Lights keep flashing when locked w/ keyless? '02 Impala LS

Hey all, I am having a problem where my lights (head and tail) will keeping flashing whenever I lock my '02 Impala with my keyless remote.
Normally the lights will flash once when locking, but now it just keeps doing it.:banghead:

Any ideas on what to look for?

Thanks in advance

Rob

When you push a trasmitter button, the door lock reciever sends a signal to the BCM through the data serial bus to perform the requested function. It sounds like your BCM is bad.