2003 trailblazer door unlock problem

There seems to be an 8-10 second window of time after disarming the system that the vehicle will not accept the signal. The vehicle even tries to lock the doors again after 8-10 seconds have elapsed since disarming the system.

Here are some details:

With Lock/Unlock wires connected from Valet to XK01

When Locking/Arming system

All Doors Lock

Interior lights turn on for 16 seconds or so

Security Light on Dash turns on for 30 seconds or so

Parking Lights flash once

Windows roll up sometimes. Usually the front 2 windows roll up together, then the driver side rear, then passenger side rear.

Status LED starts flashing

When Unlocking/Disarming

Doors DON'T unlock. The vehicle tries to lock doors 10 seconds after Disarming even though there still locked. The dashboard security light comes on simultaneously when the vehicle tries to lock the doors.

Interior lights come on immediately when disarming

Parking lights flash twice

Status LED stops flashing

With XK01 Unlock wire (Green) disconnected

The doors will still not unlock if I manually ground the Green wire within 8-10 seconds after disarming the system. The vehicle tries to lock the doors after 8-10 seconds even though there still locked.

The doors will unlock if I ground the green wire AFTER the vehicle tries to lock the doors, which is 8-10 seconds after disarming the system

The doors will unlock if I ground the green wire while the system is armed also. Actually, 1 tap to ground unlocks driver door and 2 taps unlocks all doors.

I hope this is enough detail. I really appreciate the help.

Mike

Yes, I checked to make sure it's in MODE1.  How do I know if the XK01 has the AMDL firmware loaded?

Thanks for the reply.