SSEi95, Looks like you are having the same problem I have. Got my 92SE on 7-1-03.Noticed that when I started it the Check oil level came on for about 20 sec then went out.The dealer "claimed" they replaced the sending unit before I brought the car but the caution light is still coming on at various times. My oil level is full but am still getting the light.I am beginning to have my doubts that the sending unit was ever replaced. Guess I will have to take it to my Pontiac dealer to have it fixed.
1992 Bonnie SE- 88K miles.