I'm not too familiar with 03s but, It sounds like either part of the Body Control Module (BCM) or the Forward Control Module (FCM) has gone on strike and it's effecting the data bus. Again, not familiar with the fuse arrangement but, look for a fuse labeled IOD or Memory probably in the Power Distribution Center (PDC - fuse box)) next to the battery. I want to say the PDC is called something else now. Not sure. Pull it out for 30 seconds and reinstall. This will reset the BCM and maybe the FCM. Disconnecting the battery will do the same thing. You could inspect the wiring and connections at the BCM on the fuse panel under the dash and the FCM attached to the PDC (i think). Wiggle the wire harness and see if anything comes to life.
BCMs will cost $400+ at the dealership. Expect $600+ with labor. They can be had for less on the internet. I believe the FCM is a bit cheaper. Sounds like you're not using the dealership. Good move unless you are blessed with a dealership that has a good reputation. Try to find a shop that specialises in electronics. Better chance of having a mechanic who knows how to troubleshoot complex systems.
Last edited by RIP; 01-17-2008 at 06:37 PM.
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