CEL is on, but can't pull code
Hi everyone I have a 93 LS with a KLZE
My CEL is on but when I tried to pull a code the CEL lights up, turns off, and lights back up and stays on.
Has anyone else had this problem? I tried searching but found nothing conclusive
The engine was swapped by one of the previous owners and the one I bought it from didn't know much about it so I don't know if I have the probinator chip, which I've read might have something to do with this.
Any advice is appreciated