Obd???

I have a 1994 Chevy Lumina van, I am wondering if it has an OBD 1 sensor on it, and if it does can you dignose it by the number of blinks the check engine light gives off such as in Chrylser's of the same time, if anybody has any information let me know, thank you.

A very few very early 94 models had OBD1, BUT, they changed the way the codes were read, so you couldnt do it yourself anymore. After that they used OBD2 which requires an OBD2 code scanner to get the codes. Most auto parts stores will pull codes for you for free though.