Question about 1999 Oldsmobile Alero

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Security light in 99 Oldsmobile Alero

I read in another post that you could advise how to bypass the security feature in the 99 Oldsmobile Alero and was wondering if you could tell me how it's done. My mom's Alero has issues with the security light flashing and then the car won't start. She waits the 10 minutes and then it may start or she may have to continue waiting 10 minutes again, and again. We would like to bypass the system but don't even see a fuse that we can pull. Please help!

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  • mstgrl2000 Sep 16, 2008

    Worked great and solved the problem! Thanks!!!

  • Anonymous Dec 16, 2008

    I have the same problem, and will try your solution...thanks for posting!

  • Anonymous Jan 12, 2009

    I have the same problem

  • Sphinxess Mar 10, 2009

    I have the same problem and I want to try the solution provided simply because I was quoted $350 to fix just the "part" or whatever was needed without installation. So my question is...What's the worst case scenario for cutting these wires? Say I cut them and they don't work, am I still looking at $350 to fix it or are we talking about having to replace other parts as well then?


  • Anonymous Mar 16, 2009

    i have the same problem on a 2003 alero. Can either bypass or get a new sensor for about 150 bucks

  • alero1999 Mar 16, 2009

    same problem with the 99 alero security light.

  • Anonymous Apr 26, 2009

    2002 alero

  • Anonymous Mar 14, 2014

    once battery is connected horn and side markers go off, i pulled the fuse for the horn but the lights still flash

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5 Answers

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  • 372 Answers

There isnt a fuse for the theft system. You need to take the coloum cover off. Should be 3 screws and you will see all the wires in there. The ones you need are three togather. White Black and Yellow. Get the car started and cut the yellow wire. The theft light will come on and stay on but will bypass the theft system. If it is a 2 wire system you will see two little metal strips on the upper side of the key. You have to use a ohm meter and measure the resistance of the strip in there. Its a resistor used to tell the theft computer the key is in there. Anyway find out what the resistance is and buy a resistor from radio shack and look under the steering wheel for the 2 very small guage wires in a yellow cover....NOTE not the air bag wires. Simply cut those wires ( the 2 white ones) and on the set going away from the steering wheel strip the wires and put the resistor one one wire and the other end of it to the other wire....That will disable that system. If its the 2 wire and you have issues getting it simply take the car to a car audio place that does remote starts and for a nominal fee they will do it for you. My records show that it has the 3 wire system.

Posted on Sep 16, 2008

  • Mrcoffee007 Feb 14, 2011

    I have a 1999 olds olera and I follow the instruction I found on a differt site. I have a in dash ignition , all I had to do was take the collar off from the dad where the speed-o is. 2 screws and pulled it out to show the ignition. Look on the left side and you will see the black , yellow and white wires. Not the ones on the back. They will be THIN wires. Start the car and cut the yellow. I let it run for a little bit and the turned it off and taped the longer wire and put ever thing back to gather. It was SOOOO easy. This rocks

  • mine2luv
    mine2luv May 11, 2012

    would it be possible at all for you to give more detail on how you fixed the security problem? i have a 99 olds alero..security light goes on.yes waiting exactly 10 min works but is not acceptable..miles dial turns to km..windows go slow,service engine and change oil light go on when ever...otherwise the car runs great with very good overdrive...i do need details on how to fix the security problem...thank you li

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  • 17 Answers

I own a 1999 Alero and unfortunately, this happens to me. I read in another post that you should turn your key to ACC, wait for the security light to stop flashing or go out, then turn the ignition off, then back on again to restart.I tried this just a couple of minutes ago and low and behold, it worked! Still, it 's a pain in the wazoo!

Posted on Mar 30, 2009

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I cannot believe it! I did what they said on solution #3. Turned the key to ACC It took about 1 to 2 minutes before the security light stopped flashing. Turned the ignititon off and then it started back up on the first try. Excellent!

Posted on Mar 10, 2010

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Wiggle wires under driver side seat did this yesterday cause I got stranded worked great! hasn't flashed yet.

Posted on Mar 03, 2010

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So I have a 99 alero. Same problems as everyone else. So far i have replaced the BCM, replaced the ignition lock cylinder and passlock sensor, and have done the bypass. the car is still doing the same old thing. Cranks then cuts back off after a few seconds. With each replacement i did the 30 minute relearn process, yet the problems still exist. ANY OTHER SUGGESTIONS?

Posted on Oct 24, 2012

  • zackcchs
    zackcchs Oct 24, 2012

    So I have a 99 alero. Same problems as everyone else. So far i have replaced the BCM, replaced the ignition lock cylinder and passlock sensor, and have done the bypass. the car is still doing the same old thing. Cranks then cuts back off after a few seconds. With each replacement i did the 30 minute relearn process, yet the problems still exist. ANY OTHER SUGGESTIONS?

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2 Answers

How to bypass a 2001 oldsmobile alero security so it will start


As indicated above, it's not a recommended solution since it eliminates the security feature all together. There is a procedure in your Owner's Manual how to reset the security module by allowing the car to sit idle for ten (10) minutes with the ignition key turned to the RUN position. The security image in the dash will simply go out after the 10 minutes, and you should be able to start your car. Only problem here is that the security lock may come back on again in several days to two weeks (and you will need to repeat the process again, and again.). There is also a YouTube video which shows a person altering the wiring harness that controls the security module by cutting a wire, stripping the insulation off a second wire and connecting the two (2) wires by inserting a resistor (certain size specified in the video that can be obtained from Radio Shack). You will need to use a small soldering iron and it takes about 15-20 minutes once you remove the radio to access the three (3) wire harness. Looks simple if you know what your doing, and is suppose to bypass the security feature permanently. Costs less than $5 for the needed parts (resistor, solder, electrical tape, etc.).

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99 old alero, trying to bypass security, following directions from this website, but car will not crank long enough to cut wires while running? is there a solution without car running first?


if your security light is on try turning the ignition to on position and leave it for 20 minutes and then turn the ignition off and then light should go out and then it should start good luck

May 29, 2014 | 1999 Oldsmobile Alero

2 Answers

Security light is flashing. car will not start on my 2003 oldsmobile alero


I OWN a 2001 Olds Alero and the same thing happens to mine.. It's an easy fix..
1. Turn the Key to ACC (keep it in this mode for the entire 10 minutes).
2. The security light on the Dashboard will flash for exactly 10 minutes..
3. Once the 10 mins are over, the security light will stay solid..
Wait for the red light to disappear off the dashboard...
YOU ARE NOW READY TO TURN YOUR CAR OFF AND RESTART YOU CAR....

SIMPLE FIX..
I DO THIS ALL THE TIME TO MINE..

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1 Answer

When you try to start my 99 Alero the security light starts blinking and it will not start. The light blinks for about ten to twelve minutes before going off.


The Problem is your VATS security system. I just fixed this in my 96 regal 3 days ago. You can go the cheap way, and bypass the key. (link #1) or spend 200 bucks and rip that whole garbage system out of your car. (link 2) I bypassed my key, worked for about a year till the computer part started failing. then i just did a full rip out.


http://vats.likeabigdog.com/

http://newrockies.ca?ap_id=judd0081

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1 Answer

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Hey jonce17....I had the same problem, and my Alero sat in my driveway for 2 days. I looked online for the solution, and I found out how to bypass the security. After it won't start and the security light is blinking, turn the ignition to the on position. Leave it there till the security light stops blinking and stays on (usually takes 9 to 10 minutes). Then turn ignition to off position and start it like normal. This happens to me about once every couple of months. Hope this helps....

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I would like to know if you can bypass the security passlock on a 2003 Alero and could you use a Toggle switch and how do you install it

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Is your security light flashing when it does this? If so, it is going into anti theft mode. Do you have the correct key for the car? Not an aftermarket one either.

Mar 07, 2009 | 1999 Oldsmobile Alero

1 Answer

Security Light


First, try checking the switch in the door because you could have a crossed wire. you will have to pull out the button and check the wires on all doors and trunk/boot. In the meantime, I will try to find an answer to your question.

Nov 06, 2008 | 1999 Oldsmobile Alero

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