Does a 94 Chevy Corsica have a reset switch?
If you mean electrical reset switch, the easiest way to do this; disconnect the negative battery cable for approx. 15 minutes and this will reset your electrical system. If you have a warning light which keeps coming back on, chances are you have a problem with either a sensor or a part. In that situation, you should take your car to a professional mechanic for diagnostic testing if you don't know how to do it.