I have a 2006 2500HD LBZ with that stupid ISS problem, (I had the same problem on my 2002 & 2004! I guess I just dont catch on too quickly.) This time, when I went in for the grease job at the dealership at 24.8K, they replaced the ISS with the "new improved" version #19153614. Sounded good at the time, but now it's doing it again and I'm off warranty. Anyone have a permanent fix for this?