I found some overlaps on my 5-6 and 6-5 that made a big difference. Helped get it to stay locked too. I also had to back my WOT shift points down so...
I dont even know where to start with this thing. Attached the tune for reference. Id acquired a bastard 07 GMT900 RCSB V6 Silverado without the FPCM....
Up thru 2007 they all kept the same wording about loss of CMP behavior, 2008 it's strangely not mentioned one way or the other, then 2009 it changes...