Here's a source in Finland: **broken link removed**
Th delphi website **broken link removed** is a bit hard to navigate, but you should be able to find the full part number. GM dealers should be able to get the parts.
Terminals would be separate, and each piece of the connector would be separate. e.g. pins. housings, polarization, boots, etc. Mouser.com generally sells a lot of Delphi connectors.
You will need a crimper : Hozan P-707 may work and possibly a removal tool and wire if you roll your own. You'll possibly need wire too.