal and use that to make the diagram.
Anyway, you can find the diagram now on the main site. I hope it helps. There were 2 different motors I found, well, images of the motors, so let me know if it's not the right one and I'll make the other one.
Thanks for posting your request. With this being a hard diagram to find it is an excellent addition to the site and could save some body a lot of time in the future.
Thanks, Rob
