I have a 2004 grand prix gtp and lost both sets of keys. I brought the car to a gm dealership and purchased 2 new keys and attempted to have them programmed. The tech couldnt do it and said the bcm wasnt responding and gm said it needed to be replaced for 830 dollars. Does this sound like im being given a run around or could it be thats what it needs. Ive never really had any issue with the bcm locks lights windows etc. only thing I ever noticed was for about a week straight all of the dic messages would continuously cycle and chime non stop until the cad was shut off