I just got rid of my 2007 Yukon after 250K glorious miles. lol. I removed my programmer of course. Are these still being used by others? If so I will post over in the sale threads. So glad I used it all of these years just for the deactivation relief alone. When driving it without, it was amazing how loud it would get when in V4 mode and was trying to use torque to keep in that mode.