Question about 1999 Oldsmobile Alero

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Alero security light. - 1999 Oldsmobile Alero

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If security light is flashing turn ignition switch to run position but do not try to start light will be flashing let vehicle sit for about ten or fifteen mins. light will stop flashing when it does start car you have just reset security system

Posted on Aug 25, 2010

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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/

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Apr 04, 2015 | 2000 Oldsmobile Alero

2 Answers

Security system operations on 2001 olds alero


Turn the key to acc and wait about 10 minuter for the security light to go solid or stop blinking

Jun 14, 2014 | 2001 Oldsmobile Alero

1 Answer

I have an 01 alero that won't start. The security


the previous owner had the same problem with my alero, he had to go get a new security button put in or something like that

Aug 01, 2012 | 2001 Oldsmobile Alero

1 Answer

I just replaced the ignition switch and lock in my 2000 alero and now it starts and runs fine but the security light is on and stays on. How do I reset this security light?


TURN THE IGNITION SWITCH TO THE ON POSITION FOR 10 MINUTES WITH ENGINE OFF.UNTIL SECURITY TURNS ITSELF OFF.THEN TURN OFF IGNITION SWITCH WAIT 5 SECONDS.THEN START THE ENGINE.IF SECURITY STILL ON DEALERSHIP HAS TO FIX.

Jan 18, 2011 | 1999 Oldsmobile Alero

1 Answer

2004 Alero. Car turns over, but won't start. Security light blinks.


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....

Nov 07, 2010 | 2004 Oldsmobile Alero

1 Answer

Hello, i have a 2004 alero. I attemted to turn on my car today and it would not start. However, the battery is still working, all the lights and windows work. Any idea on what the problem could be?


i just bought a 2004 alero...a guy who owns a 2002 told my ..if the security light flashes...turn car off..then turn key ahead till the security light goes solid....should start

Oct 05, 2010 | 2004 Oldsmobile Alero

3 Answers

Oldsmoble Alero ignition security problem


It doesn't have to be the security. a dead battery won't let the car crank either. With a security problem the car will crank but not start. The security can be reset if the battery is charged and up. Turn the key on ( do'nt crank ) the security light will stay on if it needs to be reset. If it remains on leave the key on for 15 minutes around then it will go out. turn the key off and then turn it right back on, the security light will be on again. Leave the key on till the light goes out again, then turn it off then turn it back on , wait again when it goes out turnthe key off then right back on then crank the engine and it should start. With a scanner the code will be security neweds to be reset. Thia is all anyone can do to reset the security and it's what you were charged $450 for. Following directions.

May 18, 2010 | 2001 Oldsmobile Alero

1 Answer

My 2001 alero dont start. the security light came on. I will like to know if the security light is what is not letting the car start


if your security light flashing it will not start. you let it flash for 10 to 15 min then it should stop. turn the key off then try to start the car. if it does start you need a ignition lock cylinder

Jan 24, 2010 | 2001 Oldsmobile Alero

3 Answers

2000 ALERO SECURITY LIGHT


When the vehicles security light is flashing and the car won't start..put the key in the ON position and wait until the security light stops flashing and then turn OFF and then start. this is from a security glitch and it shuts down the gas so car won't start. Good luck!!

Nov 05, 2008 | 2003 Oldsmobile Alero

1 Answer

01 alero


THESE MIGHT HELP OUT,
TURN KEY ON AND TURN OFF ALL ACCESSORIES,RADIO,A/C,ETC,LOWER DRIVER SIDE WINDOW, MAKE SURE BATTERY IS FULLY CHARGED,THEN TURN KEY OFF,THEN ON,LEAVE KEY ONN FOR ABOUTH 10 MINUTES UNTIL SECURITY LIGHT IS STEADY ON,
TURN KEY OFF FOR 10 SECONDS AND START THE CAR.
MOST TIME THE KEY SECURITY AND THE MODULE NEED REPROGRAMING,
HOPE THESE HELP.

Aug 25, 2008 | 2001 Oldsmobile Alero

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