OK folks, my super duper scan tool OE-Level Coverage (Enhanced Interfaces) that pulls the curtain from the wizard arrives tomorrow. Looking for anyone that has used a similar tool(s) for hints of wisdom for what to look for.

RECAP

Everything tried with BOTH keys, new batteries in keys, tested AOK main battery, and with the siren connected and disconnected. I have NOT dug into the vacuum module in the trunk as the thing is always garaged, the car hadn't seen water in months, and I did not want to tear out trim panels until I knew it was required. All the locks work fine via key fob, panic alarm does NOT, no chirp on lock/unlock but lights do blink. IF that module is bad, I suspect I will see a code when my tool arrives (input welcome). There are NO codes posted on a basic OBDII reader and no check engine light.

I've followed the guidance in https://www.crossfireforum.org/forum...tml#post694205,
repaired this https://www.crossfireforum.org/forum...-no-start.html, and followed the power cycle steps in these -
https://www.crossfireforum.org/forum...r-driving.html,
https://www.crossfireforum.org/forum...tely-horn.html

I've PM'd CrossfireForum.org - View Profile: sccasrt6 to see if he had any of the diagnostic indicators that led him to replace the SKREEM

I've also been over to slkworld.com as they have many similar threads with similar scenarios. UNFORTUNATELY, the resolutions seem to never contain diagnostic information from the tools that can read all the information from the vehicle and may mean some expensive parts were needlessly replaced (or at least I hope that MAY be the case )

Are there any actual mechanics on this forum. On lxforums (for my Magnum), there are some that can help out with diagnostics.

Thanks again to all and I look forward to your suggestions AND providing a detailed report out of how this eventually gets resolved.