GMPP E67 Stand Alone Questions

Got an S10 here with a LS3 and GMPP E67 stand alone. For some reason I'm having connection issues to ecm, I have to have the engine running and then press record or it won't poll any data. Once it starts recording it seems to be fairly stable for a few minutes and then fails out, quits reporting data and or closes the vcm scanner. Anyone have any similar experiences to share before I slice open the wiring harness!

Also is there a way to hook up the AEM wideband into this ecm to read into the scanner or is it easier to just pro link it ?

Did you repoll for supported parameters?

Yup repolled and hasn't made a difference, I'm going to get the wiring checked out.