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I lost the keys to my 97 sunfire so I busted out the ignition now when I crank it it runs for a few seconds and shuts back off and the anti theft light flashes how can I fix this problemail myself?

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  • Cars & Trucks Master
  • 3,351 Answers

My info shows you have passlock security system. The key is just a mechanical key, the key doesn't have a pellet or transponder. A locksmith should have been able to make you a new key and it should have worked fine. It's the tumbler that communicates with passlock, not the key.
Since you busted it, I doubt I can help. You need a new lock cylinder, probably a new passlock sensor, then you need to program it.

Posted on Apr 21, 2017

  • tasha stokes
    tasha stokes Apr 21, 2017

    if I get another tumbler and pass lock sender from the same car would I still have to program it even with every thing from together when I put in my car

  • jack layton
    jack layton Apr 21, 2017

    In my opinion, yes. You can try it if you want? I'm thinking, you will have to communicate with security system to get it to work.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: anti theft device for 97 ford expedition

I have 2007 expedition XLT and the interior light blinking all the time what the solution ?

Posted on Oct 18, 2008

harley9701ha
  • 424 Answers

SOURCE: anti theft system

The chip is in the key. Either the key has lost it's program or the transceiver is not recognising the key. Try another key if you have one.

Posted on Jan 26, 2009

slazabaza
  • 47 Answers

SOURCE: Car won't start - anti-theft light flashing

it sounds like the immobilizer is faulty. this will shut off the electrical feed to the starter motor. you will need to take it to a garage to get this fixed.

hope this helps.

Posted on Mar 18, 2009

  • 176 Answers

SOURCE: anti theft code P1629

try leaving the key on for 5 to 10 minutes
for the BCM (body control module) to relearn

Posted on Jun 30, 2009

tayjoejoe
  • 2185 Answers

SOURCE: 97 sunfire tried turning key

This 10 minute re-learn process only works if there is a small Hiccup or Glitch in the system. If that 10 minute trick did not work, it means that some part of that antitheft system is legitimately failing and would need to be fixed or bypassed. This link offers 2 different ways to bypass the system. Ive done both of these bypasses dozens of times, they both work and will not hurt the performance of your vehicle http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Sep 11, 2011

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Will not crank how ? When you turn the key to the start position does the starter engage and spin the engine ? , A crank no start condition . Or nothing happens . A no crank - no start condition . I assume by your statement ( Had ignition control module tested ) That you have a crank no start condition . in which case have you tested input from the crank sensors to the ICM and PCM . What engine does your Old's have ? 3.8 L
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Pontiac


Hi Paul,here's how to reset your system.
  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON. The 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. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the passwords on the next ignition switch transition from OFF to CRANK.
  6. Start the engine.

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Do you have the year make and model.? If it is a anti theift with a key immobilizer the vehicle will just start and idle for a few seconds then shut off and the anti theft light will remain on or be blinking. Then we know you are dealing with the anti theft. do you have another key to crank the engine if you do use a spare key and hold the key next to the immobilizer and crank the engine see if that will give if it doesnt try this method. roll the window down with window down disconnect the negative battery cable wait 5 minutes reconnect put the key in the ignition but dont crank it just yet turn it in the on spot not the crank for 2 minutes then crank it and see if that start the vehicle . If this doesnt work then you will need to call a mobile locksmith who reprograms the immobilizer

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PASSKEY LOCKOUT RESET GM CARS 1999 UP
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