SOURCE: 02 saturn l200 starts then dies immediately
try your spare key it sounds like the transponder in the key is going bad
SOURCE: 2002 Saturn SL will not start if security light
the tumblers in ignition switch are getting worn. only way to fix that is a new ignition switch. their not cheep.
SOURCE: Security light blinking and car won't start
you've run afoul of the "passlock" anti-theft, or "passive anti-lock system" (aka PATS). I'm pretty sure you're in for some attention from a GM dealer who appear to be the only ones with the hardware to "flash" the brain-box (PCM). Here's a sequence that I've seen noised around on some of these forums: Turn your ignition to "on" (don't try to start) and leave it for 10 minutes, Take the key out for ten minutes. The system has thus "learned" the new key metallurgy, and you can go ahead and start the car. It didn't work in my case but it's worth a shot. Also if you have a code scanner see if you have any trouble codes. Stay in touch with us on this as I'm still going around the pole on mine, ... cheers
SOURCE: security light
Bypass the system completely. These antitheft systems are known for failing andcosting tons of money to fix. Go to this link for info and DO IT YOURSELF solutions.
http://vatspasslockpasskeysecurityhelp.yolasite.com/
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