Question about 1999 Oldsmobile Alero

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Security Light Could you explain how to bypass the security anti-theft on my 99 Alero? I recently Replaced the heads and the 10 minute thing is having to take place on every cold start. Thank You.

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  • 17 Answers

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.

Posted on Nov 25, 2008

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Need to find out how-to reset security system on 99' Pontiac S S E turbocharged


Is the security light lit on the dash ? Turn the key to the run position , not start ! Leave the key on till the security light goes out ,about 10 minutes , then turn the key off an wait a couple minutes . Then start the vehicle . If it doesn't work you'll need to take it to a repair shop ,have codes read an go from there ! Or you can bypass the system , that involves find the right wires an soldering in a resistor of the proper resistance . You can google how to do a bypass on GM anti-theft system .

Aug 14, 2015 | Pontiac Cars & Trucks

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

99 tahoe security


THE KEY IS NOT THE CORRECT CODE SO THE ECM THINK ITS GETTING STOLEN. WORK ON INSTALLING THE FACTORY KEY AND TUMBLER THAT'S THE SIMPLE WAY OR CALL MY LOCK SMITH 602 579 6947 TELL HIM WHAT HAPPEN HE HAS EXTRA SOLUTIONS .

Feb 13, 2013 | 1999 Chevrolet Tahoe

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..

Nov 06, 2012 | 2003 Oldsmobile Alero

1 Answer

I've having the same problem on my 2000 alero but my security light isn't flashing on and off. Its just stayin on. Any suggestions?


The problem might be your Vats security system. This causes the car to either "not start" or "shut down" while running, or start for 5 seconds and then die. (depending on the system) If the security light flashes, i guarantee that this is what the problem is. 1st trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shuting down while running, im sorry i have no quick fix...

Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
----- http://vats.likeabigdog.com/


Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. For a list of cars effected by this problem. See the NEWROCKIES link on the right side of their page......... They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks.
----- http://newrockies.ca?ap_id=judd0081
----- With this fix, you can take that whole Vats, passlock, passkey **** system out of your car all together. Good info on both sites

Jan 17, 2011 | 2000 Oldsmobile Alero

3 Answers

Ignition keeps going into security car starts then stalls and security idiot light flashes


ignition switch problems on these cars are notorious, you can bypass the anti-theft module by placing a resistor inline so that the module 'thinks' the correct key is not an attempt to steal the car. the anti theft is located behind the glovebox and the resistor costs 15 cents at radio shack, not as hard to do as it sounds and it fixes it for good.

Dec 23, 2010 | 1997 Oldsmobile Achieva

1 Answer

I am having the same issue with my anti-theft device in my 2003 Alero. Last year it stopped running and would not turn-over. $400 later, Brakemax said they just had to reset the anti-theft device. oK,...


the shop that told you they ripped it out only ripped you off unless they removed some aftermarket alarm system i,m a gm mechanic and if you remove the factory anti-theft on a 2003 olds alero it will not run ever again until re-installed make sure your battery is charged good turn igntion switch to run position but do not try to start security light should be flashing let car sit with switch on and light flashing for ten minutes light should stop flashing now start your car this is how to reset anti-theft was that worth $400.00 and again why let a bussiness named brakemax look at a no start condition keep on and you will be BROKE to the max HOPE THIS HELPS AND STAY AWAY FROM THEM YOUR FRIEND @ HELPMAX

Aug 30, 2010 | 2003 Oldsmobile Alero

1 Answer

I have a 99 alero. The computer by passenger floor was changed. The computer that replaced it has the same part number as the old one. I turned the key on for 10 minutes and waited to reset the security...


MOST THE LATE MODEL CARS OBD 2 PCM CONTROL FROM 1996 - 2011 WHEN EVER YOU REPLACE THE PCM BEST FOR DEALERSHIP TO FIX BECAUSE THE PCM - CRANKSHAFT SENSOR - ANTI THEFT SYSTEM HAS TO BE REPROGRAMMED.

May 15, 2010 | 1999 Oldsmobile Alero

1 Answer

99 alero turns over fine fires and runs for 5


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

5 Answers

Security light in 99 Oldsmobile Alero


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.

Sep 14, 2008 | 1999 Oldsmobile Alero

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