You are going to have to drop your pan and see if any metallic sludge is hiding out there. The last time this happened to a fellow member, he had to leave his car at my house while he and his brother proceeded to Virginia. It was in the very early stages of rod bearing failure, and had just started to be more pronounced when I pulled his old engine. When we pulled his pan before he left, there was metallic sludge at the bottom, and bits of chewed up "stuff" clogging the oil pickup tube screen.
SSEi'* will require you to loosen your oil cooler lines at the filter housing before you are able to drop your oil pan, and I think the inspection covers need to be removed from the bellhousing. Other than that, it'* pretty straight-forward.
At the "gee, I hope THIS is the issue" end of scale, your oil pressure sending unit may be on the fritz.
EDIT - Don't try to replace the rod bearings. Don't ask how I know.
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.