BCM wire harness 2000 GMC Denali

[Skweez]

Does anyone know where I can find a wire harness for my BCM. I need the whole wire setup from BCM to the blocks, to the amp and cd changer, and the rear seat stereo controls and heated sets. Ive looked everywhere for this harness. GMC says that they are discontinued they won't be able to get one for me. Please I'm pretty sure the mars he last thing I need to get me truck running.