My Security Light is on

FAW484

MEMBER
2003 CHEVROLET IMPALA
82,000 MILES

About three years ago I had a problem with my Impala's security light coming on.I had the ignition lock and cylinder replaced and it solved the problem. But now after three years the light starting coming on again.. I check the battery by a professional and they said it was weak so I got a new one. But the light is still coming on. I checked for trouble codes with my hand held scan tool and there are NO troubles codes present. Can you tell me what may be causing this again? If I install another key and switch can I do the relearn process with turning the key on and off as per Mitchell Repair manual. Are will it have to be done by someone with a Tech 2 scanner.

Wednesday, March 7th, 2012 AT 8:09 PM

5 Replies

HMAC300

MECHANIC
48,601 POSTS

Try resetting your security system. Turn teh key on and leave on until the light goes out, up to ten minutes. When/if it does then turn the key off and then start the car. If that doesn't fix it then there is another problem and a tech 2 scanner will need to be hooked up to it. Normally only found at dealers.

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Wednesday, March 7th, 2012 AT 8:24 PM

FAW484

MEMBER
6 POSTS

But if I descide to replace the key switch. Can I use the relarn process from Mitchelle

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Wednesday, March 7th, 2012 AT 8:29 PM

HMAC300

MECHANIC
48,601 POSTS

Yes but try to relearn it first as that may be all that is wrong with it.

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Wednesday, March 7th, 2012 AT 9:43 PM

FAW484

MEMBER
6 POSTS

I tried the relearn process like you said and all it did was alternate between the battery light and the security light and I did it for almost 20 minutes and the security light never did go away. Did I not do something right? Thank You for your time

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Wednesday, March 7th, 2012 AT 10:08 PM

HMAC300