Question about 1999 Oldsmobile Alero

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Alero security can you tell me how to completely remove the pass lock security? Thanks

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  • ricaroo2 Oct 09, 2008

    I need to know how bypass and disable it.

  • dsrockbttm Nov 07, 2008

    I have a 00 Alero. Is it much of a problem going thru the steering column. This is just a pain in the ??? having to wait 10 mintues, and I notice that it only happens in the winter (cold), in the summer time, my security light stayed on, and always cranked up. Now that its cold now, it never wants to start. I really don't care about the security light staying on after the wire is cut.

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  • Master
  • 372 Answers

You can not remove the system. It is intergrated in to the powertrain control module, the body control module and the theft module. It as is tied in to you factory door locks. You can bypass it and disable it but you cant remove it without causing alot of problems

Posted on Oct 09, 2008

  • Ed Woods
    Ed Woods Oct 09, 2008

    Ok get acess to the wiring under the steering column. There is a group of 3 small wires in a small wire loom. They are black white and yellow. Start the car with the key and cut the yellow wire the theft lite will come on and stay on but the system will be disabled. If there is a small metal strip in the key its even easier so let me know.

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02 olds alero no start system shut down


Where did you try to by-pass at , with the 2000 ohm resistor ? Is the SECURITY light lit on the instrument cluster ? Probably has another problem other then the key . The anti-theft system in your vehicle can not be by-passed by using a resistor .

The Passlock™ System is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. If starting is attempted without authorization from the Passlock™ System, the powertrain control module (PCM) will disable engine starting. Start disable may be in the form of fuel disable or starter disable, depending on engine application.

Your best bet , take it to a qualified repair shop . Before you render it unfixable . (cost to much )

Jan 26, 2017 | 2002 Oldsmobile Alero

1 Answer

How do you put the resistor in the passlock system on a Oldsmobile Alero


You don't say if the security light is lit ? Is it ? If not , it's not a anti-theft system problem . An the passlock system on your vehicle the passlock sensor is part of the ignition lock cylinder . No resistor ! If the security light is lit you need to have it check for codes . There are a number of DTC'S that can set .
DTC B2947
DTC B2948
DTC B2957
DTC B2958
DTC B2960
DTC B3031
DTC B3033
DTC P1626
DTC P1630
DTC P1631
DTC P1632

The Passlock™ system is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. The body control module (BCM) provides security system sensor power and low reference for the Passlock™ sensor. The BCM also measures the security system sensor voltage.
When the correct key is used to start the vehicle, a magnet on the lock cylinder passes close to the Passlock™ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock™ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle. The BCM will measure the voltage on the security sensor signal circuit and compare this voltage to a previously learned voltage. If the voltage measured is within the valid range, the BCM will send a class 2 message to the powertrain control module (PCM) to enable vehicle starting. If the voltage measured is not within the valid range, a class 2 message will be sent to the PCM to disable starting of the vehicle.

Nov 04, 2016 | Oldsmobile Cars & Trucks

1 Answer

Could you please tell me what my four digit security code is for my central locking?


This is a very open question on an open web page.
If I could, then I could potentially be a prolific car thief.

It depends on which model you have..
Corsa b & c are very easy to obtain their security codes.

If it is an approx october-2004 onward vauxhall, then it should be the same code as the radio security code.
Before October 2004, the security code and audio codes are different.

The official answer should be.

Take your V5C document or sales receipt for the car to your Vauxhall dealer.

For the sum of thirty-odd pounds, and a wait of two or three days, you will be rewarded with a shiny new security pass.

If you are in a hurry, you can ask for the code, but advise that you don't want to wait for a pass to be printed.
Some dealers 'may' tell you the code there and then.
(Of course pending payment and ownership documentation checks).
But many will not give a code verbally.

Oct 03, 2015 | Vauxhall Cars & Trucks

2 Answers

How to determine the resistance needs to bypass the TDM and passlock on my 04 Chevy Impala


You can't
The Passlock?"¢ sensor contains 2 hall effect sensors. The tamper hall effect sensor is on the top. The security hall effect sensor is under the tamper hall effect sensor. Both of the hall effect sensors monitor the magnet of the lock cylinder through an opening. The tamper hall effect sensor is physically placed on top of the security hall effect sensor. This arrangement enables the tamper hall effect sensor to engage first if an intruder attempts to bypass the Passlock?"¢ sensor by placing a large magnet around that area of the steering column. There is a tamper resistor inside the Passlock?"¢ sensor in order to help prevent tamper to the system. Passlock?"¢ equipped vehicles have a selection of 10 different security resistors ranging from 0.5K ohms up to 13.6K ohms. Installing one of the security resistors inside the Passlock?"¢ sensor will generate a unique Passlock?"¢ code. All 10 combinations of the Passlock?"¢ sensor have the same part number.
Ignition lock cylinder has a connector with three wires marked A-B-C , A is a yellow wire - signal to the BCM .

Jun 01, 2015 | 2004 Chevrolet Impala

2 Answers

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/

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Apr 04, 2015 | 2000 Oldsmobile Alero

1 Answer

I just installed a new key switch in my 2006 trailblazer it is a napa part now when I start it it will only run for a few seconds and die ?


That is because of the vehicle theft deterrent system ! Do you have a security light lit on the instrument cluster ?
The Passlock?"¢ System is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. If starting is attempted without authorization from the Passlock?"¢ System, the powertrain control module (PCM) will disable engine starting. Start disable may be in the form of fuel disable or starter disable, depending on engine application.
The components of the Passlock?"¢ System are as follows:
?€¢
The ignition lock cylinder and key


?€¢
The ignition lock cylinder case, including the Passlock?"¢ sensor


?€¢
The ignition switch


?€¢
The body control module (BCM)


?€¢
The security indicator on the instrument cluster


?€¢
The powertrain control module (PCM)

Ignition Lock Cylinder Case, Including the Passlock?"¢ Sensor
The ignition lock cylinder fits inside the ignition lock cylinder case and operates the ignition switch when turned by a key with the proper mechanical cut. When the ignition key is used to turn the ignition lock cylinder to crank, start, a magnet on the lock cylinder passes close to the Passlock?"¢ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock?"¢ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle.
If a magnet from outside of the ignition lock cylinder case is used to attempt to steal the vehicle, the tamper hall effect sensor will be activated. This completes a circuit from the security sensor signal circuit through a tamper resistor to the security sensor low reference circuit bypassing the security resistor. If the ignition switch is forced to rotate without the correct key, or if the ignition lock cylinder is removed by force, the Passlock?"¢ sensor will be damaged and will not operate.

Feb 22, 2015 | 2006 Chevrolet Trailblazer

1 Answer

2002 Safari SLT, security system gone wild


Have the fault codes read. Have a load test done on the battery as all the faults could be low battery voltage or failing battery

May 18, 2013 | GMC Safari Cars & Trucks

1 Answer

Car wont start code reading is u1000 loss of serial communiocation class 2


most likely cause is the pass lock sensor is bad in the ignition switch. is the security light flashing also? if so then that is a good indication that the sensor will need replacing.

Jun 06, 2012 | 2001 Oldsmobile Alero

2 Answers

DOES THE PASS KEY II THEFT SYSTEM NEEDS TO BE DISENGAGED THROUGH THE RADIO THEFT 4 CODE SYSTEM TO RESTORE THE FUEL SYSTEM IN 1995 OLDSMOBIL88 LSS


The Passkey anti theft system and the radio theft deterrent system are completely separate systems, so the answer is no the radio code does nothing to the Passkey. Passkey is a passive system, that is to say it disarms itself and arms itself just by inserting or removing the key from the ignition and locking the door of the car either with the key or the remote. If the Passkey is the source of any problem and is not working correctly then the Security light should be flashing in the dash to indicate a problem. The most common issue with the Passkey 1 and 2 is that the reader located in the ignition switch lock cylinder goes bad, this locks out the fuel pump and the engine will not start. The system can be bypassed but it is not easy.

Oct 15, 2011 | 1995 Oldsmobile Eighty Eight

1 Answer

I have problem pass locked with my Oldsmobile for month


If your problem is the passlock security system. Look into this link. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 27, 2011 | 2003 Oldsmobile Alero

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