2001 Concorde with SKIM and aftermarket alarm

Hello,

I’m troubleshooting a no start with key condition on this car. The car will crank and start but then shut down within a few seconds. By my understanding this means a SKIM problem as my reading has indicated that this is the outcome when things aren’t seen as all good. The car also has what seems to be a professionally installed alarm/remote start system which is the only fob I have for the car. I can remote start the car with the remote and it will stay running even after inserting/turning the key and taking off but my understanding is also that SKIM is being bypassed somehow for this remote start to be possible, correct?

The theory I have right now is the only reason I can start the car at all is because of the alarm system bypass and that if I removed it I may be left with no means to start it period besides addressing whatever is busted with SKIM unless it’s the alarm interfering with its operation otherwise. I dunno, my brain is cooked on this one. What would you recommend? Thanks in advance