My truck finally went into high idle. I took the truck in on Friday because it had not worked since I bought it late last year, and it was a stipulation of me buying it that they activate this. So I got home, fired it up, and waited. Sure enough after about 30 seconds it started creeping up. It wasn't cold enough to do the 3 cyl cutout. I know this might be trivial to some of you guys, but I'm just happy it's finally working! 
