Security light

The security light came on last night and I need to know what this could be caused by and how much it will cost to repair

I know this is about 4 years late to help with your issue but just in case anybody else is having this issue:
My 2003 Buick Century is doing the same thing. All the lights, radio, power seats/locks/windows and all worked fine. Car wouldn't crank, just a slow click and security light is on. At first I did this http://www.youtube.com/watch?v=UWfvEouMMtcand it fixed the problem but a few months later the problem came back and this time just jiggling the wires didn't help. Was told it would be $1100.00 to replace the VATS security system in the car.

Computer problem
2001 Buick Century 6 cyl Two Wheel Drive Automatic

We are not getting any response when we turn the key. It doesnt turn motor over. We were advised it required a New Body Control Module. We had it installed and still nothing/The security light is on and doesnt not go off

Make: Buick
Model: Century
Year: 1998
Miliage: 183 000 kms
Engine size: 3.1L

My car has a couple of problems, first off my ABS light is always on. I don't know if it is supposed to be like that, maybe its telling you they are working I'm not sure I never had the owners manual. The "security" warning comes on periodically which I have no idea what that means but if you turn the car off and on again in usually goes away. The parking brake notification light (possibly used for something else as well I don't know) will come on once in a while, the car makes a "gurgling" noise in the engine compartment right before it happens but this light also only comes on periodically and will go away when the car is shut off then started again. And finally, there is a vibration that sounds like it is coming from the right front. You cant really feel it when you are driving, its just noise that gets worse the faster you go. It also gets worse the more you turn the steering wheel to the right but pretty much completely disappears when the steering wheel is turned to the left.
All and any help is greatly appreciated.

If it was the door ajar switch, that would mean that when you open the door, the interior lights and the "Door Ajar" dash light AND "chime" would not go off.

This is not the case. Every door, when opened (even individually), signals the "Door Ajar" light and chime the way it's supposed to.

I had noticed that once before I seen that on the side that the seatbelt does work on, when you push the button on the door jamb to turn off the interior lights, it does not recall the seatbelt.

I really have no clue in to how the seatbelt knows when to retract itself?

Yep. The door ajar light, along with the interior lights, comes on with the front passenger door ONLY open.

Ok, so i've removed the glove box, and only to come to find out I have no idea what this "Restraint Module" looks like? And where exactly it is located? (Up/down/left/right and behind the glove box?)

im not even sure what it does?

Hello: I noticed on Saturday that my security light was on and now stays on. THe car starts fine and it runs good. Will that security light cause me any trouble?

Ok, just to make sure about this so I dont do anything that I will soon regret.

I found a black box behind and mounted above my glove box, and what looked to be, I think, 2 connectors with, what I think is, about 8 wires on each connector. One connector is grey, and the other is black.

I just want to make sure that this is infact the restraint module? And that I disconnect and reconnect both or either or the connectors?

As I had noticed that when I found it, I was looking back in there and poking around just a bit with my hands, that when I started my car, the seat belt light on my dash was flashing. Normally, that light just stays on instead of flashing when my lap belt isn't fastened. And even then it goes off after a little bit.

But this light just keeps flashing no matter what. And I have noticed that when I open (any) door(s) when its running, it goes off and once the door is closed, it goes back on flashing again. So there's gotta be some kind of connection between all this right?

I got the placement screws off of it, and when I disconnected the 2 connectors, the seatbelt light quit flashing alltogether.

Also, the driver side seatbelt (which does work) didn't move when the it's door was opened/closed.

But I did disconnect and reconnect both of them and the passenger auto seatbelt still does not work.

And all the wires do infact look to be fully seated into the connecter and looks like it should be functional.

I guess this means the module is bad?
And if it is, where in the world would I find another one?

Thank you!

Alrighty, thanks a bunch!

Well, I took a ride to a junkyard and found the exact part that matches it exactly, and replaced it and hooked it up only to find out that it still doesn't work. The driver side still works but the passenger side still does not work.

That sounds like it very well could be the culprit.
When I first got the car, I pulled both of those levers, trying them out, etc. And nothing happened with either of the seatbelts.

And I really need to clean down there anyway, seeing how theres a bunch of coins and old food, and who knows what else!