An "OBD2 scanner" doesn't work on a '95, because '95 is not OBD2. Therefore, you'd need a scan tool compatible with what is now known as "OBD1". They tend to be more expensive, and need a different adapter/connector for every brand of vehicle since there's dozens of proprietary connector bodies on the vehicles. Every manufacturer used a different style of connnector. GM alone had several depending on application.
A decent scan tool will work with GM products from 1980 1/2, onward to the limit of their software--often post-2000, perhaps all the way to 2024. Mine goes up to 2007, but since I don't own a vehicle newer than 2003, I'm all set.