Looks Like Even This Inexpensive “Scanner” Has A Disclaimer For 94-95 Model-Years.
"•1994 & 1995 GM vehicles were equipped with several different engine computer systems."
"•Compatible with OBD I 1982-1993 domestic GM and Saturn vehicles"
http://www.autozone.com/autozone/accessories/Actron-OBD-I-code-scanner-for-GM-1982-1995//N-25iq;jsessionid=2703DEC5B0A68968A0322318FF7C0B35.diyprod1-b2c11?counter=1&itemIdentifier=5390_0_0
I’ve never tried it, but a couple of sites suggest that Autozone can pull these old 2-digit codes. I guess you could try.
CSA