The theft system light comes on in my 99 chevy malibu how do i fix it

Here are two methods to reset the anti-theft system on 2007 Chevy Malibu:
1st method
1. Put the ignition in on position, let it breathe for 10 minutes, and remove it when the anti-theft system light stops blinking.
2. Crank up the engine; it should now start
2nd method
• While outside the car, press and hold the lock and unlock button together
• Let go when the car honks and the lights flash
• Put the key in the ignition and rotate to the ON position, and leave there for 30 seconds
• Switch on the car, and the anti-theft system would have reset

There is a box under neath the steering wheel that allow for the theft system of a 2002 Chevy Malibu to be disconnected. ------------------------------------------------------------------------------------------
CARPROG FULL

I have had the same problem. This has happened to me three times in the past nine months or so. Per the owner's manual, you turn the key to the on position and wait about ten minutes. This resets the system and when the "Theft System" light goes out, it starts right up. I did this each time and it started right up.

You need to reset the theft system. To do this, try to start it. It should start and die. Then after it dies and the theft light is flashing, leave the key on for 10 minutes. After 10 min, the theft light should go out. After the theft light goes out, turn off the key. Count to 5, then restart it. Then it should work.

all gm vehicles from 97-2005 have a theft system called the passlock system. (how to deactivate system on chevy malibu) turn key on engine off, let it stay on for at least 10 minutes, then turn ignition off, take out key from ignition switch. after 1 minute start the car. you can also go to tubesound.com to disable system for good. --tubesound.com/passlocksystem. ( just type in the problem when page comes up ). have a good day!! vehicle will not start with system blinking. it thinks its being stolen.

Only if theft light is flashing, then it would need to be reset, to reset turn key to on and wait till theft light stops flashing about 10mim or so, then turn key to off and back to start engine.

you can easily bypass the security system entirely. There is a great write-up here http://newrockies.ca . That was the only solution that saved my Park Avenue.

if the theft light comes on and wont let you start the car put the key in the on position untill the light goes off then start the car

yr gonna have to get the passlock key and punch it into the radio so u can solve ur problem most chevy dealships can assist you with that.

No, I think he has the same problem I do. I have a stock 99 malibu...no real theft system. Usually after it rains or gets cold, a "theft system" light comes on in my dash. I can be driving, and the light will come on. If I turn the car off, I cannot restart the vehicle till about 20 minutes have passed and the light finally goes off. Sometimes this light comes on when I try to start the car in the morning. I put the key in the ignition, and the car will not start for 20 minutes till the darn theft system light goes off. From what I gathered, the theft system issue has something to do with a "passlock II" defect. I have no idea what this is, all I know is that I can't get a mechanic to listen to me, because the issue never repeats itself when I go to a garage. It gets a little annoying, but I've learned to deal with it.