My parts manual goes '85-88, but I'm not home to check those years for you. Maybe Thursday night if those years will help at all.
A good GM dealer can probably tell you as well, pick say an '84 1 ton, an '85 1 ton, then jump up to '91 V3500, see if they are all the same. That is of course, if you can find one willing to do that for you.
Unless someone has parts manuals in their private collection for all those years, I don't see any other way to do it, unless you can find others with parts manuals that cover earlier and later years than what I can provide.