First order of business is to check for diagnostic trouble codes.It is not difficult on this vehicle and all you need is a jumper wire. Here is a link that shows you how:
http://www.troublecodes.net/GM/
Many auto parts stores will scan for codes free of charge if you wish to go that route.
Post again with the results. I have an 89 98. Great car with a few electrical gremlins. I would buy another one in a heartbeat.