rearming factory alarm

I have a 2002 Avalanche with factory alarm and viper 169xv remote start system. The problem I have is that the factory alarm will only arm if a door (any door) is open while either pressing lock on the FOB or by pressing the lock button on the door. When the door is open the security telltale light is lite and blinking. When I press lock it turns solid and arms after I close the door and the courtesy light goes out. But with the door closed the telltale security light never comes on and the alarm will not arm. I have tried changing the lock pulses from the 160xv from 1 to 2 and vice versa with no luck. Is there a factory rearm wire that I could possibly connect to my remote start? Maybe then it will arm with the door closed. Its almost like a ground is missing until the door is opened.

Thanks in advance.

When was the 160XV installed? Was the factory alarm working before the installation? Who installed the 160VX?

Viper remotes. All that came with the truck.

Thats exactly right. With the factory rearm wire.  I took 2 relays and simulated the locking proccess. I also took a couple diodes and isolated the ground I was using for the lock and used that wire to simulate the door being open and it works fine. Now the only time the system is not armed is when the remote start has it running. However when it times out or I shut it off it then also rearms the alarm.

Thanks for your help.