hanomon Posted July 13, 2005 Share Posted July 13, 2005 Got my PCM back from being reprogramed, set-up the tunercat program established com-link (no problem) click on toolbar, select "Read PCM" from the menu options (that was the only option available/highlited) It began the process with the warning Not to interupt the program, after approx 30-45 sec. pause, the Red circle w/white "X" and the "Can not read PCM" So, is my gut correct in assuming that I may have purchased a defective unit to begin with? Dose anyone out there know of a way to test the health of the PCM before I cough-up $117. for the new unit? GM part No.16181333 Quote Link to comment Share on other sites More sharing options...
Tim240z Posted July 13, 2005 Share Posted July 13, 2005 Make sure that you have the "ignition on" sequence correct. Turn the ignition on (listen for the fuel pump to quit priming), then start the read procedure.... but....it certainly sounds like a hosed PCM.... Quote Link to comment Share on other sites More sharing options...
hanomon Posted July 13, 2005 Author Share Posted July 13, 2005 Yes, the ignition switch was in fact on, fuel pump kicked on for prime then off a few seconds later then I selected the "Read PCM" from the tool-bar. Quote Link to comment Share on other sites More sharing options...
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