Yes, I would very much like to get the 3rd gen CTS Service manual. It appears that these manuals run about $500+ which is insane for a private owner, as is the annual subscriptions. I paid $150 for a 3 volume GM manual for my 2001 STS back in 2005 - no problem with that at all.
Any advice or links would be greatly appreciated.
Be advised the downloadable service manuals (either via here or eBay) are some sort of cobbled together manual, not the "official" GM manual.
It seems to be quite brief and generic at times, but it does have a set of schematics and goes into certain details, just not enough for a "novice" to get things done properly in a lot of cases. For seasoned mechanics it is probably adequate.