Driver door will not lock or unlock, no courtesy lights

[Phutson]

I have a 2010 silverado 2500hd. I am having an issue with
the driver door lock, all the other doors lock and unlock just
fine. I found a broken wire in the rubber boot between the
door and the cab and fix it accordingly. I looked up what
fuses if would be and i replaced those, all was well for
about a week then I pulled the panel off and put new
speakers in and tightened the metal plate behind the door
panel. Then it just stopped again. So I pulled the door panel
off again and found the wire i had previously fixed was
broken again so I pulled the entire harness and soldered
the wire. Put everything back together with no luck. Now,
the BCM doesnt even recognize the door being open or
closed (courtesy lights no longer come on when I open the
door.) I bought a new actuator thinking that was the issue
plugged it up to test before removing the old one, still no
luck. I used a DMM to test for voltage at the connector to
the actuator and the connector that goes to the switch. I
have a constant 11.4 volts at the switch and at the actuator
connector. However, when I push the lock button, the
voltage drops anywhere from 1volt to a 11volts. When
press the unlock switch the voltage drops maybe a half
volt. I was told that the switch is grounding out some
where, but i have no idea where that would be, all the wires
in the harness appear to be in good condition, I tested the
ohms in the harness and everything checks out, no broken
wires. I was thinking that maybe the relays in the I/P
junction box are going bad, but i really dont know. I can lock
and unlock all the doors from the driver switch except the
driver door. Doesnt work with the remote either. Does
anyone know where or what else I should check? Anyone
else ever have this issue, if so, how did you resolve it? Any
input or insight is greatly appreciated! Thanks.