Can someone help while driving my security light came on. what does this mean? also i do not have a alarm on this car

That may be your VATs acting up. Take a look at this write up. Try cleaning the chip on the key.

https://www.gmforum.com/t279119/

You may need a new key,after time the "chip" tends to wear down and not make the connection.Had to do this myself a couple years ago.

I agree... considering having to do this myself, I have 2 sets, both originals for my 94, the "spare" is only a spare because it works but when used the security light stays on, now my "main" set is starting to come on intermittently... it could be as simple as wear on the key isnt making a solid connection so its messing with the ecm

Last week my main actually set off my security unit and it locked the car down for 3 mins, was a pain because i was busy at the time and didnt need to have to wait but it came back up after 3 mins and hasnt done it yet but i fear it will only get worse... take the advantage while it still works and find a resolution, something like this is gonna be a start with the simple and cheap options and work up or take to a dealership and let them do the same lol

simple 2 cents
good luck

Thinking out loud here...

Doesn't it state in the FSM that if the resistor in the key is bad the car shouldn't start? That'* always been my understanding... does the system run more than one check on the key beyond one initial to start the car? I thought the key was a one and done check.

There are sensors on the trunk and hood that can trigger the light as well as a module that can give off a bad light.

Unfortunately that module is deep under the dash.

Who has a moment to look this up in the FSM and give the OP the basics of the testing to figure out what is causing the light?

I had a similar issue the other night. I went to start my car, and the security light came on instead. It sounded like a bad start, like I didn't have the key turned for long enough. However, instantly (and not three minutes later), I turned the key again and it started right up, but with the security light on.

Next time I started the car, the light went off and all is well. My key looks fine. I'd rather keep VATS enabled, so does anyone have a list of things to check?