My 2001 chevy lumina will not start. it has the passkeysystem. You put the key in the ingition and car will not even turn over and the security light is blinking. Just changed the battery, starter and alternator several months ago Help

Check fuses
I found fuse box diagram which one of the fuses is for Theft-Deterrent Module, Radio. I would go through and check fuses
Chevrolet Lumina (1997) - fuse box diagram - Auto Genius
Some info no theft-deterrent below
1997 Chevy Lumina Car Will Not Start. "security" (2carpros.com)
Security System Preventing Car From Running: Car Will Not Start, ... (2carpros.com)

The security light is a visual indication that something in the car's antitheft system is failing. In most
GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you
put your key in the ignition, there begins a constant line of communication between your key's security
chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module).
These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending
signals to each other. The security light illuminates when that signal gets broken, even just for a second.
When the signal breaks, the car misinterperates this as an attempt at theft and goes into antitheft mode.
The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key.
This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

to reset security you'll ned to do the 10min key with ign. on for 3times after each 10 min turn key off briefly then back on without trying to restart after 30min or three 10min ign on cycles turn off key briefly then the car should start

security light off, have someone hold the key to start and tap on the starter and see if it spins
if it does you need to replace the starter.

There is no starter relay. But there is a part of the antitheft system that will turn off the starter. When your key is forward, do you see a light on the dash that says SECURITY? If so, this is 100% the problem. Check out this link for info and answers that can do yourself.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

sound like pass key security system has failed
dealers the best bet

You have a chip on your key,Your ignition has wire that goes bad,You have to get a new ignition and key that has a new chip.

check your inteior light switch. for a tempory fix remove the bulb

does it have a coded key?

you probably have a broken wire in the ignition that reads the resistance in the chip in the key. there are two wires that attach the ignition switch to the security system.I had the same problem and it can be easily fixed by putting a resister in place of the chip in the key.any garage that puts alarm systems in cars will be able to do this very easily and very economically.