thought I had fixed my problem. Scanmaster was not working. Was installed accordingly to the instructions. I verified power and continuity at the Orange wire from battery to ecm. The the Orange wire from fuse block to ecm. All checked good. So I purchased another ecm. Scanmaster worked like a charm. Then two hours later it stopped working again. Could it be a bad chip(stock) or ecm ( cardoons re manufactured )? I pull like to get this figured out so I can post my readings and get help from there. Thanks in advance guys!!