I looked up the part number for the fuel injector O-rings... 17112222. But GMparts.direct does not list that number. Where is the best place to get the replacement O-rings for a 93 */C engine?

I got mine from the local dealer, they had them in stock. If I remember right, they actually gave me ones for a v8 engine. Apparently they have "updated" the O-rings and they use the same O-ring that one of the v8'* do. Eitherway, dealer has them, and they weren't too expensive.