This is a very common problem on GM vehicles. The security system is known to fail. Basically when you insert your key, the system checks for certain signal. If the system cannot get the correct signal from the key, it assumes the key is incorrect and goes into SECURITY lockout mode. (prevents hotwiring) This has been happening with GM's for a very long time. There are ways to bypass this now. Read through this page for info, solutions as well.
http://www.diy-gm-security.com/
SOURCE: 2002 Saturn SL reverse lights inop
the neutral safety switch on the transmission may be bad.
SOURCE: security system stuck on no start 2002 dodge durango
You need to buy a remote key fob and have it programed.The factory security system can't be easly disabled.
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engine side 1234/coil side 4123,all left to right.
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: how to disable passlock system on 2000 Chevrolet
There isnt any way to disable it that I know of, if you could, anybody could steal the car. It just needs to be fixed by a qualified repair shop or the dealer.
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