You're probably right

Ain't technology wonderfull !!!!


Mark

Most likely it is a ECM function and there is not anything physical
that you can do to prevent it. It is a bus message from "whatever" and
the ECM is being told that it is in "theft mode".

I suspect the key chip has lost it's code, so until you get that fixed
it will continue to do this. It will require going to the dealer and
forking over a pile of money for a 30 second job to reflash your
key(s).

Had a newer Grand Prix do the same thing.

JW