I have a 02 WS6 and was wondering how exactally do you reset the pcm?? Is it pulling a fuse?? or disconnecting the battery?? If it is pulling a fuse which fuse do I pull??

 

Here's how I always do it:
1. put key in Run position
2. Pull PCM Bat and PCM Ign fuses under hood
3. Wait a minute
4. Cycle key off run off run (I don't think it's necessary but I got in a habit of doing it)
5. Replace PCM Ign
6. Replace PCM Bat
PCM should have all learned parameters reset

Or you can disconnect the battery and wait a while

 

Turn key on, don't start car
Pull PCM BATT & PCM IGN fuses in engine compartment
Wait 5-10 min
Turn ignition off
Replace fuses

You can also disconnect the battery, but this way you won't have to worry about the radio LOC.