So i recently purchased an OBD I scanner for my 1994 Z28, After it makes the noises from under the hood the SES light doesnt come. When i drive though the light turns on and the Check Gages light stays on whenI try to scan it. Any suggestions? thanks...

 

According to the info Z28 Pete gave us not all scanners for the OBD 1 will work on the 94. In the Computer topic in this forum there's a thread all about this. Check it out.