2003 Tahoe Factory Disarm Wire

the best place to tap this wire is at the BCM located directly under the steering column. and yes it is green and it does have to sense a negative trigger in order to disarm the OEM security system.Ruben Giraldo

Atlanta GA.

Test twice, tap once!

Always double check your wires, and not only rely on what the schematics say.

 this is a link to a wiring diagram for a 2003 avalanche or suburban and probably very similar to yukon and tahoe.

http://www.chevyavalanchefanclub.com/attachments/2003alarmwiring.zip

All these people posting info relating to a 2002 or earlier Tahoe is pointless. In 2003 the wiring changed dramatically and the locks/alarm is now controlled thru the databus. You will not find a lt. green disarm wire at the BCM anymore. You also won't find the door triggers for the front doors at the BCM. Only the door triggers for the rear doors are at the BCM. CHEVROLET, TAHOE, 2003, Door Trigger The driver door trigger is gray/black at the driver door module in the door. The RF door trigger is BLACK/ white at the passenger door module in the door. The LR door trigger is lt. blue/black, pin A3, and the RR is lt. GREEN/ black, pin A2, they are in the purple plug at the BCM. Use all four wires and diode isolate each. The BCM (Body Control Module) is under the driver side dash. It has 6 plugs in it, the purple plug is on the back. Make your life easier and get a doorlock module. The 456G from DEI works good.