I thought it was just a pickup too until I started building one and started to see the differences.
The ribbed roof on a CC goes all the way to the front, so it effects the need for rain gutters. On a Suburban they start behind the cab area so you still need rain gutters.
I just feel that since there is a suburban and a blazer/jimmy forum due to their body styles that the CC should have a place where you can talk about CC specific things.
Like rockers/ rear seat, headliner, frame mounts had to custom cut mine for the CC),
Just some thoughts.