Stereo & Electronics - Body Control Module???

So the dealer is telling me that the output to the door locks from the BCM is shot and I need a new one, which is running about $350 from them!!! I checked ebay and there's a couple on there, I just wanted to know if they are interchangeable between the various years or not as well as options such as traction control or keyless? Anybody know these part numbers as well?

I have a '98 w/o traction control and w/keyless.