I'm a new member, joined today. Looks like a great forum for Blazer enthusiasts. I have a current pressing problem. It is engine code 12. It came on today, never a code before in the 4 years I have owned this "W" engine Blazer.

The code is "No Reference Pulses to the ECM". Not sure what that means, I was able to clear the code via battery disconnection. It didn't return. Anybody know what causes it, how to correct it, and if it is something I should try to resolve.

Thanks in advance,

Bill