Any questions regarding 00' 4.3l, to 03' 5.3l DBW SWAP. Feel free to ask. For now. I'm looking for any help regarding swapping the 00' I/P to 03' I/P. The PCM is 03', the BCM is factory (00' sierra single cab V6). The I/P Is 03'. I plug 03' I/P into stock 00' dash with stock 00' BCM. Will installing the 03' BCM help link correct communication between PCM and I/P? This is the last peice of the puzzle.