Question about 2000 Chevrolet Cavalier

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Starting problems re security sencor

I start having problems for the last 2 years with not be able to start this car. even when the electronics is being re programed. The car will start for several times while being still in the garage and then the same problem occure all over. You can understand that it is scarry to take the car for a ride because it may not start again. This car has 142000Km. or 87000 Miles on the engine Please give me your expert opnion how to solve this issue. Thank you Frank S

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  • Sauble Sep 20, 2008

    I do agree with your answer and yes, this could be the problem I will give yoiu a 5 start rating for your answer.

    Thanks Frank S

    I have one more question could the problem also be related that the key maybe slichtly worn, or the chip in the key be a problem, just a thought.

  • Sauble Sep 21, 2008

    Thank you again for the additional info. It was just a thought because I do own cars were the ignition key has a chip . Thank you for your help it was more then appreciated and helpful.

    • You do deserve a 5 start rating

    Frank S

  • Anonymous Oct 19, 2008

    unable to disengage anti-theft system on 2000 cavalier

  • Anonymous Mar 26, 2009

    my theft system light came on and the car wont turn over. how do i disconnect the theft system



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The Cavalier 2000 is equipaded with Anti theft Factory system. ...
The problem you have is. The ECM and BCM ( Instrument cluster). Are losse the Pasword memory, Given from the Pass lock Sensor ( Ignition lock cylinder)..
99% of this problem you will FIX Replacing the Ignition lock cylinder. and programing after Replaced.

I'm a mechanic and had ben involved on this problem a few times.

I hope this help on your problem.

Thank you for use fixya..

Posted on Sep 20, 2008

  • Juan Guillen Sep 21, 2008

    Thank you.

    It can be a problem if the key is worn. But only is the key is able to remove in RUN or ACC position.

    OK.. The KEY on your car, has NO CHIP.

    The CHIP is part of the Ignition lock Cylinder.

    The CHIP. Is on the Fix part of the cylinder.

    In the part moved with the KEY is there a Magnet that send Magnetic siganl to the chip....

    This is the basically axplication of how work the chip on your car.

    Thank you.



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