Thanks for everybody'* help.

I replaced my starter and she runs like a top.

I did notice that I had a SES light and using a staple between the a & b terminal I got 1 long followed by 18 short. VIN L

I could not find anything for that combo.

Anybody run into this before?

Thanks

Check this thread out https://www.gmforum.com/t278820/

Also, please add your year and trim of your vehicle to your signature line. That way when you start asking questions in other areas of the forum, we all have a better idea on how to assist you. Click on "Quick Links" above, go down to "User Control Panel" and then click on "Edit your Signature" It'* pretty straight forward from there.

Thx Purp.

I have a 90 burb, and have pulled codes off that the same way. In fact, I've reprogrammed the ECU on that.

So, I guess I should have asked if leaving the ECU in this 1994 Bonnie 3800 overnight without power could trigger a code 18 or cable around the starter could get crushed, cut or pulled and cause a code 18.

Thanks again

Ok,

I rechecked the codes and with a little patience, code 43 popped up as well.

43 knock sensor
or electronic spark control circuit fault

Can anybody shed some light on what I need to do?

Thanks

All,

here'* a quick update. I disconnected the battery, and waited 30 seconds. fired her up. SES light gone.

Drove about 10 seconds and poped up again.

Now it'* only complaining about code 43.

WHere is the knock sesnsor on a 93 bonny Vin L?

Thanks

This thread might help you find them. There are two. One on each side of the motor. https://www.gmforum.com/t204257/

I was on the autozone site and there is a rough diagram but it showed the VIN L had one...

Thanks for the reply