DBC to DBW 03' Savana PCM

Can someone please tell me what to change in Editor to make my 03' Savana PCM control my ETC/DBW from a 04' 2500HD? I have done compare/ write differences catagory by catagory, and changed 0 to 1 in the ETC equiped field.. I noticed the platform on the Seirra's PCM is GMT800, and the Savana's is GMT 610. It also seems that though I write the differences, the ETC parts are not actually being written despite Editor looking like it did so. Is this because of the platform diff?? If so, do I just need to change it, or is there some other parameter I must change- or even a segment swap?? I am admittedly lost! Any help would be greatly appreciated!

You're gonna have to segment swap probably. Do you have a tac module hooked up? Is your pcm even capable of dbw? As far as I know the p01 should do dbw but p59 is better for it. If you don't have a tac module you may be flashing it but it can't control it.