I have a 2006 Silverado 1500 that has a weekend warrior engine. I did my usual drive by cable swap that I have done on many 2003-2004s. I use the express van OS with the Blue/Green computer that is capable of controlling the IAC. Everything works great, except the AC does not work with factory dash controls. I can manually turn the AC on with my Tech2 and EFILive scanner with no issues.

What am I missing to make the AC work?06_Dakota57build_NA.ctz