I don't know of any comprehensive list...but the GM EPC cross-references part numbers. Just look up the HUMMER part you need and then scroll to the bottom of the screen ("Product Fitment/Applications") and it'll show you what other models and years the same part appeared in.
Two online EPCs that I frequently use are:
http://parts.nalleygmc.com/
http://www.tonkinonlineparts.com/
FYI: I can't find a wiper motor - front or back for the deuce or the H3 - that was interchangeable with ANY other vehicle. You can't go wrong with the EPC.