Anti-theft engaged and car won't crank
Hello, I’m throwing up a hail-mary before I have my Solstice towed to the dealer. I have an automatic 2007 2.4 model with the Monsoon sound system. On Saturday I pulled out my working aftermarket head unit to connect a backup camera. When I turned on the ignition to check the camera operation there was a steady anti-theft lock light on the instrument cluster (car with padlock symbol), the car will not crank, the radio will not power up, and both key fobs stopped working. Everything else electrical still works. I have run through nearly every diagnostic/fix I could find on the internet and on this site, reinstalled the factory head unit and replaced the battery, none of which has solved the no start issue. I’m hoping someone out there has experienced this and knows the fix. One other note the anti-theft light is not flashing and never goes off regardless of how long the key is in the on position. Any thoughts are appreciated.
Also, I'm new at this, and I'm pretty sure I've been through all of the applicable posts, but please feel free to direct me to any that I may have missed.