my 2000 s10 goes into security shutdown every now and then. i have a remote starter form icd and the DEI555L module installed.
this is what happens, if i never lock the doors it never goes into security shutdown.

if i use the remote start it never goes into security shutdown.

but if i use the driver door lock button and then the driver door ign key to unlock the driver door and then get in and try to start it with the key it will sometimes go into the security shutdown.

i can't replicated this on a normal fail, so i do not know for sure what is causing this. last night i messed around with the door pin i held that pushed in and locked the door and had the door open and when i let the pin out the horn honked but shut off when i turned on the key.

there has to be something going on with the door lock button or the door key or the locking unit on the door because if i had the door open and latched that lock unit it turned on the security light.

what i want to do is bypass that so nothing on the door is connected to the security system to cause a shutdown. it seems the s10 forum guys are stuck on the remote starter but i took the lower dash panel off and i messed with the DEI555L module and if i unplug it no start if i take the fuse out no start i have the wires correct or it would not start. i guess it can be failing but like i said if i never lock the door i never have issues if i use the remote start i never have issues i only have issues when use the door lock button and the door key to get back in. i'm tempted to take the wires off the door pin but then i lose the dome lights.

it seems i have the passlock 2 system this is the link to the unit i have it wired per page 3 and 4
https://www.the12volt.com/installbay...555L_7-02B.pdf

so if i ahve some issues going on in the door and i can bypass that i will and let the truck think i never locked it.

I just want to make sure I understand: Your 2000 *-10 has the factory Passkey system, and you want it gone, right?

well i want it either gone or find out how the armrest door lock button and the door key play a role in the security system causing this.

like i said i have a remote start system i installed back in 2005 and it has that module in it to sense the passkey and bypass that for starting the truck with that remote. that module is the DEI555L passkey module.

i never ever had a no start using the remote start fob
i never ever had a no start if i did not lock the doors

i have a intermittent no start when i lock the doors using the arm rest door lock button and then close the door and walk away and it may fail any time after that when i come back and use the key to unlock the door and then get it and close the door and try to start it. every now an then i get a lockout

the s10 guys are fixed on the remote start system but that does not activate that DEI555L module unless the remote has been activated. i went thru that when i first installed the starter. and it has and still does work flawlessly.

the issue has to be with the door, either the arm rest button or the key door lock. so i always use the arm rest door lock button and then the key to get back in so to test today i closed the door and used the key to lock the door and later today or tomorrow i will go and use the key to unlock the door and get in and close the door and see if it starts.

unless there is a way to just remove the passlock system either by taking out the module ot finding a programmer to bypass it. because i do not drive the truck much it take time to test different ways to see what way is causing the issues. until a few years ago i never locked the truck at work but then i guess i got in the habit after i retired because in our area now we have people going thru cars to steal whatever they can find. i do not leave much but the few non re sellable items i do leave there i do not need taken and then have to make them and put them back.

The 555l seems to be doing what it is programed for, sounds like the ignition switch might be going out and the resistance is changing when the key is turned to start. The security light on the dash is the factory alarm that monitors the doors only. With the door open you hit lock switch and close door the security light will stay solid for 30sec then off, factory alarm is set. The remote start should disarm the alarm during remote start activation and trigger the 555l to integrate the passlock security. Being that is a 05 possible some switches and sensors are worn, like the door pin that turns on the dome light, door lock if manually unlocking door to disarm alarm, and ignition cylinder that has the resistance for the passlock security. Possible remote start feature could be the starter kill/ anti grind but that only cuts out the starter power but will not trip the security light. I would look into the ignition switch or just permanent bypass the passlock feature if you don't want to spend money on the ignition switch because a new switch will have a different resistance for passlock and the 555l will need to be reprogrammed.

ok but can you explain why this only happens if i use the arm rest door lock and the at anytime later use the door key to open the door and the the key to start the truck. by the way it is a 2000.

that dei555L module is suppose to do the same as the resistor but it only engages if the remote starter is used.. but if you believe i would do better to just install the resistor also and then i can do that i have one in the mail now. so tell me if i install the resistor can i install that and leave the DEI555L installed for the times i need to use the remote start system?

i know this issue is from the door manual door locking as if i never lock the door i do not ever have the issue. and if i lock the door with the remote starter fob i do not have the issue.

i'm agreeing that something is failing in the door i do not think it is the dome light switch or i would see this happen with out locking it or even possible with the remote starter.
thanks

If you bypass the passlock the 555L will not be needed anymore as you would just cut out the 555l while installing the resistor. Do you know how to get into the door panel and test the disarm wire and possibly clean up the connection for it to work while turning the key in the door. The wire is a Lt. Green coming from the key cylinder in the door, to test, the wire will go ground when turning to unlock. removing the key cylinder from the door is not bad of a job. Also another common issue I have experienced is the wires break in the door boot. possibly the disarm wire is broken there. I would check the door boot first for broken wires before removing door panel.

ak. yes i do and i kind of think the same i have repaired lost of door boot failures before and that is possible. for now i will install that resistor and that should eliminate the module and also the door lock failures correct !