I change the battery.
The car is really good, really reliable, and it is every penny you spent on it. I can't believe it, the motor is excellent.
There was no Prizm LX, so your car must be an LSi. Also, the 1996 Prizm was a Geo, not a Chevrolet. For 1998, the Geo brand was discontinued, with the Prizm being redesigned and badged a Chevrolet.