Thread: DTC codes won't disable

Originally Posted by Scottydoggs

ok just looked at a bin, the bottom file is a zero, the top file is a 3 or "no report" fault type is the top one, and a 3, fault enable is the bottom folder its a 0.

you need to delete the codes in both files in the diagnostic folder.

That's exactly how mine is set.

I do have 2 extra 1998 PCM's I can try.

What is the newest OSID for a 1998 Grand Prix ? I'm using 16266449 as I had read that higher numbers were the newest. I think my other choice was 9352809.