ACS emailed back with their findings:
"We received your unit and it is blown again.
There is a short in (vehicle) that is causing "Wait to Start" flashing. Possible causes; short in PIN 37, wrong programming or low voltage upon crank. Repairs are not covered under Warranty.
We will again provide the following repairs for a discounted rate of $75.00 + shipping; new Flash Chip, replace App and Lift Pump Circuit, reflow CPU and Processor and flash with latest updates. If you repair or replace this unit and have the same issues, it will not be covered under warranty.
If you decide not to have repairs done from ACS, we will give you a discounted Test fee of $35 + Shipping.
Please advise as to next steps.
Does this seem possible? I'm still running on the spare ECM. Regardless I'm going to have my ECM fixed again.