93 Lumina Chime Issue

I have an odd issue with my 93 Lumina. I was driving home from NY to SC last night and my seat belt light came on. It stayed on until I shut the car off. When I restarted the car, the light seemed to work normal, then my door locks kept trying to lock while I was going down the road. Now, when I open the door, I get the chime going off like the lights are on, but it then stops. Also, the seat belt light doesn't come on at all when you start it, the doors do not automatically lock, there are no chimes for anything anymore. I've checked the fuses and they are all in good shape. Any suggestions or help would be great.

Any water issues? Like a rainstorm, or carwash? because intermittant problems might indicate some water leaking in somewhere and shorting things out.

ALso maybe something has gone awry like the ECM or the harness detaching/bad connections due to vibration...ride down any bad gravel roads just before this?

Do you get any flickering or blackout/brownouts on the lights that might indicate a bad connection or powersupply problem?

More info could help.