Ok heres the deal guys, I had this problem about a yr ago, and the guy showed me how to fix it but I forgot.
On the driver side, under the dash bottom corner is a assload of wires, and this is where he showed me how to fix it.

ANYWAYS, whenver ALL doors are shut a secure, it says a door is open, yet I am 110% sure the doors are closed, so what wires down there read the doors? Any help would be great.

The red/white wire down in the kick panel that gives +12volts when the doors are closed and ground when they're opened is the door trigger wire. Maybe it's getting grounded somehow.