What causes a 1994 Buick Park Avenue security light to come on?
One common cause for the security light to come on is the chip
in the GM ignition key. First try the spare (if you have it) if
that does not work it may be the contacts inside the ignition. I am
not sure if it can be repaired or if the ignition must be replaced.
I have heard that the problem can escalate to cutting out the
motor, so it is not something to be ignored. If your ignition key
does not have a black piece of rubber with a small piece of metal
in it, just disregard what I said. I hope that this information
will help you get to the bottom of the problem.