Question about 2001 Oldsmobile Alero

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Alero will not crank and will not start it has a brand new battery and great connections. The starter is fine but not for sure. The security light is on dont know if its a SNN problem or ignition switch need help????

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  • Cody Summers Aug 09, 2013

    i meant NSS (Neutral Safety Switch)



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  • 37 Answers

Is the key a FOB style ? Or have a security chip in it ? Did this happen after you replaced the battery. Some cars need to have a lot of electrical components reset if power is interrupted ( battery removal ) .

Posted on Aug 09, 2013


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Posted on Jan 02, 2017



  • 253 Answers

SOURCE: car wont start has power has fuel and starter

The security system is activated. It kills the injector pulse ( signal) and on some modles the starter. You will need to try to relearn the system. First try to start the car, leave the key in the run position for 10 minutes. Cycle the key off, then cycle it to the run position again for 10 more minutes. Cycle it off again, then back to run for another 10 min. after the last cycle turn it off then try to start the car. It is a 30 minute relearn. If this does not work you will need a repair shop to replace the passlock sensor. Good Luck

Posted on Jul 08, 2009

Testimonial: "it was in the ignition and the security activated i had to replace the whole igintion key and all "


Michael Thorpe

  • 2702 Answers

SOURCE: My 2000 Oldsmobile Alero does not start. It cranks

check for a good spark first, if there is none look at ignition circuits its more likley this part,
it could also be the car alarm the immobiliser shutting of the ignition ""stops it getting nicked?"
try resetting the alarm if you take off pipe to carb and there is fule pumping out!!! fule filter is "ok" for starting up on!!! take care working with fule!

Posted on Oct 30, 2009

William Charnigo

  • 615 Answers

SOURCE: 2004 Alero... Cranks but won't start, have to

Yes. pass-lock has roughly a 10 minute timer.

Posted on Dec 02, 2009

Testimonial: "Thank you! I didn't want to pay an arm and a leg for something non-related like a lot of other people have for the same problem."


  • 51 Answers

SOURCE: 2000 alero won't start. turns over and fires but wont start

make sure your cap and rotor timing is correct double check spark plug routes (mistakes happen). maybe your timing is off in general.

Posted on Jan 16, 2010


  • 1 Answer

SOURCE: my 2001 oldsmobile alero will not start, I put gas

you have to leave it in the on position until the light stops flashing and then turn the car all the way to the off position then start it it works everytime for me make sure your radio and everything if off so it wont drain your battery

Posted on Apr 26, 2010

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Try squirting starter fluid or ether into the carb. If it takes over you might have a blocked fuel filter. Then see if you have spark. Just pull the wire and connect to an old plug or get a tester. Make sure your hands are insulated. If you have spark then check timing. Could be the coil if there's no spark. Also could be a Passlock Sensor.

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My 01 alero wont start when i turn the key over it doesnt even try to start. The security light is not flashing but it does stay on while trying to start it.

If you turn the key and you don't get a crank, it could be your starter or battery. Check all your fuses first. Make sure the battery terminals are cleaned and have a good connection. Check all wiring and make sure there is no damage. Let me know and we will take it from there. I am here to help in any way I can.

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im just gonna take a stab in the dark here i understand that your security light is on try unlocking your door with your key sometimes you just need to reset the security. otherwise ive seen a security module go bad that may be preventing you from starting it.

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I have this problem all too often myself. Pop the hood, check to make sure the wires have not come undone. If they are on there securely, try and jump the battery if you have that option. Once jumped, it will give the battery more juice and you should be good to go. Please rate FixYa!

Jan 11, 2009 | 2004 Oldsmobile Alero

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