Robert Hancock wrote:
> Newer Saturns and many other GM cars use a PASSlock security system. The
> ignition cylinder is designed to send a coded resistance signal to the BCM
> only if it is turned with a valid key. When the BCM receives the proper
> resistance signal at the correct time, it sends a password to the PCM which
> enables fuel delivery. If the BCM does not send the password, or sends
> another message indicating tampering, the PCM disables all fuel delivery -
> therefore the engine will not start or will start but stall immediately.

Sorry, what is "BCM"?

Are you referring to the keys with the built-in chip which is read by a
sensor in the key cylinder? I've seen those - the keys which have them
are obvious, but my 98 certainly doesn't have one.

-rj
98SL2