I never would have thought that Chevys and Pontiacs would be on the same line like that, so I didn't even consider it to be a Chev.
It does seem odd and confusing but after seeing the assembly lines at the plant with bare metal SUV's going down the line that all look the same and seeing them further down the line where they become a GMC or Cadillac etc... is weird. Makes you wonder why would you pay more for just a name?