1999 Chevy S-10

My S-10 has been acting up for a little while mostly when it is raining or damp outside. It will jerk like it wants to stall at low rpm's after shifting;but not excessively low, I have shifted near redline and this still occurs. When it has been running for a while this will disappear and it never happens on a sunny dry day. About 2 days ago the truck wouldn't start and I had the starter replaced. Now it turns over fine but runs rough and has stalled. It feels like it is a fuel delivery problem to me and I have been through a tank of gas several times since I started. I pulled the trouble codes and it listed the Intake O2 sensor and the crankshaft and camshaft position sensors. Is this just an electrical problem that can be fixed by replacing the sensors or is there more to this? Thanks.