Hey there dmorlow,
I hope you put in a dealer fuel pump...Not aftermarket
Thats good that you cleared the codes. Now see what happens if the check engine light comes on again. Don't go far from home until your sure the check engine light situation is solved. You can always try to call a dealer (Olds) (GM) ask for service dept., and say that you have a code or two and what does it mean?
Happy New Year!!