Bypass module for a ’99 Grand prix?

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=49194
Printed Date: May 10, 2025 at 10:03 AM

Topic: Bypass module for a ’99 Grand prix?

Posted By: rhalford15
Subject: Bypass module for a ’99 Grand prix?
Date Posted: February 02, 2005 at 10:57 AM

I am going to install a remote start in my '99 Grand prix. I want to maek sure that the 555L is what I need. I was also told that i could use a resistor. Does anyone know what resistor I would need? Thanks in advance for any help.

Rodney

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Replies:

Posted By: thepencil
Date Posted: February 02, 2005 at 11:10 AM

Passlock 2 is what is require for your car.

Use the bypass module instead. It's a lot less work than finding the right resistor.

Here is the diagram if you want to try it out.

1048.pdf

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Posted By: IXJ159
Date Posted: February 02, 2005 at 9:14 PM

99 GP, does not have passlock 2, PASSKEY 3, or TRANSPONDER is a better name, GM-TB4 is what u need, or u can use a unversal and put a key in the bypass, but that is shady and sometimes dont work. A 99 GRAND AM, has passlock 2

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