Question about Chevrolet 1500

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There was a problem in the column with the turn signal, so my husband took it apart and fixed that problem, but it tripped the anti theft security feature which turns off the gas. Now the truck won't start.

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He probably accidentally knocked off the transponder near the ignition cylinder its a small plastic piece have him go in and double check. If all looks connected disconnect battery for an hour reconnect and try to start.

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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Need to know where the tdm is on a 1997 Cadillac deville can't get security system to shut off should I replace ecm ? Please help


It's hard to get the SECURITY light to go off when you don't know how it works ! Replacing the PCM could cause you more problems too . If a replacement PCM is being installed it must be programmed (flashed) using the latest Techline programming procedures.
Having the vehicle check for DTC ' S - diagnostic trouble codes would be the first step.
DTC P1626 Theft Deterrent Fuel Enable Signal Lost
DTC P1630 Theft Deterrent Learn Mode Active
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
DTC P1632 Theft Deterrent Fuel Disable Signal Received

This anti-theft system does not use a TDM - theft deterrent module . The instrument cluster is the controlling module . Look at a wiring diagram here
http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model engine . Then under systems click on body & accessories , then in subsystem click on security / anti-theft . Click the search button , then on the blue link .You mite be able to do a by-pass if the contacts inside the key lock cylinder is the problem . You can check it with ohm meter . The key has a resistor pellet on the side , you can check the value with ohm meter , find the two wires under the dash at the steering column . Two white wires inside a yellow or orange sheathing . There are videos on youtube !

Apr 13, 2017 | Cadillac Cars & Trucks

1 Answer

Security fuse 1999 pontiac bonneville


Need a little more info . Security fuse ????? Do you mean anti-theft ? The SECURITY light is lit on the instrument cluster ? Content theft or vehicle theft ?
Vehicle Theft Deterrent (VTD) Description
Ignition Key
The ignition key for vehicles which are equipped with the PASS-Key® II system consists of the following components:
• A typical square ignition key blank
• A resistor pellet
The PASS-Key® II ignition key has the same mechanical key cuts as a non-PASS-Key® II ignition key. You can not service the key blank and resistor pellet separately. There are 15 different ignition key assemblies, each with a different key pellet resistance value.
When you service the PASS-Key® II system, obtain all ignition keys. Verify the proper key code values withJ 35628-A Interrogator.
Steering Column (Ignition) Lock Cylinder
The steering column (ignition) lock cylinder that is used with the PASS-Key® II system contains a set of electrical terminals. The terminals are used to contact the resistor in the ignition key.
The wire routing for the contacts inside the steering column is very critical. When you service the lock cylinder, maintain proper wire routing.
When you replace a steering column lock cylinder, make new keys. The new keys must match the following items:
• The PASS-Key® II code of the PASS-Key® II system
• The mechanical cut of the new steering column (ignition) lock cylinder.


Measure the resistance of the pellet on the key , go to radio shack an buy a resistor of same value an solder into wiring harness .

pulling fuse won't work , power's the PCM as well . Plus software in the PCM won't let it start if it doesn't see input signal from the Theft deterrent module .Take an get it fix right .

Feb 23, 2017 | Pontiac Cars & Trucks

3 Answers

How do I fix the security system? the security light comes on and it wont crank. Does it reset itself?


sounds like gem module I had a 2001 did the same took batt cable off for 10 min and put back on and it worked for awhile it's the anti theft module a dealer can remove in for $ 150 hope that helps hope that helps

Nov 21, 2015 | 1995 Chevrolet Camaro

1 Answer

I have a saturn 2002 L200 the security light keeps tripping as i turn it on and . wont start keeps draining battery. how can i fix this


there are several TSB's pertaining to the anti-theft system. the best option is to see what part of the anti-theft system is not working. There should be codes in the theft module. you will need a high end scan tool to get these. anything less than $1,500 will not get these codes. You will likely have to get a GM dealer or a good independent shop to help you with this. Once the problem is resolved the anti theft can be relearned if necessary and you should be fine until the next thing goes wrong...

Aug 15, 2015 | Saturn SL Cars & Trucks

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How to reset anti-theft on a 2000 alero


The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://www.diy-gm-security.com/

25627937-vycpj41x2iphfdmbx4v0vfed-3-0.jpg

Apr 04, 2015 | 2000 Oldsmobile Alero

1 Answer

Disarm anti theft system


The security light is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterperates this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jul 27, 2013 | Buick Reatta Cars & Trucks

1 Answer

1991 buick park avenue


Anti-theft system problem . Do you have a SECURITY light on the instrument cluster that is on or flashing when trying to start the vehicle ? Is there a resistor pellet on the key ? The problem with these anti-theft systems is the contacts inside the ignition lock cylinder wear an can't read the resistance of the resistor pellet on the side of the key . You can find videos on youtube on by-pass this part of it . It's called VATS - vehicle anti-theft system . To do this by-pass measure the resistor value with a ohm meter . Buy resistors at radio shack to equal that an then find the wires under the dash on or around the steering column an solder the resistors to the wires . Check out a few different videos on youtube .

Apr 09, 2017 | Buick Park Avenue Cars & Trucks

1 Answer

My steering wheel has locked and my key won't turn in the column, and of course, I cannot go anywhere. Hopefully you have a suggestion for a single woman of 55 years old that I can do myself. I am...


no there is no cheap nor easy fix, the steering column will have to come apart and the anti-theft contraption attached to the ignition switch which holds the steering column fixed will have to be replaced. there is a nice video of a fellow doing this over on youtube.com, good luck finding the parts.

Aug 16, 2011 | 1996 Saturn SW

1 Answer

I have a 1999 chevy lumina which i am trying to replace the steering column in. i have replaced the steering column but the security light is coming on and the car won't turn over now. I took the old...


Read up on this link. http://vatspasslockpasskeysecurityhelp.yolasite.com/ But replacing steering column, you have probably swapped out the ignition that is part of the cars anti theft system. The passlock has immobilized the starter. Read that link all the way thru. Way too much to type. Tons of info and DO IT YOURSELF solutions to fix the security too.tayjoejoe_4.jpg

Jun 20, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

COLUMN REPLACEMENT


Did he use the correct steering column, one with factory anti-theft key? if so then the system has to be relearned for the key on the new column, does the security light flash when you try to start it?

Nov 14, 2008 | 1999 Chevrolet Monte Carlo

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