Thanks Joe, however I did click the "Parameter" column heading until they were sorted in ascending alpha order for the first screen shot of the PIDs tab. Also, note that "Supported" check box is not checked/ticked, so that should give me all of the possible PIDs in the table (both supported and unsupported by my PCM/OS). Also, I did Validate PDIs several times when I was logging some data. I got anywhere from 55 to 65 PIDs as being available. It is my recollection that several years ago, I would get about 100 valid PIDs.
One of the things that I can't figure out is why the GM specific PIDs don't at least show up as being available but unsupported on the PIDs (F8) tab since these PIDs are clearly in the pids_info.txt file.
Steve