So I got the low oil pressure light the other day, ordered a new pressure switch AC Delco 95961350. Definitely better than the worn out one I replaced, but the oil pressure light is solid at idle to about 1200 or so RPMs.

I saw another thread talking about replacing the switch with the AC Delco D1831A since it comes on at a lower pressure. Worth a shot or should I look into pressure testing the system to rule out the other problems?