99 monte carlo passlock ii problem
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=114770
Printed Date: May 11, 2025 at 8:38 PM
Topic: 99 monte carlo passlock ii problem
Posted By: wa9ave
Subject: 99 monte carlo passlock ii problem
Date Posted: June 30, 2009 at 6:45 AM
Hi all,
My daughter's car decided it didn't want to start yesterday. I know it is because of the anti-theft (PASSLOCK II) system. I am just curious about the wire colors - are they always Yellow & Black?
Also, in searching for answers in the forums, I read that temperature can effect the resistance, which I already know because I work with electronics all the time, but is it enough to wreak havoc on the system as far as working in summer but not in winter???
I have read that alot of people have had very good success in just using a resistor. I put one in another car a few years ago and it worked but I don't remember what kind of car it was.
Thanks,
Kevin
Replies:
Posted By: Chris Luongo
Date Posted: July 01, 2009 at 11:44 AM
Definitely a '99, right?
The Monte Carlo didn't get Passlock II until the 2000 model year.
The '99 has GM's first-generation anti-theft system, dating back to the 1986 Corvette and 1988 Camaro/Firebird.
It's called VATS (Vehicle Anti Theft System), but it was occasionally referred to as Pass Key II on window stickers and sales literature.
Anyway, as long as it's a '99, Google the words "vats bypass" (without the quotation marks).....the first and third links that show up have good information.
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