1995 might be the other oddball ODB year (the 1994 I worked on was the other, and I think there's 2 years that have the problem). If it does fall into this category, you probably won't be able to just pop into any local parts store for a quick code check. My research on the problem revealed that it's unofficially referred to as OBD1.5, it's the OBD2 system, with an OBD1 ALDL port. This makes it impossible for most scanners to hook up to, since you have to have an OBD2
scanner with interchangeable connectors which includes the OBD1 style connector. They do exist, but are pricier and not as common (and possibly not made anymore, the one model I know for sure works that anybody could buy was discontinued, but they still pop up on ebay, etc.).
I got into disagreements with a few different people at the places I went to first (Advance and Oreillys) because they assumed that with the OBD1 port, an OBD1
scanner should work, or the old jump the connector with a paper clip and count the blinking lights method. FWIW, I tried that method myself and it didn't work, the ECM isn't setup to spit out the codes that way, and some people have said that grounding out that terminal could potentially fry stuff. As far as I can tell, I never hurt anything doing it, but I wouldn't try it. Anyways, the ports are visually different, if you do some googling you should be able to find pics comparing the two, and just look at yours, it should be under the driver side dash, almost directly beneath the steering wheel.
That being said, your best bet is either a dealer or a full-service mechanic. They have diagnostic equipment that can handle virtually everything under the sun, including the oddball b.s. from the "transitional" years because nearly every manufacturer was doing their own thing until OBD2 was officially adopted in '96? (that was the whole point of OBD2 being federally mandated, it standardized the entire system across all manufacturers, eliminating the problem of different systems, different connectors, etc., amongst the different manufacturers). The only caveat, because of the cost of what some of this equipment costs, a lot of these places won't just check codes for free, some (and I assume all dealer service shops) will charge a fee, so call around first.
The Corvette Forum I belong to has a wonderful search tool. Thanks in advance for any and all responces.
