1995Scarab

2000 Tahoe Limited on which the "Security" light is constantly on and it will only run for a second when started. This truck was made in TX, LTD only, and does not appear to have any resistor on or in the key unlike the balance of trucks not manufactured in TX. The ten minute scenario has not impact nor does battery disconnection. I'm pretty sure this is kind of an odd ball but thought this to be the best place to check for information and hopefully someone may have some experience and didn't have to spend a ton of money to resolve the issue. Any help would be greatly appreciated and thanks in advance for your time and trouble!!
K