GM Passlock?

(ZZ ) scribbled:

Passlock II - you mean the special key with a black rectangle (close to the handle) and a strip of metal in it, on both sides of the key?

That is mated to the ignition to let it know that that key is the correct one. Often times, if hte key gets off debris, it will cause the security light to flash.

Try this: clean that strip of metal (in the black rectangle) using a QTIP with ISO alchohol and let it dry.

Nope, my key isn't like that. I think that's the Passlock I (or maybe I have Passlock III..). The resistor is in the switch, not the key (or so I understand it). And the light doesn't flash..it comes on steady.

When the ignition is turned on, the Security light comes on, as do all the others. If it doesn't like the key (so I understand), it shuts the engine down after 3 seconds, the light will be blinking, and you can't re-staart for 10 mins. In my case, when the engine starts, the light goes out for 2 or 3 secs and then comes back on and stays on solid. If I drive somewhere and then come back to the van like 30 or 45 mins later, the light will often (but not always) stay off after it starts. It suddenly started doing this about six weeks ago.

Something must be triggering it to come on after the engine starts but I don't know what, and can't find any info on the system, hence my posting here.

Is there a module that controls it, or is it controlled by the computer?

I suppose I could take it to the dealer (as the owner's manual says to do) and then bend over grab my ankles but that's the last resort.

If could find some info on how it works, I'd really appreciate it...

Before I leaned forward, I'd be removing enough glass/dash to reach that bulb with a pair of looooong needle-nosed pliers-----and render it inoperative. No need to go so far as to remove it; just break that sucker. s