Update for anyone following:
I sent the ECU-GN to Eric after figuring out there was an issue with the Spark A output to coil #6. It was internally shorted somehow. He repaired it, looked over a few items in the tune, updated the firmware and shipped it back very quickly. I cannot thank Eric and Bob enough for the help on this issue. I hope everyone realizes what an asset to the Buick community these guys are. I started with Buicks back in the Direct Scan and Turbolink days where you had to send the chip in for a return that was really just a guess.
I plugged the newly repaired ECU and the car fired right up!!
Thanks again for the help!!!!