This is a link to download a copy of the Turbo Regal service manual:
https://drive.google.com/file/d/1fdsjfxkWcJDjhDyxFE4GAjohKrstiXSQ/view?usp=sharingCredit to Jeremy Wood for creating this many years ago.
Note: This was originally designed to be a cd-rom, hence the .iso file format. Windows 10 will mount the image and then you can view the contents. Alternatively you can use a file compression tool (Winzip, 7zip, Winrar) to extract the files from the image.
These are factory GM services manuals -
www.ihadav8.co m is not hosting these files only providing a link to it.