need help with Passlock key II
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=50010
Printed Date: July 14, 2025 at 12:05 PM
Topic: need help with Passlock key II
Posted By: Sprayed
Subject: need help with Passlock key II
Date Posted: February 13, 2005 at 12:06 PM
I am having trouble finding the 'yellow wire' for the Passlock 2....on my '01 tahoe....anybody have this particular wiring diagram??...there are 3 or 4 yellow wires in the BCM ...I dont wanna start cutting...and Im not exactly sure how to measure the resistance with the volt meter for this wire....any help would be apprecitated!!
Replies:
Posted By: auex
Date Posted: February 13, 2005 at 12:23 PM
don't go to the bcm, get it in the column
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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: Sprayed
Date Posted: February 13, 2005 at 12:29 PM
K...what exactly does it look like...is it by the ign switch???...and isthere only one yellow wire up there??..~~> new to this passlock key thing
Posted By: auex
Date Posted: February 13, 2005 at 12:41 PM
It comes from the ign cylinder. It should be close to the ign harness, if not in.
-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: clank
Date Posted: February 13, 2005 at 6:13 PM
take apart the steering column shroud. you can trace the wires you need off of the key cylander. it is most likely ORANGE / black and black
Posted By: eastwoodblack
Date Posted: February 14, 2005 at 10:29 AM
to measure the resistance for the passlock, you will need to trace and find the yellow wire and the BLACK/ orange black, cut the yellow wire and strip back the BLACK/ orange black wire. Put the negative connection on the dmm to the black wire and the other connection to the ignition side of the yellow wire, turn the iginition to the run position and record that value, then turn the run position and record that value, it should be half of the first recorded value and that will be your target...
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