Duramax Imperial selection

I can't choose any of the normal PID's from the Duramax Imperial file, they have a red X through them and says invalid PIDs when I try to log my truck??? What am I doing wrong? Seems it was ok until I updated EFI?

JD,

Try doing this:
- File->Enter VIN, and enter your VIN and OS,
- File->Select Controller, and select LB7 Duramax Diesel ECM (is this what you have?),
- Uncheck Supported on the PIDs tab,
- Connect to vehicle, and then do Info->Validate Pids,
- Ignore the red X and try to log, the red X will disappear.

Thanks! I'll try it out today.

Worked, Thank you.