I tried to log the GM.EST pids for spark today. For some reason they show as not-supported on my 2006 2500hd. It has the 12587811 operating system. I can not swear to it, but I think they were there before. I have connected to the truck with the laptop and just the Flashscan to validate the pids. Both methods give me the same result. They produce 236 valid pids, but not the DMA pids. I have also tried entering the vin again. This did not work either. Does anybody have any ideas? I updated to the new software version this week. I am not sure that they have shown up since. Thanks for the help.