Question about 1998 Chevrolet Cavalier

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I have a 1998 chevy cavalier and the anti theft system is on ive tried all the turn your car on for 10 mins. and shut it off and it should work but it doesnt. it flashes 5 times then shuts off but the car cuts out 2-3 sec. after turning over. i dont believe theres a chip in the key so i think it already may be bypassed i dont know im lost of ideas

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  • Anonymous Aug 28, 2008

    1998 chevy malibu will not start because of the antitheft light comes on

  • Anonymous Sep 11, 2008

    When I first start my '98 Cavalier it dies immediately and then seems to think I'm trying to steel my own car! This has been happening more and more. I have changed keys - doesn't help. I just end up sitting there for quite a while, open the door, get off the seat and when its ready it just might start! Really getting old.

  • davesplace Nov 12, 2008

    I have a1999 cav z24 cannot start car due to security system dealership said $1,000 bucks to not worth it need another solution can you just disconnect

  • Anonymous Nov 27, 2008

    i have a 1998 to and my theft system someone try to stell me car now its start with anithing but it shut off ******* theft system

  • rodgers-will Dec 13, 2008

    I have a 1998 chevy cavalier 2.2ltr 4door. The theft light always stayed on since i bought the car, then one day while driving it just turned off. I changed the main computer, tryed to program the key changed the wireing harness nuthing seems to work, it turns on for about 3 seconds and then turns off. ANY IDEAS WHAT IT MIGHT BE.

  • Anonymous Jan 07, 2009

    1998 cavalier will start for a few seconds and then it turns off I was told it was the anti theft needs to be reset



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Turn the switch to RUN position for 10 minutes until the "theft system" message on the cluster disspears, put the switch back to OFF position wait 5 to 10 seconds and repeat this procedure another 2 times.
After the third attemp you will be able to start your engine without problems..

Good luck I had the same trouble and this info helped me to avoid waisting money

Posted on Dec 23, 2008


Turn it on for ten min. the theft light will stay on then without turning ignition off just start worked for my cavalier

Posted on Sep 11, 2008


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I have a 1998 chevy cavalier.The car starts,then stops.The anti-theft light flashes after.I changed the fuel pump,ignition switch,numerous also. Why won't it start?

Did you have the new ignition switch programmed to the old computer before you changed the computer? Parts were programmed back then, and you wouldn't believe what parts have to be programmed in cars made today! Door switches for example, need to be programmed in!

Mar 23, 2017 | 1998 Chevrolet Cavalier

1 Answer

How to reset anti theft on a 2000 Chevy Cavalier after replacing key core

its a simple system to reprogram. you should use a charger on the battery as it can take up to 30 minutes. turn the key on for 10 min until the theft light stops flashing. repeat this 2 more times and after the 3rd cycle., the programing should be complete

Apr 05, 2015 | 2000 Chevrolet Cavalier

4 Answers


Does your system have a resistor pellet in the key?

Apr 09, 2013 | 1999 Chevrolet Cavalier

2 Answers

Car will not start

You probably can't.
If the anti-theft module is in the cluster, you would need the correct key chip for the car the cluster came out of.
You might be able to bypass the passkey system by running a wire to the fuel pump relay and other components.
You may need a shop manual to find the circuits.

Aug 23, 2012 | 1997 Chevrolet Cavalier

1 Answer

My 98 cavalier starts for one second then shuts off flashs the antitheft light

to reset anti theft system--turn key on engine off, for about 10 minutes. after 10 minutes, turn key off, wait 15 seconds, then try to start car. from 97-2005 gms have a theft system called a passlock system. you can go to to disable system for good.

Sep 17, 2010 | 1998 Chevrolet Cavalier

1 Answer

1999 chevy cavalier and the anti theft has kicked in

Not true call the dealership and speak to the service department and tell them what you did and the service tech will tell you how to reset the system. Most GM tech are very helpful. good luck

Apr 23, 2017 | 1999 Chevrolet Cavalier

1 Answer

Anti theft reset how to reset?

hey, i ha d the same problem, turn the key on and let the anti theft light blink till it stops blinking about ten min. then start the car the computer has to re-learn. the pass-key anti theft shuts down the fuel pump and ignition . after i did this i have not had a problem since, i hope this helps

Dec 05, 2009 | 1998 Chevrolet Cavalier

2 Answers

98 chevy cavalier cranks but wont start changed fuel pump,computer,crank shaft position sensor and the theft system light is staying on

try to start the car, than the anti theift would shut the car off. you wait ten min with the key on, until you see the anti theift flash or disapear. than turn key to off position and try to start it. this will reprogram the computer.. Good luck.

you can also try disconnecting the battery for 30 minutes

Oct 07, 2009 | 1998 Chevrolet Cavalier

1 Answer

Problems with the anit-theft

changed intake gasket.Theft light stays on.will crank,but not start

May 06, 2009 | 1998 Chevrolet Cavalier

5 Answers

How to reset anti theft in 1999 chevrolet cavalier

make sure you have a fully charged battery turn on the ignition with out starting the vehicle let sit in on position for 10 to 15 minute then start it may take a few attempts

Mar 08, 2009 | 1999 Chevrolet Cavalier

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