I started a thread here about my DUAL Climate Controls: https://www.gmforum.com/t286072/ The post includes a photo of my controls.

My Owners Manual only has the info for SINGLE Climate Controls. A couple of good folks were very helpful, but my understanding is still sketchy, so I thought I'd post anew.

I've called a couple a dealers and Googled it, but no one seems to have the DUAL pages. I'm assuming my 2003 DUAL is the same for 00-05. Maybe not. The best thing for me would be a scan of those pages attached here to a reply.

But that'* work. Second best, still some work, would be for someone to break out their manual and write up an organized summary of the info. Any takers? Thanks in advance.

I just checked the 2003 owners manual we have linked in the forum. It'* shows and explains the Auto Climate Control features. Please down load and check that area out and see if that doesn't help.

Uh-oh, now I feel extremely dumb. Yes, it'* in that PDF. But it'* also in my Manual. I had just looked at the Index, turned to the page(*) and when it seemed to come to an end I didn't look at the next page!