Question about 2004 Oldsmobile Alero

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Car cranks but wont start

Changed ignition on 2004 oldsmobile alero how do you re-code anti-theft system car cranks but wont start

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Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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I have a 2004 Alero Oldsmobile if I buy the chipped ignition does it reprogram itself for the anti-theft device


Chipped ignition ? Key's on your car do not have transponder chip . Replacing Keys
The ignition lock cylinder and keys do not contain any coded electronic components. The lock cylinder housing contains the coded electronic components. Changing an ignition lock cylinder or replacing a key is a purely mechanical process which does not affect the vehicle theft deterrent system. To replace an existing key, simply cut a new key to match the existing one. If no keys are available, the lock cylinder must be changed. To change the lock cylinder, simply replace the existing lock cylinder with one of the same type.

Jan 13, 2017 | 2004 Oldsmobile Alero

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 have a 2002 Olds Alero. Batt is good I have dash lights key works in acc position but will not crank the car. Had starter tested and replaced the ignition and all fuses are good. Any ideas this one has...


Starter switch is faulty. (not to be confused with the key switch), or The passlock sensor in the igniton lock cylinger may fail causing an anti-theft system fault and a no start condition

Dec 13, 2014 | 2002 Oldsmobile Alero

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04 alero cranks but nostart


I have a 03 olds alero in my shop,and no codes. I changed the crank position sensor and that helped for some time. I am looking a the cam position sensor and the ignition control moduler

Oct 30, 2012 | 2004 Oldsmobile Alero

1 Answer

Had my ignition lock cylinder replaced. Still having problems starting my car. Should they have given me a new key with this new cylinder?


These cars have an anti theft feature. When parts dont match up or begin to fail, the SECURITY system disables the starter. Read this link, it tells about the problem with GM car anti theft,

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jul 12, 2011 | 2004 Oldsmobile Alero

2 Answers

99 Alero Passlock and starting problem


YOU CANT BYPASS PASS KEY ANTI THEFT SECURITY SYSTEM.ITS PART OF THE PCM.IT WAS MADE WITH CAR.THATS WHY YOUR CAR NOT CRANKING.THE SECURITY THEFT SYSTEM SHUT DOWN FUEL SYSTEM.THE DEALERSHIP HAS TO FIX. IF YOUR IGNITION SWITCH KEY CYLINDER LOCK OR KEYS ALSO THE BCM FAULTY.THE DEALERSHIP HAS TO REPLACE FIX THEM AND REPROGRAM TO PCM IN ORDER FOR CAR TO CRANK.

Jun 26, 2010 | 1999 Oldsmobile Alero

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My car wont start its a oldsmobile alero 1999


if car wont start.make sure your battery volts are 12.5.if not charge battery.or replace it if dont hold a charge.if battery is good engine wont turn over.make sure battery cables is clean and tight if all good no start .have starter and starter solenoid check.if battery and starter is good.check for fuel .has some one turn ignition to the on position.go to rear of car listen for fuel pump noise.if your hear fuel pump check ignition system for spark.go to auto parts place buy a spark tester.if you get no spark .check .ignition fuses and ignition module.if you hear no fuel pump.replace relay or fuse.if if fuse and relay good replace fuel pump.if every thing good .your car could have crank sensor problem. or your car is in theft deterrant mode.if so have your car towed in and scanned.

Jun 30, 2009 | 1999 Oldsmobile Alero

1 Answer

We need to reset the computer on a 2003 Oldsmobile Alero


HI there if the scan tool you are using will not reprogram the theft module the try the 10 min relearn

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON (vehicle will not start).
  3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
  4. Turn OFF the ignition, and wait 5 seconds.
  5. The vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK. Important: The vehicle learns the Passlock™ Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
  6. Start the engine. The vehicle has now learned the Passlock™ Sensor Data Code and/or password.
  7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles

Apr 10, 2009 | 2003 Oldsmobile Alero

1 Answer

Our oldsmobile alero wont start seems like not getting fuel


If the security light is flashing when the key is on then it is the passport 2 anti-theft system. You need to turn the key to the on position (one away from cranking it over) and leave it until the light goes out. Then turn the key off, remove it, then try to restart it.

Dec 26, 2008 | 2004 Oldsmobile Alero

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