1999 Grand AM Passlock 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=28660
Printed Date: May 09, 2025 at 11:46 PM

Topic: 1999 Grand AM Passlock II

Posted By: mbiker1
Subject: 1999 Grand AM Passlock II
Date Posted: March 19, 2004 at 11:51 AM

How do you bypass the GM's Passlock II Anti-Theft System. Is there a way by making a jumper or do i have to buy a module for it?

Replies:

Posted By: draasch
Date Posted: March 19, 2004 at 2:43 PM

you will need a passII or a DB-PLDATA

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Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt

Posted By: kgerry
Date Posted: March 19, 2004 at 4:18 PM

or a 555L from DEI

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: golfnut64
Date Posted: March 20, 2004 at 8:29 AM

HI You can also make a bypass with a resister of the correct value placed between the engine side of the yellow wire & the ORANGE / black passlock wires, if you want i can send a diagram if i get an e mail adderess ,or you can go to design tech web site

Posted By: Velocity Motors
Date Posted: March 20, 2004 at 9:18 AM

https://www.velocitymotorsport.com/install_notes/Chevy.htm

Go to the bottom of the first column for the bypass relay diagram & instructions.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

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