So i have a 99 GMC , 5.3, P01 ECU
I have been tinkering around a bit getting my feet wet with this platform learning the ins and outs before i decide to bolt up a Kung Pow Cam Crusher and send parts into orbit.. ... anyways, When i click on the OS icon i have ZERO other options. i thought maybe it was because i have done some editing so far so went back and looked at my stock tune file still nothing. Thinking maybe something is goofy with my ECU i read the stock files from 2 of my buddies pickups and neither one of them show and other OS options either, just blank screens when i click on the OS icon. Any advice much appreciated.